cq surplus schematics handbook (c) 1960 by cowan publishing
TRANSCRIPT
BC-61 I WALKY-TALKY 1 COMPLETE W I T H CASE
. . . . . . . . . . . . . . . . . . . . BC-611 WALKY-TALKY CHASSIS, NEW! Excellent, new, Spare Chassis for above, prlced so low that in the event of trouble it would be cheaper to insert a new chassis. Also excellent for the Amateur or Technician who pre- f e r ~ to make his own style of Walkv-Talkv. Supplied less tubes (1-1R5. 1-15s 1-1T4 and 2-384 tubes required), and less plua-in bsc. and'^^ Ant. Coils, less crystals. Supplied with Schematic Wiring Diamaml. Shp. wt. 8 Ibs.
TG-34 CODE PRACTICE SET I.earn to ronv mde.
i s reels), available from many other surplus houses. Also usai,le for prac- ticina "sendinp" by means of internal oscillator keyed by external hand key. Operates from 9 0 to 120 V. or 1 9 0 to 240 Volls, 6 0 C v ~ l e s AC. Units are Used- Very Good eond~tion. Shpg. wt. 54 Ibs. s p E c l A L . . . . . . . . . . . . . . . . . . . . . . . . . . . . $14.75 TG-34-15 ABOVE. NEW-UNUSED. . . . . . . . . . 818,95
ELECTRIC DEFROSTER I ~ I FOR CAR OR TRUCK
BC-1306 TRANS.-RECEIVER FOR MARS, HAMS, ETC.
For MARS application. 3800 to 6 5 0 0 KC, MO or Crystal Control. Includes Crystal Cali- bratlon and Net Controls. NEW UNITS, with a l l tubes except Final RF 2E22 tube. Shpp. wt. 50 lbs. E A C H . . . . . . . . . . . $22,50 -- PE-237 POWER SUPPLY
For ALlOve BC-1:%06. Supplies all necessary voltapes and cur- rent for hoth transmitter and receivep sections. O p e r a t e s from 6. 12. or 24 Volts DC. "1.IKE-NEW" units. Shpg. wt. 125 Ibs. E A C H . . ......... $14.95
REMOTE CONTROL FOR MOBILE
Volume in speaker or Dim: 6sis" long. 5V4" Shpz. wt. 1 0 Ibs. PRI CANNON PLUG CONNE
OR MARINE USE
HI-PRECISION FM SIGNAL Generator-Mobile Band
m B O * u L OHM L,Ne ~;;~E&,mL DIAL IILM ZERO SLT
I / I / RFUMRWL
SENSATIONAL BARGAIN!! TCS TRANSMIT- TERS. RECEIVERS, AND ACCESSORIES
You've never seen TCS Transmitters and : f . , c i , . ~ r s priced so low! This communlrations ''wo~.k hvr.u" of the Navy and Coast Guard never sold in surr~lus for less than $300. per s e t (Acq. cost over 84000 0 0 Per set). It's ideal for mobile or fixed statlun use; precise, trou- ble-free, and consistent. Excellent for Manne-Band (2-3 mc) arrDlications if certain front panel controls on ~ ~ ~ F ~ ~ & ~ ~ ~ ~ ~ ~ ~ , " ; , F ~ ~ ~ ; P , T p~;e;;;;~;:~;f,F:?"p;d requi~wzments regarding- second harmonic radiation, stnee the transmitter uses a Buffer staae, plus (varia1,le) link eouplinp between the final RF Tank and a pi-network which couples t o the antenna, all of which reduces har- monic radiation t o absotute minimum. Other features of TCS Transmitters and Receivers arq: *comolete eov- erage 1 . 5 to 12.0 mc. all band-switchmg. 24-channels crystal-control, nlus one channel manual tuninp (in transmitter precision VFO). ruses 1625 instant heat- in8 filament tubes (equivalent $0 Type 8071, i? RF Amp and Mod. sections of Transmitter t o minlmlze dram. *Rated a t 40 watts CW and 20 watts phone Outout when transmitter plate voltape is 4 2 5 V.. but this power can be easilv doubled bv using 6 0 0 volts plate SUPPIY. *Transmitter or Receiver des imed to operate from either 12. 24 1 1 0 V. DC or 1 1 0 / 2 2 0 V. AC power supplies. ~ b w e r Supply ' Diagrams furnished. *Receiver is super-sensitive superhet. with excellent sensitivity & selectivitv ehsraeteristies. gnd tncludes BFO circuit for CW reception. Units priced below are complete with tubes. ~ o o d clean condition but untested. TCS-S(to 9 ) TRANSMITTER, with all tubes. schematic diagram and power supply diagrams, as outlined above. Shpp. wt. 6 0 Ibs. PRICE EACH ........................ $ 3 9 1 9 5 Tcs-9(to 14 ) TRANSMITTER. same as above but has minor modifications which make these models more ........................ desirable. EACH . $ 5 9 . 9 5 TCS-5(to 14) RECEIVER, mmplete with tubes and
TCS ANTENNA LOADING COIL. Uqed with above equipment t o Obtain maximum performance with short whip antenna. Has fi-position tapped switch for various lengths of antenna.,, I n metal housing 6" A. x 91/1 W. x fin/&" D. Shpg. wt. 6 IhS. EACH ................. $7.95
All Above Material Subject to Prior Sale. 25% Minimum Deposit with All C.O.D.'s. Min. Order -55.00. All Prices F.O.B. Our Address. - TELEMARINE - COMMUNICATIONS CO., INC.
142 WEST B'WAY, NEW YORK 13. N. Y. PHONE: COrtlondt 7-5444
30-40 M C DELUXE F M RECEIVER
TRANSMITTER COMPANION for ABOVE
BC-659 TRANS-RECEIVER CONVERT TO CITIZENS BAND
June-'59 issue of CQ Maga- zine furnishes the necessary conversion data to convert this low-nriced Trans-Receiver for satiifactory operation i n the new Class D Citizens Band. This ~ransmitter-Receiver. i n i t s unmodified form, OPPIateS over a frequency range of 27 0 to 3 8 . 9 MC. has 2
crystal-mntrolled channels direetii controililig t h e Receiver frequency and through AFC action controlling the Trans- mitter frequency. I t is rated a t 2 watts power output. Voice FM, and uses a total of 14 loktal type, low-drain filnmen- tnra tnlher. Its romnnrt dimenfiions. ll7/8" x 163,'s" x .......... 21 I/*" with^-buiit-in loudspeaker ' and Meter Indicator makes i t ideally suitable for under-dash installation. Power Supply i s separate either dry batteries or Vibrator Power Supply PE-120 which operates from 6 12 or 24 Volt9 M All ,,nits are with tuhes. and U'SED:VERY GOOD - ............... (untested) condition. Shpg wt.' 50 Ibs. . . . . BC-659. USED-GOOD as des. EACH. . $10.95
BC-683 MOBILE FM RECEIVER
Provider 1 0 push-hultoh selected channels as well ns continuous Variable tunina over the entire ranee of 27.0 to 39.0 me. Io- ciudes features such as: huill-in
PRICE, EACH. Used-Excellent C~mditicm. Not ~ E s n z D . . . . . . . . . $24.95
BC-221 FREQUENCY METER. The best instrument possible for determining frequency of transmitter or receiver, align- ment testing etc. Laboratory Precision! Range 125 K C to 20.00'0 Kc. i'dnplete with ra l ihra t ing Cwstal. tubes, matrh- ing Calibration Bcmk. Tested, Used-E~cellent. Shpg. a t . 65 lbs. ...................................... EACH$74.50
TCS-12 V DC POWER SUPPLY FOR MOBILE OR MARINE
BY
Kenneth B. Grayson, W2HDM
31960 by Cowan Publishing Corp. A11 rights reserved. This book or any parts thereof may not be reproduced in any form o r any language wi thout permission of the pub- lis her.
Library of Congress Catalog Card Number: 59- 15267
TABLE OF CONTENTS
Introduction ...... 4 APA.38 . . . . . . . . . . 5 APN-1 . . . . . . . . . . . 6 APR-1 ........... 7 APR-2 (See SPR-2) APS-13 .......... 8 ARB .............. 9 ARC-1 ......... 10 ARC-3 ........... 12 ARC.4 .......... 14 ARC- 5 (See SCR-274) ARC- 5 VHF
(See SCR- 274) ARJ (See ATK) ARK (See ATK) ATJ (See ATK) ARN.7 ........... 16 ARR- 2 .......... 15 ART.13 ......... 20 ASB-7 ......... 18 AS-81-GR ....... 22 ATK .......... 19 BC-AR-231 (See RU- 16) AC-189 ......... 23 BC- 191 ......... 24 BC.221 .......... 25 BC-312 (See BC-342) BC-314 (See BC-342) BC.342 ......... 26 BC-344 ........ 26 BC-348 ........ 27 BC-375 (See BC- 191) BC-438 ........ 28 BC-474A ....... 29 BC-603 ....... 30 BC-610 ........ 31 BC-611 (See SCR-619 BC-620 ........ 32 BC-640 ......... 34 BC-645 ......... 36 BC-6 52 (See SCR- 506)
BC- 6 530 .......... 37 BC-654 ......... 38 BC-659 (See BC- 1335) BC-683 (See BC-603) BC-684 (See BC-603) BC-728 .......... 40 BC-733 ............. 42 BC-745 ............. 41 BC-779 ............. 44 BC-794 (See BC-779)
............. BC-906 43 BC-969 ............. 46
............. BC-1000 47 BC- 1004 (See BC-779) BC- 1023 ............ 48
............. BC-1206 49 BC-1335 ............. 50 BN ............. 51 B P ............. 52 C3 (SeeF3) Subscription to CQ ... 112 CRC-7 ............. 53 CRO-208 ............. 54 .... CRT-3 Gibson Gir l 55 DAE .............. 56 F 3 .............. 57 2F- 11 (See RU- 16) GO-9 ............. 58
............... GRR-5 60 ............ Ham Shop 85
1-122 ............... 64 1-177 ................ 59 1-208 ................. 62 JT-350-A ........... 65 LM (See BC-221) MARK11 ............ 66 MD-7 (See SCR-274) MN-26 ............... 67 PRC-6 ............... 68
............... PRS-3 69 R-174 (See GRR-5)
.......... RAK- 70 RAL ......,... 71 RAO-7 ......... 72 RAS ......... 73 RAX .......... 74 RBH ........... 75 RBL ........... 76 RBM .......... 77 RBS ........... 78 RC- 56 .......... 80 RC- 57 . . a . 0 . . . 81 RDC ......... 84
........... RDR 82
........... RDZ 9 1 .......... RU-16 87
....... SCR-274 88 SCR-284 (See BC-654) SCR-288 (See BC-474) SCR- 300 (See BC- 1000) SCR- 506 (See BC-652)
........ SCR.522 92 SCR- 585 (See SCR- 6 10) SCR- 578 (See CRT-3) SCR- 593 (See BC-728) SCR-608 ........ 94
....... SCR-610 97 SCR-624 (See SCR- 522) SCR-628 (See BC-603) SPR-1 (See APR-1) .......... SPR-2 98 Subscription to CQ 112 TBS-99 ........ 99 TBW (See GO-9)
.......... TBX 100
.......... TBY 102 .......... TCK 103
.......... TCS 104
.......... TG.34 106 ..... T S - 3 4 / ~ ~ 107 ..... T S - ~ ~ ~ / U P 108 ..... VRC 8,9,10 108
......... VVX- 1 109
Introduction
We have received so many hundreds of requests for circuit diagrams of surplus equipment that we a r e prepar - ing this book in self defense. In it you will find, in addit- ion to the circuit, some info which should be helpful in getting you star ted on a conversion. Please keep in mind that CQ is always interested in the result of your efforts. Many of these Sows' Ears make wonderful Silk Purses , and should your feet t rod firmly over unfamiliar te r r i tory in the jaunt why not (once you have untangled the above metaphors) t race out a map for the following tourist. CQ Pays for Articles. With just ordinary luck you can get back many times the price of this book.
A P A -38
The APA-38 is a Panoramic adaptor which, when connected to your receiver w i l l let you observe the modulation characteristics of received signals and displays visually all signals present in the passband of the receiver IF.
The APA-38 was originally used with the APR-1 and APR-4 Receivers for identification of enemy radar signals. The adaptor may be connected to any communications receiver by tapping into the plate of the f i rs t detector (mixer); don't forget to use a blocking condenser and coaxial cable such a s R G - 5 8 / ~ .
Since the adapter input is at 30 mc, the IF of the APR-1, you will have to convert from your receiver IF to 30 mc. The APA-38 has an IF of 6.5 mc.
A sweeping oscillator is used to convert the incoming signal, and the sweep voltage is also applied to the scope for synchronization. Provision is made for use of the scope a s an oscilloscope for the examination of pulses. The APA-38 RF circuits a r e stagger tuned to provide the wide response desired.
The sweep oscillator may be reduced in frequency coverage to allow a closer examination of a particular portion of the band. This effectively expands the center portion of the band under exam ination.
The APR -1 is a Naval Air Force VHF-UHF radar search receiver covering the frequency range of 80 m c to 950 mc in two bands. The basic receiver, without plug-in tuning unit is the CPR-46 ABC. It is essentially an I F amplifier detector audio-video amplifier having a 30 m c input to the I F amplifier. The output impedance is 600 ohm audio and 100 ohm video. A 1000 cycle audio tone can be used a s a BFO if a cw signal is being received.
The 80 to 370 m c tuning unit is designated CPR-47 AAE and the 290 to 950 mc band is covered by the CPR-47 A A F tuning unit. Signals can be picked up a s high as 2850 mc using harmonics of the oscillator.
power consumption i s 6.25 amperes a t 12 volts using the internal dynamotor. Provisions have been made for an external power supply to provide 6 volts a c o r dc for the filaments and 250 volts for the plate supply.
Schematic Circuit Diagram of Type CPR-46ABC Radio Receiver Model APR-1
Equipment.
The ARC -1 is an airborne transmitter receiver covering a frequency range of 100 to 156 mc. It is crystal controlled and uses the same crystal for control of the transmitter and receiver. The IF is 9.75 mc. Power output is 8 watts. The equipment is amplitude modulated. A guard channel is also monitored during reception. The receiver is a conventional superhet, using a crystal multiplication of 18 to obtain the mixing frequency for the proper IF output. On transmit t h e heterodyne oscillator is mixed witb a 9.72 mc signal to obtain the same output frequency.
The equipment is capable of operation on ten channels, each channel being selected with a pre-determined setting of the auto-tune dials. The equipment is designed for remote operation in a plane and requires 28 volts a t 7 amperes during reception, and ten amperes on transmit. For short durations during transmission, when switching channels, a s much a s 15 amperes may be required.
The input is 50 ohms coaxial to a whip antenna, and the output i s normally to a headset. A .carbon microphone is normally employed with the equipment. Crystals used in the ARC -1 are in the range of 5000 to 8120 mc. The oscillator is below the signal.
Tne ARC -3 is bas~cally an airborne radio transmitter-receiver equipment which, witn accessories, provides a i r to a i r and a i r to ground communications. I t nas also been used in some shipboard installations. I t operates in t h e VHF region over the frequency range 100 to 156 mc on eight pre-set frequencies, each of wnich is crystal controlled. The ARC-3 is tone o r voice modulated (AM). It operates from a nominal 28 volts dc a t a current of 5.5 amperes on receive and 12 amperes on transmit. The power output is approximately 8 watts.
The transmitter uses nine tubes and is crystal controlled a t a frequency 1/18th of the output. The modulator Is capable of operation a s an interphone amplifier when desired. This is accomplished by a positioning switch (S-103) located at the bottom of the transmitter and accessible from without. A barometric (aneroid) gain control reduces the audio by 6 db at 15,000 feet and 12 db a t 25,000 feet. Also in the modulator i s a sidetone amplifier which can provide 0. 8 watts of audio. The transmitter voltage requirements a r e 2.45 amperes a t 28 volts and 325 ma at 410 volts for full power output.
The receiver is known as the R - ? ~ / A R c - ~ and is a superheterodyne, crystal controlled with an intermediate frequency of 12 megacycles. The oscillator is on the low side and the crystal used is multiplied from eleven to eighteen times, depending upon the desired receiver frequency. A noise limiter, c a r r i e r operated squelch, and AVC are provided to produce a fine piece of equipment. In addition, a flat response between 90 and 150 cycles is provided to allow the use of received navigational signals. T h e receiver power requirements a r e 28 volts at 3.5 amperes and 210 volts a t 125 ma.
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220 mc conversion (the only practical band to use this unit on). For this conversion the RF coils can be squeezed a bit and an external oscillator fed into J-106. This oscillator may tune either 221-225 mc o r 219 to 224 mc.
The earl ier model of this equipment, the ARR-1, was quite similar circuitwise, but used acorn tubes.
The ARN-7 is an aircraft receiver used primarily for radio direction finding by aircraft. It is a superheterodyne receiver and covers the frequency range of 100 to 1750 kc in four bands. It normally operates from a power supply of 115 volts 400 cycles and a 28 volt supply for the operation of certain relays. When a supply of 12 volts is the only d. c. available the RA -59-A is employed for relay control in addition to the 115 volt 400 cycles.
The receiver required a control box C - ~ / A R N - 7 for tuning and operation. Several loop antennas a r e available such a s the LP-21 and the LP-31. A sense antenna is required for proper operation of the direction finder as well. The output is to headsets as well as to indicators when the loop antenna is used. It is not ne.cessary to make use of the loop antenna if direction finding characteristics are not required. The indicators used a r e the I-81-A and I-81-N panel type and the I-82-A and I D - ~ ~ / A R N navigators type compass indicator. The indicators indicate the true null bearing of the direction finding loop. The nulling of the loop antenna is either manual, o r automatic. When automatic direction finding is employed the loop antenna wi l l automatically locate the station to which the receiver is tuned.
ALIGNING FREQUENCIES
BAND ALIGN FREQ. L<OOP ANT 1st RF 2nd RF Osc R F
The IF frequencies are 243.5 k c and 142.5 k c depending upon the band J setting.
ART-13
The AN/ART-13 is an airborne transmitter for use in patrol aircraft. It covers the frequency range of 2000 to 18,100 kc . Some versions have an additional low frequency band of 200 to 1500 kc. The equipment uses an external dynamotor power supply providing 400 volts dc a t 225 ma and 1250 volts a t 250 ma. This is in addition to the 28 volts dc for the operation of the tube filaments and motors. The equipment is preset to any frequency within the range specified and may be automat-
ically tuned upon selection of a particular channel by the radio operator. The power output is approximately 200,-watts from an 813. The unit uses a VFO, but h a s a crystal calibrator included to check the frequency. At high altitudes a switch is actuated to reduce power.
Output is either CW o r voice, amplitude modulated and keying is'accomplished by means of a keying relay.
1
The AS-81/GR is a direction finding loop attachment for use with any communications receiver covering the frequency range desired. It uses one of four loops, depending upon the band desired, and supplies loop directivity to the receiver. A twelve volt vibrator within t h e s e t suppl iesa l l necessary high voltages.
Loop =27/GR A T -28/GR AT-29/GR A T - ~ O / G R
Color Code White Red B lue Yellow
Freq. Range 1.1 to 2.1 mc
Provision is made for loop balance and sense to determine the direction of the received signal.
REF. NO. - R l R2 R 3 ~ ~ 4 '35 R 6 R 7 C l C2
DESCRIPTION
I MEG 1/2 WATT
s o o n 112 WATT 50,OOOn l / 2 WATT 2 5 , 0 0 0 n 1 0 WATT 1 5 o o n POT 5 o o o n 114 WATT 12-252 Y Y F 6 0 0 U U F 5 0 0 V
REF. NO.
c3.=4
DESCRIPTION
.Ol UF 3 0 0 V
REF. NO. DESCRIPTION - LM-I NEON LAMP LM-2, LM-3 PILOT LAMP FUI 2 AMP FUSE SW, SWITCH, ROTARY
SWz,SW3 SWITCH, TOGGLE RFCI JMH 1 5 n RF Cp 55 TURNS # I6 ENAMELED COPPER WIRE TI TRANSFORMER, POWER
b Capantors.- C i m t Element
c, c, c, C. (none) c,, C,, C,. C. (see c c. Cl0 c , , c,, c,, C,. c,, c,, c,, el8
The BC-189 is a predecessor of the BC-312. I t covers the range of 150 kc to 13 mc by twelve s e t s of plug in coil d rawers . The rece iver i s a superheterodyne with a n IF of 470 kc. The BC-189A has an IF of 850 kc. When operating near the IF frequencies s o m e instability will be noted.
Power is supplied by a dynamotor, and the input i s 12V dc. Output is to a pair of headsets.
circuit element dssignotion, and rolues.-n. Rcststors".- Value -
30.000 ohms 75,000 ohms 1 megohm
500.000 ohmc 1 megohm
2.000 ohms 30,000 ohms
fi0 ohms 1.000 ohms 3 . M ohms
..ln arldltlon fa thr rrrlsfo~s lndicatcd on the clrcult diozram of Aeure 2. roll sets C 112. C-142-A. C-I*. and r 113 A have a 2 ~ . 0 ~ - o h r n reslrfor tRS-148) connertcd to the secondary tcrmlnnlr of buih transformers I., and 14
The BC-375, built by GE, building 89, 1 River Road, Schenectady, N. y, , is an archaic behemoth whose design was finalized in 1935, and was produced in tremendous quantities for war destruction in planes and other expendable vehicles. The design engineers responsible almost had heart attacks when they received an ARC-5 for test comparison and found it to be a fraction of the s i z e and weight, infinitely more stable and put out m o r e power.
The BC-375 is designed for 28 volts; the BC -191 for 14 volts, otherwise they a r e almost identical. There a r e a few moderately usable par ts in the transmitter and t h e tuning units make nice cabinets.
Radio transmitter BC-101-(*) with transmitter tuning unit TU-6-A or -B--schematic diagram.
These equipments a r e r ece ive r s used for communications purposes. They a r e basically identical in appearance, The BC -31 2 is a supe r heterodyne rece iver covering a frequency range of 1500 to 18,000 kc. I t operates f rom a 12 volt sou rce (dc) a t about 7 1/2 amperes , fo r those models with thermostatic hea te rs f o r oscil lator stabil i ty, and about 4. 5 amperes for those models without such heaters. An a c model, operating a t 110 volts a c i s known a s the BC-342. Those models using hea te rs consume about 100 watts, while those without use about 75 watts. The intermediate frequency is 470 kc.
The BC-314 is the low frequency counterpart of the BC-312. It operates over a frequency range of 150 to 1500 kc. It has an IF of 92.5 kc. The BC-314 has an a c counterpart in the BC-344,
The BC-438 is a heterodyne frequency meter with a range from 195-215 mc. It uses a crystal a t 4.1 mc to provide a 20.5 mc standard frequency (205 mc tenth harmonic) and a variable 19.5 - 21. 5 mc oscillator to zero beat the unknown signal for measurement (again using the tenth harmonic of the oscillator) o r for providing a signal for receiver adjustments.
The BC-474-A is a portable AM radio transmitter-receiver covering the frequency range of 2.3 to 6. 5 mc. It is capable of operation on both CW and voice. Power is supplied by a 90 volt dry cell and a 1.5 volt dry cell, or a hand generator, GN-44-A for the transmitter. Transmitter output is rated a t 4 watts. A 35 foot antenna and a 35 foot counterpoise a r e required for proper output and operation.
The receiver is a superheterodyne with an IF of 455 kc. The input is to an R F stage and the output to one o r two pairs of high impedance headsets. T h e transmitter is VFOtd and uses a separate power amplifier for the output stage. The power amplifier is keyed for CW operation.
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Receiver achematio, Receiver
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C 5 100 MMF i9 1000 MMF 1 4
Tronsrnitter wchematic, Receiver and Tra?u~ni t ter BC-474-A.
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The BC-620 is a low power, frequency modulated transmitter-receiver unit, covering the frequency range of 20 to 27.9 mc. It operates on two preset c rys ta l controlled frequencies, which a r e selected by a front panel switch. It is designed to operate from batteries or a s ix or twelve volt power supply system. It was originally intended for mobile or portable use,
The receiver is a superheterodyne with a 2.88 mc intermediate frequency. The receiver local oscillator is crystal controlled. The transmit ter operates with a VFO. The VFO is held on the proper frequency by a reactance tube which is in turn operated by receiving a smal l portion of the transmitted frequency, and correcting the VFO to IF.
Transmit ter power output is approximately one watt. The receiver uses crystals in the frequency range of 5.7067 mc to 8.340 mc. The power require- ments of the BC-620 a r e a s follows:
FUNCTION Battery Battery No. Volts Amperes
Receive Rec ''A l 7 BA -40* 1. 5 0.7 Receive Rec "B" BA -40* 90. 0 0.025 Trans. Rec llA l1 BA -39&BA-40* 1 .5 0.7 Trans. Rec llGTT BA -39&BA -40*90.0 0.045 Trans. TR. "A1' BA-39&BA-40* 7.5 0.300 Trans. TR. "Bt1 BA -39&BA -40q 50.0 0.045
*BA -39 and BA -40 a r e multi-voltage batteries.
Note: Red dots on the t r immer shafts indicate the side of the slot that should be towards the dial card. The width of the slot is about one-tenth division. In case the red dot has worn off, i ts proper
I position can be found by fully meshing the capacitor. The end of the slot near the 0 of the 0-6 scale is the end that should carry the red dot.
I
The BC-640 is a ground type, rack-mounted transmit ter for the 100 to 156 mc band for general communications with a i rc ra f t It is amplitude modulated, providing 50 watts output over the band. Provision is made for the use of tone modulation when M C W operation i s necessary, Operation is crystal controlled, with frequency changing being accomplished by changing the crystal and the circuits. Crystals used a r e in the 5555.5 to 8666.6 m c range, for a total
multiplication of 18 times. Various sections make up the complete transmitter and each is individually removable for repairs. Input power is 110/220 volts 60 cycles single phase. Minor differences exist between various models such a s the addition of dial locks, and the reduction in the number of meters employed in t h e RC-640(R\
This is the biggest, most powerful TVI generator ever built, and w i t h slight modification will be able to completely blank out a l l vhf and uhf channels fo r miles around. This gives TVI even when turned off.
The BC-645 i s an airborne IFF transceiver for 470-495 mc and transmitted either a pulse o r rriodulated CW signal (30 kc). This unit can be converted for 420 m c ham use, ra ther easily. For conversion details, s e e CQ, December, 1956, P. 66.
The BC-653 is a vehicular transmitter receiver operating from either 12 or 24v dc. On 12 volts the battery drain is 42 amperes while on 24 volts the drain is 30 amperes. Transmitter output is over the range of 2 to 4. 5 mc at a cw power of 50 to 90 watts. Voice power output (AM) is approximately 1/4 of this.
The receiver is the BC-652A and covers the range in two bands. The transmitter is the BC-653A. The antenna uses mast sections MS-49 to MS-53 inclusive and a base MP-37. A T-17 microphone is used for voice. A 200 kc crystal oscillator is built into this equipment to calibrate the transmitter. The receiver uses a 915 kc if .
This is 400 lbs of nothing. Actually, it works pretty well but takes the patience of Job to sor t out the millions of tuning units.
------- . . FUSES
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C 112 ,009 U F O I W O Y CI.0 45 YYFO C l a e O l b O ;:88; Cls& ll lrO 11 190 Z Z O O O OWYS R I P I I 0 " Y l p R I $5 N ~ W O OHUO 'OnATT
C 1 1 3 .005 I T D #ODD Y C # S O WS YFD S W T T R i l e 430 MlYS I? WATT C i l 4 2 1 I M F O 1 0 0 Y C I B I ,005 YFD $000 V 1 4 2 2 ZZOOD O M S Z W A I T R I I 7 3-0 M Y 9
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This equipment is a s ix tube, push-button radio receiver designed for portable o r vehicular operation. It is powered by a two volt storage battery, a BB-54-A. The power supply consists of a vibrator unit complete with a recharger for the stgrage cell. The BC-728-A operates over a range of 2 to 6 mc on four preset frequencies chosen by the operators selection of appropriate push buttons.
Button A has a possible range of 2.0 to 2 .6 mc, button B covers 2 .6 to 3. 5 mc, button C covers 3.5 to 4. 5 mc, and button D covers 4. 5 to 6 mc. The receiver operates with AM signals and has an intermediate frequency of 455 kc.
An external whip type antenna, AN-75-A is used with the equipment and a jack is provided for earphone operation when desired. A loudspeaker is normally used with this equipment, and it is mounted within the case of the BC-728-A.
The BC-745, a smal l transmitter-receiver known a s the "Horsey-Talkyv1 covers 2-6 nic crystal controlled. The receiver has an I F a t 455 kc, and the transmitter is grid modulated. Power under 1 watt. Power: Filament, 1. 5 v, Plate, 67 volts receiver; 120 v transmitter
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The BC-906-C is a frequency meter of the absorbtion type. The BC-906 is housed in a metal case with a door to protect the dial, meter and switches, but which also se rves as a housing for the calibration chart and the antenna. In use the antenna is plugged into the socket located through a hole a t the top of the case. The sensitivity of the meter depends upon the length to which the antenna is extended and the antenna should be adjusted in length t o maximum sensitivity. The frequency range of the BC-906 is 150 to 225 mc. The detection is accomplished by a diode section of alS5, the pentode section of that tube acting as a meter amplifier. The required voltages a r e 1. 5 volts for the filament, and 45 volts for the plate s UPP~Y
This i s the military version of the Hammarlund Super-pro. 455 kc IF. These receivers normally use a separate power supply, or may be battery operated .Six, 45 volt batteries are used, 5 for the plate, 1 for bias. The filament uses a 6 volt battery.
Model Commerc ia l Equivalent Frequency Range
Th
e B
C-9
69A
is
a s
up
erh
eter
od
yn
e re
ceiv
er c
ov
erin
g t
he
VL
F b
and
of
15 t
o 1
50 k
c.
Th
e in
term
edia
te f
req
uen
cy i
s 45
5 k
c
Po
wer
is
supp
lied
by
an A
R-6
1A
supp
ly o
r a
PE
-223
. It
may
b
e o
per
ated
on
any
pow
er s
uppl
y pr
oduc
ing
12 v
olt
s a
t 2
amp
eres
an
d 2
50 v
olts
at
120
ma
dc.
T
he
rece
iver
em
plo
ys
a E
FO
, n
ois
e li
mit
er,
cry
stal
fil
ter,
AV
C a
nd u
ses
a V
R t
ube
for
osc
illa
tor
stab
ilit
y.
The SCR -300-A, whose major component is the receiver-transmitter BC -1000 -A is a low power, battery operated set. It is primarily designed to be carried on the back of one man like a knapsack. It operates within the frequency range of 40.0 to 48.0 mc. The transmit ter and receiver both tune to the s a m e frequency
I simultaneously. The emission is FM and each transmit channel is 200 kc from the previous one, having been hand calibrated a t the factory. Output is approximately
i one half watt to the antenna. Harmonics of a 4.3 m c crystal within the equipment a r e used fo r calibration points. The equipment employs squelch, AVC and AFC to maintain the t ransmit ter on frequency. One special note is that during transmit periods the DIAL LIGHT AND CALIBRATE button should not be depressed. The IF frequency of the receiver is 4.3 m c for the f i r s t IF stages, and 2. 5 m c fo r t h e second I F stages, t h e receiver being of the double conversion superheterodyne type.
Power requirements a r e 4.5 volts (filament) a t 0.3 amperes and 90 volts plate supply a t 25 ma. On transmit the requirements a r e 4. 5 volts a t 0. 5 amperes, 90 volts plate supply a t 25 ma, and 150 volts a t 45 ma. Normally a 90 volt and a 60 volt battery a r e connected in series for the transmitter supply In operation a telephone headset or earphones and lip type microphone a r e used by the operator.
- s 2
Fu
CD
a "&
*
g-
4
3 L"
E 2 z g
(19 3-
C g
Ore
* e.
P3
%! E
. w
The
BC-1206 r
ecei
ver
is
a 200
to 400 k
c su
perh
eter
odyn
e us
ing 28 v
olts
on
the
fil
amen
ts a
nd p
late
s.
The
out
put is
to
eith
er l
ow o
r hi
gh i
mpe
danc
e he
adse
ts.
Th
e in
put is
des
igne
d to
op
erat
e on
ver
y s
ho
rt a
nten
nas
such
as
a
re g
ener
ally
fou
nd i
n ai
rcra
ft.
Th
e in
term
edia
te f
requ
ency
is 13
5 kc
. T
he
enti
re r
ecei
ver
is
desi
gned
fo
r in
stal
lati
on o
n th
e pa
nel
of a
pla
ne,
the
size
be
ing
4 by
4 b
y 6 5{8
inch
es.
The
BC
-133
5 is
a s
elf-
cont
aine
d F
M t
ran
smit
ter
rece
iver
cov
erin
g th
e ra
ng
e of
27
to 3
8.9
mc.
T
he
unit
op
erat
es o
n ei
ther
of
two
chan
nels
, ea
ch c
ryst
al
cont
roll
ed.
One
cry
stal
is
used
per
cha
nnel
. T
his
co
ntro
ls t
he r
ecei
ver.
T
he t
ran
smit
ter
is m
onit
ored
by
the
rec
eiv
er d
urin
g tr
ansm
issi
on
s an
d th
is c
ause
s th
e tr
ansm
itte
r os
cill
ator
to
be
held
on
freq
uenc
y by
m
ean
s of
a r
eact
ance
tub
e ac
ross
the
tra
nsm
itte
r os
cill
ator
. A
ca
rbon
mic
roph
one
such
as
a T
-17
is
used
wit
h th
e 13
35.
The
pre
ss-t
o-ta
lk
feat
ure
of
the
mic
roph
one
ener
giz
es t
he t
ran
smit
ter
fila
men
ts.
The
rec
eiv
er o
utpu
t is
to
a h
eads
et.
A
tele
phon
e ty
pe h
ands
et m
ay b
e us
ed.
The
rec
eiv
er I
F
is 4
.3
mc.
T
he r
ecei
ver
loc
al o
scil
lato
r is
bel
ow t
he s
igna
l trl
C]
freq
uenc
y an
d u
ses
the
four
th h
arm
onic
of
the
crys
tal.
, CL
w T
he p
ower
sup
ply
use
s ei
ther
6 o
r 12
vol
ts (
neg-
at
ive
grou
nd).
P
rovi
sion
is
mad
e by
the
inp
ut p
ower
pl
ug a
nd a
sw
itch
to
sele
ct b
etw
een
inpu
t vo
ltag
es.
Fo
r po
siti
ve g
roun
d ve
hicl
es i
t w
ill
be
nec
essa
ry t
o
rev
erse
the
hig
h vo
ltag
e le
ads
goin
g to
the
syn
chro
- no
us v
ibra
tor
The
BC
-133
5 is
man
uall
y us
ed w
ith
a w
hip
ante
nna
thou
gh
a co
axia
l ou
tput
is
also
ava
ilab
le.
Pow
er
outp
ut i
s ap
prox
imat
ely
2 to
4 w
atts
.
NO
TE
CH
AN
NE
L S
WIT
CH
5
-21
, 5
-28
5~
2C
5-2
0,
AU
RE
SIS
TOR
V
AL
ES
IN
W
U
lLE
SS
O
TH
ER
WIY
S
PE
CIF
IED
5 Z
E,
5 2F
. S
-2G
S
-2H
, 5
-2J
'SH
O*I
N
IN
ALL
C
AW
ITO
R
VU
UE
S
IN
UU
F W
ES
S O
TH
ER
WIP
S
PE
CIF
IED
8
PO
SiT
ON
Th
e B
N is
an
IF
F t
ran
smit
ter
rece
iver
op
erat
ing
in
the
15
7 to
18
7 m
c b
and.
It
is
des
ign
ed t
o o
per
ate
fro
m llOV
60 c
ycl
es.
So
me
mo
del
s m
ay h
ave
bee
n m
odif
ied
to 4
00 c
ycl
es b
y a
chan
ge i
n th
e b
low
er m
oto
r on
ly.
Th
e re
ceiv
er is
of t
he
sup
er-
het
ero
dy
ne
typ
e us
ing
a w
ide
band
IF
co
ver
ing
28
to 3
2 m
c.
Th
e ou
tput
of
the
IF
is d
etec
ted
and
am
pli
fied
by
a vi
deo
amp
lifi
er w
ith
a re
spo
nse
fro
m 1
00
cp
s to
200
kc.
CRC -7
The AN/CRC-7 is a hermetically sealed transceiver with a watertight battery compartment. Transmission is on MCW o r AM. Originally designed for operation a t 140.58 mc the hermetically sealed portion may be opened and the crystal changed and the coils trimmed to the 2 meter band. The crystal should be in the 18 mc band for multiplication factor of 8 times. The stages should be tuned with the antenna fully extended.
The microphone also serves as headset on receive. Power is switched by turning the appropriate filament switching. See conversion CQ-A pril '58.
BOTTOM VEW OF SOCKET 6 PL
#PRESSING THE TRAN
KEY ALSO DEPRESSES THE REC KEY.
MIWE-HEADPCL)NE
ALL EAWCIU.I(QS IN u-MADs UILESS OlWLRWltL NOTED
ALL R€MTANCLI IN OHMS U lusS OnimWlY Nom
TYPE 208 CATHODE-RAY OSCILLOGRAPH
DD-825-D-5
The Gibson Girl transmitter is also known a s the AN/CRT-3 because of its similarity to the cathode ray tube shape. It is a transmitter producing 2 1/2 watts on 500 kc and 2 watts in 8280 kc both of which a r e international distress frequencies. It is normally carried in lifeboats or with other survival equipment. In operation it is held between the operator's legs and the hand crank is turned. A ser ies of coded signals used to key the transmitter a r e developed by the crank rotation. A generator i s operated simultaneously to supply filament and plate power to the transmitter. Power is also supplied to a visual lamp for night operation. The antenna is held aloft by either a kite o r a balloon provision being made to generate hydrogen for balloon inflation. Hand keying iS possible.
The DAE is a direction finder. It is a superheterodyne receiver covering the frequency range of 240 to 2000 kc. The input power is 115 volts 60 cps although accessories a r e available for inputs of 24, 32 o r 115 volts DC. The direction finder loop is separate from the receiver for installations aboard ship. The intermediate frequency is 175 kc. The input is from the loop and sense antenna. The output is to head phones of 600 ohm impedance. A BFO is provided f o r CW reception, but no AVC is available.
The Wilcox F-3 (ARC -3) receiver i s a rack-mounted fixed frequency receiver covering the range of 1900 to 16500 kc range. Some models may cover different frequencies from these in standard groups.
Group 1 Group 2 Group 3 Group 4
The F-3 i s a superheterodyne using a crystal controlled oscillator and has a 455 kc IF. AVC and a Morse suppressor a r e provided.
Th
e G
O-9
is
a N
aval
Air
forc
e tr
ansm
itte
r fo
r u
se o
n se
ctio
ns,
the
mid
dle
one
bein
g a
pow
er d
istr
ibut
ion
pat
rol
airc
raft
..
It is
rate
d a
t 10
0 w
atts
and
co
ver
s a
sect
ion.
In
put
pow
er i
s ll
OV
800
cps
, an
d ei
ther
12
or
freq
uenc
y ra
nge
of 3
00 t
o 60
0 kc
and
3.0
to
18.1
mc.
24
vol
ts d
c.
Th
e eq
uipm
ent is
con
stru
cted
in
thre
e si
de-b
y -s
ide
The
TB
W i
s ve
ry s
imil
ar t
o th
e G
O-9
.
g%' h S ti * rn* a cd %*a
The AN/GRR-5 is a mobile radio receiver used for tactical purposes. It may be used with its internal speaker, o r with handsets or other equipment. It covers a frequency range of 1.5 mc to 18 mc. It can operate from 6, 12 o r 24 volts dc for mobile use, 115 volts 60 cycles for fixed use or from 1. 5 volts a t 350 ma and 90 volts a t 27 ma for portable use. It is capable of reception of AM, CUT, MCW. Provision is made for ten preset frequencies, although the equipment is capable of continuous tuning. A built in crystal calibrator supplies a check point every 200 kc. The intermediate frequency is 455 kc.
The equipment is divided into two sections. The receiver proper is known a s the Radio Receiver R - ~ ~ ~ / u R R while the power supply is known a s the Power Supply P P - ~ O ~ / U R R .
This scan is not authorized to be sold on eBay. If you bought this scanned manual on eBay, then the vendor you bought it from is a Thief who sold you stolen property. Please file a complaint with EBay security and demand a refund.
The signal generator 1-208 covers the frequencies of 1.90 to 4.5 mc and 19 mc to 45 mc. It i s used to align FM equipment such a s the BC-603 and BC-683.
The frequency deviation can be adjusted from 0 to 5 kc on each s ide of the center frequency of the 1.9 to 4. 5 m c band, and from 0 to 50 kc either s ide of the 19 to 45 mc. Five modulation frequencies a r e provided: 150, 400, 1000, 2500
- - - - - - -- . - - - - - - - - - - - - A U D I O O S C I L L A T O R U N I T 7 r------------
------ ------ MAIN P O W E R S U P P L Y 1
-- -6
O Y Y A k r C T Z f l :.?%EMPLY L I
and 5000 cps. External modulation is possible. Up to 0.1 volt is developed at the end of the cable (30 ohm transmission line). Up to 0, 84 volt is available from the high output line. An attenuator is used to se t the output a s needed.
Power is either 1 2 volts dc or 115V 60 cps.
Th
is e
quip
men
t pr
ovid
es R
F s
ign
als
for
the
alig
nmen
ts a
nd o
pera
tion
of
the
RC
-182
and
RC
-282
, an
d si
mil
ar e
quip
men
ts.
It p
rovi
des
sign
als
for
both
IF
and
R
F a
lign
men
ts i
n tw
o ba
nds,
8
to 1
5 m
c a
nd 1
35 to
230
mc
(on
th
ird
har
mon
ic o
f 45
to
76 m
c).
A 5
mc
cry
stal
cal
ibra
tor
buil
t in
, al
low
s th
e us
e of
the
I-2
22-A
as
a he
tero
dyne
fre
quen
cy m
eter
.
The
Jef
fers
on-T
ravi
s 35
0A t
ran
smit
ter -
rece
iver
co
vers
1.5
-12
mc
in t
hre
e ba
nds.
IF
455
kc.
75
Wat
t C
W o
r A
M V
FO
or XTAL.
Pow
er:
12,
24,
32,
115
vdc,
11
5 va
c.
Th
is i
s a
nic
e ri
g.
Mark I1
The MN-26 is an aircraft communication direction finder type super heterodyne receiver. It covers a variety of frequencies and input voltages of either 14 or 28 volts The last letter designates the frequency range and voltage a s given in the following table.
Letter Freq. Range Input Voltage
A 150-1500 kc C (and C A ) 150-1500 kc M 200-850 kc
3 . 4 - 7 . 0 kc W 200-1750 X 200-1750 Y 150-695 kc
3 . 4 - 7 . 0 kc
The MN-26 () requires a remote control box, MN-28, a loop antenna MN-20 or MN-24, azimuth indicators MN-40D or MN-22A, and suitable mechanical (flexible shaft) and electrical cables.
The receiver itself is located remotely in the aircraft s o a s to save cockpit space. For a tuning meter, the MR-57A is used, and the IN-4A i s a left-right meter for homing. The loop is mounted outside of the aircraft and rotates.
I I
PR
C -6
The
PR
C-6
is
a ha
ndi-
talk
ie t
ype
equi
pmen
t op
erat
ing
in t
he f
requ
ency
ran
ge o
f 47 t
o 55.4
mc
on
one
of 47
pre
set
chan
nels
. It
is
freq
uenc
y m
odul
ated
an
d ha
s a
rang
e of
ab
out
one
mil
e.
It h
as a
tra
nsm
itte
r po
wer
out
put
of a
bout
one
-qua
rter
wat
t. T
he e
nti
re
unit
is
self
con
tain
ed i
nclu
ding
bat
teri
es a
nd m
ay b
e ha
nd h
eld
like
a t
elep
hone
. T
he t
ran
smit
ter
empl
oys
four
tub
es,
plus
nin
e in
the
rec
eiv
er w
hich
als
o s
uppl
y A
FC
con
trol
. P
ower
req
uir
emen
ts o
f th
e tr
ansm
itte
r a
re 1.5
volt
s a
t 1
amp
ere,
45
volt
s a
t 14 m
a an
d 90
volt
s at
28
ma.
T
he t
otal
rec
eiv
er p
ower
req
uir
emen
ts
are
1. 5 v
olts
at 440
ma.
an
d 45 v
olts
at 13 m
a.
Th
e
rece
iver
is
a su
perh
eter
odyn
e ty
pe a
nd u
ses
a 4.3
mc
IF.
The
rec
eiv
er l
ocal
osc
illa
tor
is p
rese
t by
cry
stal
co
ntro
l an
d bo
th r
ecei
ver
and
the
tra
nsm
itte
r a
re
tune
d to
the
sam
e fr
eque
ncy.
T
he t
ran
smit
ter
is
reac
tan
ce c
ontr
olle
d to
the
pre
set
freq
uenc
y an
d th
e sa
me
rea
ctan
ce c
ontr
ol is
used
fo
r m
odul
atio
n,
A
volu
me
cont
rol is
pro
vide
d to
adj
ust
rece
iver
lev
el.
A b
uilt
-in
ante
nna
is p
rovi
ded
and
is u
sed
by b
oth
tran
smit
ter
and
rece
iver
. P
rovi
sion
ism
ade
for
use
of
a se
par
ate
ante
nna.
P
rovi
sion
is
also
mad
e fo
r th
e u
se o
f a
sep
arat
e ha
ndse
t w
hen
desi
red.
RAK
The RAK is a Navy low frequency receiver covering 15 to 600 kc. It operates with a power supply input of 115V 60 cycles. Battery operation is also possible.
The circuit consists of two stages of R F amplification and a regenerative detector. Bandswitching is used to cover the total range, and a ser ies of sharp filters a r e employed to eliminate interference.
I::
The
RA
L is
a TRF r
ecei
ver
cove
ring
300
kc
- 23
mc
in n
ine
band
s.
Sen
siti
vity
is
quit
e go
od d
ue t
o th
e re
gene
rati
ve d
etec
tor
and
sele
ctiv
ity
is
achi
eved
with
a v
aria
ble
audi
o fi
lter
. A
sep
arat
e A
C p
ower
sup
ply
is u
sed.
T
he R
AK
is
the
low
fre
quen
cy c
ount
erpa
rt o
f th
is r
ecei
ver.
W
hile
it
is
poss
ible
to
use
the
RA
L f
or
amat
eur
com
mun
icat
ions
, it
is
an a
lmos
t ho
pele
ss
anti
que
and
cert
ainl
y no
t w
orth
y of
any
con
vers
ion
effo
rts.
The
RA
O-7
is
the
Nav
y m
odel
of
the
NC
-100
XA
N
atio
nal
rece
iver
. T
he
mai
n di
ffer
ence
bei
ng t
he a
ddit
ion
of a
sec
ond
rf s
tag
e fo
r re
duce
d ra
diat
ion
fro
m t
he l
ocal
osc
illa
tor
and
the
omis
sion
of
the
"St'-
Met
er.
Th
e R
AO
is
a g
ener
al c
over
age
rece
iver
wit
h no
ele
ctri
cal
band
spre
ad
and
cov
ers
from
540
-kc
to 3
0 m
c w
ith
an I
F o
f 45
5 kc
. O
dd n
umbe
red
mod
els
(5,
7,
etc.
) op
erat
ed f
rom
115
VA
C,
60 c
ycle
s.
SC
HE
MA
TIC
W
IRIN
G D
IAG
RA
M
I
RA
X
Th
e R
AX
air
craf
t ra
dio
equi
pmen
t is
a r
ecei
ver
sy
stem
des
igne
d fo
r th
e U
. S.
Nav
al A
ir F
orc
e an
d co
ver
s a
ran
ge
of 200
kc t
o 27
mc,
in
thre
e in
divi
dual
rec
eiv
ers.
U
nit 1, N
avy
mod
el CG-46115 c
ov
ers
the
rang
e of
200
kc t
o 1500 k
c in
fou
r ba
nds.
U
nit 2
Nav
y m
odel
CG-46116 c
ov
ers
the
freq
uenc
y ra
nge
of 1500 t
o 9000 k
c in
fou
r ba
nds,
and
Uni
t 3,
N
avy
mod
el CG-46117 c
ov
ers
the
freq
uenc
y ra
nge
of 7000
to 27000 k
c in
fiv
e ba
nds.
E
ach
rece
iver
has
a p
ower
sup
ply
cons
isti
ng of
a dy
nam
otor
, th
e ou
tput
pow
er o
f w
hich
is 166
volt
s at
90
ma,
ope
rati
ng f
rom
an
inp
ut o
f 28 v
olts
.
Eac
h re
ceiv
er i
s a
supe
rhet
erod
yne
wit
h un
it 1 h
avin
g an
IF
of 160
kc,
unit
2
havi
ng a
n I
F o
f 915
kc a
nd u
nit
3 ha
ving
an
IF
of 2275 k
c.
Eac
h un
it i
s ca
pabl
e of
re
ceiv
ing CW a
s w
ell
as
voi
ce a
nd MCW, a
nd a
re d
esig
ned
to o
per
ate
fro
m a
com
mon
an
tenn
a si
mul
tane
ousl
y.
RB
L T
he
RB
L i
s a
low
fre
qu
ency
(15
-600
kc)
TR
F r
ecei
ver
usi
ng
a re
gen
erat
ive
det
ecto
r an
d si
mil
ar i
n ap
pea
ran
ce t
o th
e N
C-1
00 (
RA
O, R
BH
).
Th
e R
BL
has
ex
trem
ely
shar
p s
elec
tivi
ty in
bot
h R
F a
nd a
udio
ser
vice
s.
RBM
The RBM is a nomenclature covering two separate receivers, and their associated equipments. Essentially it is a high frequency (2-20 mc)receiver and a medium frequency receiver (200 to 2000 kc. ). Both receivers a r e highly selective using 140 kc in the IF of the M F receiver and 1255 a s the IF frequency in the H F unit.
Each receiver incorporates AVC, BFO, noise limiter, antenna t r immer and headset output. No provision is made for loudspeaker operation. Both units are normally housed within a water-tight cannister which becomes an operating table. Normally the equipment is associated with t h e TBW transmitter. Power is provided either by means of a dynamotor and storage batteries o r an AC supply. Power requirements a r e 190 to 225 volts a t 75 ma. and 12.6 volts a t 3 amperes.
RBS
The RBS receiver i s a shipboard receiver covering the frequency band of 2.0 to 20.0 rnc in four bands. It is capable of receiving both CW and voice AM and operates directly from llOv AC,from a separate power supply. The RBS employs both noise
TUBE FILAMENTS %
limiter and AVC, and features two positions of selectivity, broad and sharp. The inter- - mediate frequency i s 455 kc. A tuned filter i s used in the audio stages to provide for
additional selectivity.
CI
Y Y cd 3 . Ot: * 2 c d " i
& 2 rn .-
The RC-57 equipment is used to control the drone type pilotless aircraf t when used for target purposes, It is a receiver, battery operated, with four audio tone channels, each supplying control signals for use within the aircraf t control system. The equipment operates within the range of 68 to 73 m c and is preset to frequency prior to take-off. Operation from the dry battery supply is approximately 3 hours. Five tuning units a r e available,
Power supplied to the receiver is obtained from dry cells
NOTE SECOND AMP
I T PINm40LI J O N E S SOCKET
RC-57-A, Schematic Diagram Parget Control Receiving Equipment
RDR
TO REMOTE OUTPUT
The Navy RDR is a VHF-UHF receiver covering the frequency range 225-390 mc. Originally part of the MAR equipment i t may be used by itself as it is fully self contained. The receiver is a ten channel crystal superheterodyne capable of remote channel selection and operation. It includes a dynamotor enabling it to operate from a 13 volt dc supply. Some models were made for 24 volt systems a s well. An external power supply may be used when desired.
The intermediate frequency of the receiver is 30.2 mc and the receiver circuits incorporate a noise limiter, AVC, squelch and other features. The crys ta l oscillator operates in tne 4814.815 to 7777.778 kc range. Accessories include remote control devices and a gasoline generator. Many sectional R F stages were released to surplus, a t the termination of the contract.
RDC
The
RD
C (
Nav
y) is
a re
ceiv
er f
or p
anor
amic
rec
epti
on o
ver
the
freq
uenc
y ra
nge
of 2
8. 5 t
o 14
0 m
c, i
n th
ree
band
s.
Pre
sent
atio
n is
pro
vide
d to
an
exte
rnal
osc
illo
scop
e.
Scan
ning
the
fre
quen
cy r
ange
is
acco
mpl
ishe
d by
a m
otor
dri
ve r
otat
ing
the
tuni
ng
capa
cito
r-.
The
rec
eive
r is
a s
uper
hete
rody
ne w
ith a
n IF
of 5.25
mc.
T
he o
utpu
t is
vi
deo,
aft
er d
etec
tion
, an
d th
is is
then
pro
vide
d to
the
osc
illo
scop
e fo
r pr
esen
tati
on.
Sync
hron
izat
ion
sign
als
are
pro
vide
d fo
r th
e os
cill
osco
pe,
but
the
osci
llos
cope
mus
t pr
ovid
e it
s ow
n sw
eep
sour
ce.
The
sw
eep
recu
rran
ce is 15 c
ps a
nd t
his
prov
ides
15
com
plet
e ba
nd i
nspe
ctio
ns e
very
sec
ond.
P
ower
inp
ut is 115
volt
s 60
cyc
les
TO
RE
MA
ININ
G
HE
AT
ER
S
SY
NC
.
THE HAM SHOP 19" GLOBE
Here i s a chance to preserve your breath for ~osterity! This beautiful World Globe, made
by Hammond, is a must for
every hamshack. Plain for $19.95 or lighted for $24.95.
The first 10,000 people who jump at this bargain will get a
year of CQ at no extra charge.
COMMAND SETS This IS a collection of reprints,
containing all of the available in-
formation on the conversion of the
popular "Command" transmitters
and receivers into good ham trans-
mitters and receivers. Invaluable
for Novice, Technician, General,
Advanced and Extra class opera-
tors. 136 ,fabulous, amazing terrific
pages for only $1.50 postpaid.
ATLAS Whatl You don't know where Nicobar Island is? Incredible1 And with the CQ deal on the Hammond Atlas so reasonable too. This is a reference book that will get good usage around your house if you have any kids. 7 Ibs. of colored maps and a gazetteer for only $12.50... and you get a year of CQ.
MOBILE HANDBOOK Anyone who tries to go mobile without getting this book should register for a sanity hearing. Bill Orr, W6SAI has put everything you need to know in this book ... i t is NOT a collection of re- prints like some other mobile handbooks we could mention. Build-its by the dozen. .. solutions to ignition problems, keeping the battery charged, noise.. . only $2.95 postpaid.
CODE RECORD Learning code is a snap with this
record. Speeds from 3 to 16 WPM,
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This 12" LP record has on it all you
need to learn the code for both the
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HAM'S INTERPRETER
Now you can talk in broken
French, Spanish, Italian, der-
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This handy little book gives
all the popular ham conver-
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including letters and num-
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TVI HANDBOOK WIDBM's newly written TVI book (nn
reprints) covers all aspects of curing
TVI from both the Ham's viewpoint
and that of the TV viewer or the TV
serviceman. It includes 2- and 6-meter
TVI as well as Industrial, Medical and
Utility TVI. ~rof;sel~ illustrated with diagrams, photos, charts,
tables and FCC regulations pertaining to radio and televi-
sion interference. Price $1.75 postpaid, USA, $2.00 Foreign.
BINDER There i s no other good way to keep your back issues. Make 'em neat. We supply the binder, with the year em- bossed in gold, not merely a sticker which will come off later. Specify what year you want stamped on your binder. $3.50 each.
BOUND VOLUME
By far the handiest way to keep
your library. Why not go first-
class? This impressive volume
i s only $10.00. We only made
a few of them this year, so
don't expect to get one later.
over please
CQ ANTHOLOGY ALL ABOUT MISSILES & SATELLITES
Most amateurs do not have 0 good Here's 0 book, written in down- file of back issues of CQ. So we've to-earth language, which answers looked back through the Years questions on missile mainfenonce, 1945-52 and assembled all in one fire control, night control trock- place the articles that hove mode ing, testing, fuels, poyload and a lasting stir. The issues contain- many other achievements in rock- ing most of these articles hove etry and space for both scientific long ago been sold out. The price and military applications. Also,
i s a paltry $2.00. featuring the most up-to-date "Directory of 38 Most Popular Missiles and Their Photos," (sup- plied by Department of Defense) as well as a "Glossary of Missile Terms." $1.50 per copy.
HI-FI BOOK
This n i f ty volume contoins the lotest dope on amplifiers, preomp- lifiers and equalizers plus a buy- er's quide of component monufoc- turers! Over 150 - 5l/*'' x 8%" pages of heavily illustrated de- scriptions covering Hi Fi Audio Components-the greatest publi- cation value in its field today.
Only $2.50 per copy.
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AVAILABLE ( Book Division ss i
I I
NOW! 1 300 West 43rd Street I I
( New York 36, N. Y. I I
211 - p a of n.q+mp the Amatour I I must hare 10 get hl* lbnsa and po
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PIv, many cddsh-1 p e n of v0t.l I onformaon for ham *prmr ( UNLIGHTED GLOBE ............................... 19.95 • I
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I .................................... ( COMMAND SETS 1 .50 !
.................. REGULAR LOG SHEETS (100) 1.00 1
SIDEBAND HANDBOOK
Written by Don Stoner, W6TNS, was almost one full year in the preparation of this terrific vol- ume. This i s not o technical book. I t explains sideband, showing you how to get along . with i t . . how to keep your rig
. working right.. how to know . when i t isn't.. and lots of how to build-it stuff, gadgets, receiv- ing adaptors, exciters, amplifiers.
Price, only $3.00.
I .......................... ( SSB LOG SHEETS (100) 1.00 1 I ( HAM'S INTERPRETER .............................. 1.50 [7 I I
TVI HANDBOOK .................................... 1.75 I I
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I I
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City Z o n e State 1 I I ( New York City Residents Add 3% Soles Tax 1
I ! ~ 1 1 - 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 m m ~ ~ ~ ~ ~ 1 I .
This equipment is a multichannel a i rcraf t communications equipment. Several different transmitters, receivers and accessor ies a r e provided to make the equip- ment extremely flexible. More amateur radio conversions have been accomplished on this equipment than on any other surplus yet available.
There a r e many different rrrilihry designations for the units of SCR-274N, including: R-23, 24, 25, 26, 27, 28, 148, BC-453, 454, 455, 456, 457, 458, 459, 451, 696, 946, T-18, 19, 20, 21, 22, 23, MD7, DM-33, DY-8, C-29, RE-2. Many of these numbers may be followed by the letter A , B, C, D, etc.
Receiver audio output i s designed to match 8000 ohm headsets. Receivers with a Bsuffix, a lso have 600 ohm output. When converting, i t i s usual to remove the adaptor box from the front panel and mount an Off -On switch, a volume control, a BFO switch and a phone jack in this space. All the connections for these a r e brought to the plug which mates with the adaptor box, greatly simplifying this operation.
Transmit ters a r e capable of outputs up to 100 watts depending on the plate voltage used. The VFO units of this s e r i e s a r e remarkably stable, and r ival most commercial equipment. They also have a high degree of linearity, and have been widely used by amateurs for sideband applications.
Conversion of the transmitter and receiver units i s covered, almost to the point of exhaustion, in the book "Command Setsnwhich se l ls for $1.50.
The MD-7 uses a pair of 1625's to modulate any of the ARC-5 transmitters. It is almost completely unused by amateurs except a s a source of parts, i. e. the modulation transformer can be quite handy.
AN/ARC-5 (SCR-274N) Major Components
ARC-5 SCR -274N Frequency Band Receiver I. F. Nomenclature Nomenclature Megacycles Function Kilocycles
R-23/ARC-5 BC-453 0.190-0.550 Receiver 85 R-l48/AR~-5 ------- O.19Or0. 550 Receiver 85 R-24/ARC-5 BC-946 0.520-1,500 Receiver 239 R-25/ARC-5 ------- 1.500-3.000 Receiver R-26/ARC-5 BC-454 3.000-6.000 Receiver 1415 R-27/ARC-5 BC-455 6.000-9.100 Receiver 2830 R-28/ARC-5 ------- 100.0-156.0 Receiver
Transmitter Transmitter Transmitter Transmitter Transmitter Transmitter Transmitter Transmitter Transmitter
RADIO SET S C R - 2 7 4 - N RECEIVING EQUIPMENT, SCHEMATIC CIRCUIT DIAGRAM
("7-1111 PI MOTc, I Y F I I I )
TYRCALRAD10 RECEIVER BC-455-8 16.91YCI I - F . 2 8 3 O I C
l' - "tC"or.l.Ds
J I L L I T L A I S ."L I " 0 W " I* 7°C *O*-f*L"T1zTD COSITIO*
&NO 1A010 RCCClVERS IIC-.$J-.. IIC-.S.-l( .NO B C - . l l - . ARC " O R Y Y L I
,"nD.*Cc L.000 D*Y I , " T . O Y 1 I . ".DO IECcIYrmJ I I C - 4 5 3 - L IC- .L* * .
A&wyJ .NO BC- 4,s-# CAM BE S U N T C D I D # YII WGTM L O 1 YPCO.*CC H E I D I F T I
I T - 2 6 0 - . mv ILYOYINC TYT TWO WIRES 0" l c l ) l n m 1 ~ 1 A*. C O * W C ~ ~ N L THEY TO TCWP4.L 6
Y0S.L CO(IIOL, AS I H 0 1 N I* OaWFO LIMLI
SCR
-522
Th
e S
CR
-522
and
SC
R-6
24 a
re v
ery
sim
ilar
in
com
pone
nts
and
can
be
cons
ider
ed
for
pra
ctic
al p
urpo
ses,
to
be i
dent
ical
T
he
SC
R-5
22 i
s p
rim
aril
y a
irbo
rne.
T
he
equi
pmen
t co
nsi
sts
of s
ever
al m
ajo
r co
mpo
nent
s, t
he B
C-6
24 r
ecei
ver
, th
e B
C-6
25
tran
smit
ter
and
the
pow
er s
uppl
y.
The
y m
ay b
e us
ed i
ndep
ende
ntly
or
toge
ther
. T
he
freq
uenc
y ra
nge
is 1
00 to
156
n~
c. R
ecep
tion
is
AM
and
fou
r p
rese
t ch
anne
ls m
ay b
e se
lect
ed,
The
rec
eiv
er i
s a
supe
rhet
erod
yne
wit
h a
12 m
c IF
. O
pera
tion
is
cry
stal
co
ntro
lled
usi
ng 8
to
8.7
2 m
c cr
yst
als.
C
onve
rsio
n to
2 m
eter
s, t
unab
le i
s co
vere
d in
CQ
, Ju
ly,
1947
. T
he
rece
iver
inc
orpo
rate
s sq
uelc
h as
wel
l a
s a
noi
se l
imit
er.
AV
C i
s em
ploy
ed a
s w
ell.
Aud
io o
utpu
t is
tak
en f
rom
the
outp
ut t
'ran
sfor
rrie
r,
term
inal
7
is 4
000
ohm
s;
term
inal
6 is
300
ohm
s an
d te
rmin
al 5
is
50 o
hms,
with
res
pec
t to
gr
ound
.
Th
e tr
ansm
itte
r is
cry
stal
con
trol
led,
fo
ur
chan
nels
. S
econ
d ha
rmon
ic o
f th
e cr
yst
al o
scil
lato
r is
fed
to
two
stag
es o
f tr
iple
rs a
nd t
hen
to t
he f
inal
sta
ge.
Wne
n th
e tr
ansm
itte
r is
mou
nted
wit
hin
the
FT-2
44.A
rac
k a
cam
and
sh
aft
mec
hani
sm s
elec
t th
e p
rese
t po
siti
ons
of b
oth
tran
smit
ter
and
rece
iver
to
ac
com
plis
h tu
ning
. A
n ex
tern
al m
eter
is
plug
ged
in w
hen
tuni
ng s
et-u
p is
nec
essa
ry.
To
tal
pow
er r
equ
irem
ents
are
3 1 OV
23
0 m
a d
c,
Hig
h vo
ltag
e 15
0V (
neg)
8
ma
dc,
B ia
s 12
.6V
3.
5 a
mp,
fi
lam
ent
13
vol
ts
0.5
am
p d
c re
lay
and
mot
or
Acc
esso
ries
inc
lude
the
BC
-117
5A
cont
rol b
ox,
the
BC
-117
1A
cont
rol
box,
th
e B
C-1
176A
co
ntro
l bo
x,
the
PE
-94A
24
vol
t po
wer
sup
ply,
the
PE
-98A
12
vol
t po
wer
sup
ply
BC
-602
con
trol
box
and
man
y m
ore.
T
he A
C s
uppl
y is
des
igna
ted
RA -
62.
SCR -608A
Tne SCR-608A and SCR-628A are basically the same equipment. They operate from 27 to 38.9 mc and are calibrated every 100 kc. They operate on FM or CW. The receivers are tunable, but the transmitters are crystal controlled. Ten preset channels are available. The receiver IF is 2 .65 mc. They operate on 12 or 24 volts dc and have a loudspeaker built into the receiver. The
RAOlO TRANSMITTER 8C 6 8 4 - A APPARATUS LEGEND
CAPACITORS C 161 100 VUF B W V R I 0 6 100 A 1/2 W C lO l 0 . 003UF 8 O O V C 162 4 VF M V R l O 7 3 0 . 0 0 0 A IW C 103 I 0 0 UUF BOO V R l 0 8 3 0 A 1/2 W C I 0 4 5 0 0 UUF 8 0 0 V C 164 0.003 UF 8 0 0 V R 109 75,OW A 2 W TlOl C 105 I 5 UUF 5 0 0 V C 106 3 5 0 UUF MAX-A IR GAP 0 0 2 5 - C 113 6 0 UUF MAX-A IR GAP 0.025. C 115 6 0 UUF MAX-A IR GAP 0.025. C 11 9 0 0 UUF MAX. AIR GAP 0 025.
3 C I 5 2 6 0 UUF M A X - AIR GAP 0 025' (C I 5 8 6 0 UUF MAX - AIR GAP 0 0 2 s
C 100 5 0 0 UUF 8 0 0 V C 109 0.003 UF 8 0 0 V
CJ 1 l 0.003 U F 8Wi V C 112 0.003 UF B W V C'114 2 0 UUF Y I X - AIR GAP 0.025' C 116 2 0 UUF MAX- AIR GAP 0 025 '
C 118 0.003 UF 0 0 0 V C 120 20 UUF MAX- AIR GAP 0.025' C l Z l 0 . 003UFBM)V C I 2 2 0.003 UF 8 0 0 V C l 2 3 0.OIUF U X I V C I 2 4 0.002 U F I 2 0 0 V C I 2 5 W UUF MAX-A IR GAP 0.3M' C 126 2 0 UUF MAX- AIR GAP 0.025. C 121 100 UUF MAX. AIR GAP 0.0195' C 120 IW UUF UAX-A IR GAP 0.0195' C l 2 9 lW UUF MAX- AIR GAP 0.0195. C130 IOO UUF MAX- AIR GAP 0.0195' C131 I 0 0 UUF MAX-A IR GAP O.OI9S C132 100 W F MAX-A IR GAP 0.0195' C 133 lW UUF MAX-A IR GAP 0.0195' C 134 lW UUF MAX - AIR GAP 0.0195' C 135 lW UUF MAX-A IR GAP 0.0195' C 136 100 UUF MAX-A IR GAP 0.019:- C137 0 .5UF 6 0 0 V C 138.1 4 1 UF 6 0 0 V C 138.2 0.1 UF 6 0 0 V C130 0 .5UF 6 0 0 V C 140 3 0 U F 5 0 V C I 4 l 0 . 5 U F 6 W V C 1422 0.1 UF 6 0 0 V C 142.2 0.1 UF 6 0 0 V C 143 0.5 UF 6 0 0 V C I 4 5 Z U F IOOOV C 146 4 0 0 3 UF BOO V C I 4 7 1 7 5 U U C B 0 0 V C 148 4 0 0 3 UP BOO V C I 4 9 0.001 US 1200 V C I 5 0 0.001 UF BOO V C I 3 I 5 0 W F BOO V
- - - . - -- - - -
T U S H BUTTON A S S E M B U I CRYSTAL SELECTORS
\ PUSH BUTTON ASSEMBLY 120 I ANT CAP SELECTORS
0 1 2 1 ANT CUR-TUNE 0 122 RECEIVER TUNE -OPERATE -- - - - ~
0 124 O N - O C F POWER SUPPLY 0 I 2 5 METER SWITCH 0 126 TANK-OTHER USE SWITCH
L*UP E 101 -PILOT L A M P
IYlL F 101 V2 AMPERE FUSE'
,!&!!4 J 101 MAGNETIC MICROPHONE J I 0 2 CARBON MICROPHONE
s!zu Li 101 157 RF PLATE CHOKE L 10.2 OSC PLATE L I 0 3 4 I S 1 RF PLATE TUNING L 104 MODVLATIOY L 105A RC CHOKE i 106 TRIPLER -PLATE TUNIWG C IO7 WUBL tRCR lO TUNING L I 0 0 DOUBLER PLATE TUNING L 110 POWER AMP TUNIkC L 11 1 ANTENNA COUPLINC L 117 OSC GRID FILTER L I 1 8 TRIPLER GRID TUNING L 119 RECTIFIER PLATF Tl lX lNG L.120 POWER AMP RF CHOKE . - L 121 POWER AMP RF GRID CHOKE L 122 POWER AUP ANTI-SING L 123 Ft l AMFNT CHOKE
M E - -- M !O ANT CUR-TUNE METER
POTENT DUETER PI01 5 0 . 0 0 0 n SlDETOK CWTROL
TRANSMITTER P C I 0 3 OYNAMOTOR P G 104 OYNAMOTOR
C 153 2 0 U U I MAX-AIR GAP 0.025. RESISTORS C 1% 0.003 UF BOO V R 101 IW.OOO A I / 2 W C 455 0.003 UF BOO V R I 0 2 667.- 25W C I 57 2 0 UUF MAX.AIR GAP 0.025. R I 0 3 250 ,006 A I W C I 5 8 0.003 UF BOO V R I 04 70,000 A lV2 W C 159 0.01 UF 3 0 0 V R I 0 5 50 .000 A 'h W
R l l O R l l l R I 1 2 1 1 1 3 R114 R I I 5 (1116 R l l l R118 (1119
I I
TRANSFORMERS I T 101 AF INPUT T 102 AF CUTPUT
THERMOCOUPLE DYNAMOTOR 0 M . M TC 101 ANT CUR THERMOCOUPLE
UPACITORP C MI 0 . W 3 UF I
?IriUQSI*, c MZ a003 UF I TO 101 OVEN THERMCSTAT
VACUUM TUBES V 101 VT- 164 (1619) # I 0 2 V1. 164 (1611) Y 103 VT . . 62 !v61P'
RELl lJ s 5 ! A l u L m L ~ 9 5101 U iTENN4 SWITCti,NG S l O 2 DYNAMOTOR START NG 5 1 0 3 RECEIVER 0 i S A B l l ' ~ r n
transmitter produces 20 watts output with a frequency deviation of 40 kc. The ; crystals are in the 375 kc to 540.277 kc range. On 12 volts the system draws 24 amperes.
On 24 volts the system draws 14 amperes.
Frequency changing is accomplished by means of the pre-set push-button. The receiver is known a s the BC-683 and the transmitter a s the BC-684.A.
Th
e SC
R-6
08A
and
SC
R-6
28A
are
bas
ical
ly t
he
sam
e e
quip
men
t.
The
y o
per
ate
fro
m 2
7 to
38
.9 m
c an
d a
re c
alib
rate
d e
ver
y 1
00 k
c.
The
y o
per
ate
on F
M o
r C
W.
Th
e re
ceiv
ers
are
tuna
ble,
but
the
tra
nsm
itte
rs a
re c
ryst
al c
ontr
olle
d.
Ten
p
rese
t ch
anne
ls a
re a
vail
able
. T
he
rece
iver
IF
is
2.6
5 m
c.
The
y o
per
ate
on 1
2 o
r 24
vol
ts d
c an
d ha
ve a
lou
dspe
aker
bui
lt i
nto
the
rece
iver
. T
he
tran
smit
ter
prod
uces
20
wat
ts o
utpu
t w
ith
a fr
eque
ncy
devi
atio
n of
40
kc.
Th
e cr
yst
als
are
in
the
375
kc
to 5
40.2
77 k
c ra
nge.
O
n 12
vol
ts t
he
syst
em d
raw
s 24
am
per
es.
On
24 v
olts
th
e sy
stem
dra
ws
14 a
mp
eres
.
Fre
quen
cy c
hang
ing
is a
ccom
plis
hed
by m
ean
s of
th
e p
re-s
et p
ush-
butt
on.
Th
e re
ceiv
er is
know
n as
th
e B
C-6
83 a
nd t
he
tran
smit
ter
as
the
BC
-684
A.
3500
-600
0 kc
bat
tery
ope
rate
d ha
ndy-
talk
y.
455
kc I
F.
Cry
stal
co
ntr
olle
d.
Pu
llin
g th
e an
tenn
a op
erat
es t
he u
nit.
Pow
er:
1.5
~/.
35a
and
103.
5v/.
016
a fo
r re
ceiv
e an
d .0
35
am
ps
for
tran
smit
.
MI2
T
RIN
S .
R F
P
W'R
A
MP
Cli
PlC
lTO
I IY
IPII
BL
El
C.P
AC
,IOR
iV
LP
lls
ir,
The
AN
/SP
R-2
is
cla
ssif
ied
as
a ra
dar
rec
eive
r.
Its
purp
ose
was
to
inte
rcep
t en
emy
rada
r si
gnal
s fo
r an
alys
is p
repa
rato
ry t
o co
unte
rmea
sure
s.
It c
over
s th
e fr
eque
ncy
rang
e of
10
00 t
o 60
00 m
c, b
ut c
an b
e us
ed t
o 10
000
mc
if th
e si
gnal
s a
re
stro
ng e
noug
h.
Tw
o tu
ning
uni
ts a
re a
vail
able
, th
e T
N-
56
/~
~~
-2
w
hich
cov
ers
1000
to
300
0 m
c, a
nd t
he T
N-5
7 w
hich
cov
ers
3000
to
6000
mc.
H
ighe
r fr
eque
ncy
oper
atio
n is
pos
sibl
e be
caus
e th
e an
tenn
a in
put is
dir
ectl
y to
the
mix
er a
nd
harm
onic
s of
the
osc
illa
tor
are
use
d to
con
vert
the
sig
nal t
o th
e 30
mc
IF.
An
outp
ut
is p
rovi
ded,
bef
ore
dete
ctio
n, f
or
a co
nnec
tion
to
a 30
mc
pano
ram
ic a
dapt
er s
uch
as t
he A
PA
-10.
TB
S R
ecei
ver
The
TB
S r
ecei
ver
is a
60
to 80 m
c cr
ysta
l co
ntro
lled
sup
erhe
tero
dyne
. It
em
ploy
s a 5.3
mc
IF a
nd o
pera
tes
dire
ctly
fro
m 1
10 v
olts
60
cps.
E
ach
- st
age
of t
he R
F a
mpl
ifie
rs,
the
mix
er a
nd t
he o
scil
lato
r m
ulti
plie
r is
se
para
tely
tun
ed a
nd m
eter
ed w
hene
ver
nece
ssar
y.
The
TB
S in
clud
es a
noi
se l
imit
er,
AV
C,
outp
ut m
eter
and
is
desi
gned
to
ope
rate
fro
m 50
ohm
coa
x.
The
out
put is
600
ohm
s.
Fo
r co
nver
sion
da
ta,
see
CQ
, M
ay 1958, p
. 55.
r* t- gc
d t-
f..
-1 --
m
i,
TBX
Transmitter-receiver. The receiver tunes from 2.0-8.0 m c with a n IF of 1515 kc; the t ransmit ter tunes from 2.0-5.8 mc, running 40 watts input on CW and 10 watts on phone. Power: 6 volts bias, 1. 5 volts filament and 90 volts for the receiver; 12.6 vdc a t 2 amps and 500 volts a t 80 ma fo r the transmitter.
I LEN C A B L E C O L O R CODE , - PIN COLOR
63 B L A ~ . ~
.64 G R E E N 6 3 F E D 66 WHITE
HAND CRANKS A 5 0 1 FY I
symbol V h R207 10k f 10% %w. R208 I Mq. f 1% Hw RZm I Mq. f 1090 %r R210 Sok f 10% Hw R2l1 ISOk *lo% %v R2l2 2Ok f 10% Potentiometer
Symbl v .1~ symbol v . 1 ~ sy~bol v .1~ CZOI 13.3 mmld Var. C202 139.4 mmld Var. C203 250 mmld f 10% 500" CZM 7-45 mmfd Var. CZOS 7-15 mmfd Vnr. CZo6 7.45 mmfd Var. C207 0 02 mld f 1 0 9 I o v C208 700 mmfd f l d SOOv CZCp lW mmfd f 1% 500" C2lo 300 mmld f 1% SWv C2II 7-45 mmfd Var. C212 7-45 mmfd Var. C213 7-4s mmfd Var. Cl14 745 mmfd Var.
C229 13.3 mmld Var. C230 0 . W mld f 1070 5DOv C23l 200 mmfd f 5% 500v C232 0 . M mfd f 10% 5Wv C233 200 mmM f 5% SWv C234 I5 mmfd f 10% 5Wv C235 500 .nrnld f 10% SWv C236 I0 mld Elm ISOv (7237 25 mmld f 10% Ceramic C238 25 mmld f lo", Ccmmic C239 25 mmfd f 10% Ceramic C240 250 mmfd f 10% W v C24I 0 5 mfd f 20% MOv
Symoi v.1~. C3Ol lW mmld f 2% MOv C301 111 mmfd Var. C303 25 mmfd Var. C3M 0.01 mfd f 10% MOv C305 0.01 mid f lO9 MOv C306 0.Wl mld f 10% MOv C307 193 mmld Var. C308 0.001 mfd f 109,6mv
Symbl Value
R310 1.43 Ohm-Evrc. R311 I4Ok-Evrc. R312 0.4 Ohm-Evae. RSl3 20k f 10% 8v R314 20k f 10% 8w R315 2 M q f 10YO Mw R316 33k f 10% Iw R317 100* f 5% %w R318 100k f S % %w
RJ19 68k f 10% Hw R3lO I lk f 10% I r R321 100k f IW~Poantiomrtrr R322' 68k f loc: %.- R323 22 Ohms 2 10% I w R324 2 &leg. f 10% %w RJ25 IOk f 5 % Ww R326 ISOk f lW,L %w R327 68k f 10% %w
symbol Val-
C3l8 0.5 mld f 20% W(Lv C319 I mld f 10% 6Wr C320 1 mfd f 109, M4v C321 0 . W mld +lOC/o 5OOv C322 e.0001 mld f 10% SDOv C323 CJ24 O W 0.006 mfd mld f f 10% 10% 500" SWv
RECEIVER SECTION (OSWITCH SEOI WOIN IN EXTREME ,CKW15E kBAU0 3) POSITION
CONNECTIONS
VIEWED FRCU BOTTOY,
IAXT/G -
TRANSMITTER ACCESSORY BOX I
TUBE SOCKET CONNECTIONS VIEWE0 FROM BOTTOM
TCK The Navy TCK ser ies
transmitters a r e designed for semi permanent o r perm- anent installations. The output is a conservative 400 watts CW and 100 watts AM over the frequency range 2000 kc to 18,100 kc in six bands. The output stage utilizes two 813 in parallel. The oscil- lator is VFO o r crystal.
crystal calibration of the VFO by an internal 100 kc standard. AM is accomplihsed by modulating the driver stage to the final by means of the 837 suppressor grid, which in turn varies t h e drive
Power requirements a r e 1800V dc a t 420 ma, 500V dc a t 300 ma, 115V dc a t 500 ma and 12V dc a t 800 ma.
I
TCS ... wn.c-
r - -7 -7 - - - - -7
TRANSMITTER UNlT SCHEMATIC
The TCS is a Navy transmitter-receiver equipment providing crystal controlled o r tunable communications over the 1.5 to 12 m c band. The transmit ter is conservatively rated a t 25 watts CW and 10 watts AM phone. The receiver is a superheterodyne with an IF 455 kc. The oscillator is on the
HANDSET SCHEMATIC
POWER-SUPPLY UNlT
high side. A separate control box is used when a loudspeaker is required. The main power supply operates from 12 volts dc, although other supplies were made avail- able for operation from 12, 24, 32, 115 volts dc and 115 volts ac.
An antenna tuning unit is provided for the TCS, consisting of a loading coil tapped a t appropriate points. Relays a r e provided for switching and p ress to talk operation. The various stages of the transmitter a r e tuned by the VFO know, with fixed adjust- ments being located under the calibration. chart. The output circuit consists of a pi-network which will match a wide range of antenna impedances,
TS -34/A P
The TS-34 is an extremely flexible portable oscilloscope. It operates from 110 v a t from 50 to 1200 cycles and draws 90 watts. The sawtooth horizontal sweep is variable from 10 cycles to 50 kc in three ranges and a s e p a r a t e input is provided for direct connection to the plates. A Start-Stop sweep is available fo r examining pulses. The sensitivity is .1 to 100 volts. The TS-34 uses a 2'' ( with a built in magnifying glass. There a r e provisions for internal o r external sync. This is a good item for any ham shack.
X W
The AN/WX-1 is an electron flash device, suitable for photographic.purposes. It originall.] was used a s an identification device for military vehicles, providing one pulse of light which could be aimed a t the ground vehicle requiring identification. It is visible up to 3 miles in daylight. A suitable light shield is employed to aid in directing the lamp beam. The power supply is operated by s ix o r 12 volts in the case of the P P - 4 9 / ~ ~ ~ - 1 or twelve or 24 volts in the case of the PP-~O/VVX-1~. The power supply generates 2000v DC for lamp operation -- DANGER HIGH VOLTAGE.
. Idm:,firai,"n to,",, nlnill
CIRCUIT ELECTRONIC DESCRIPTION QUAN. REF: NO. TYPE NO.
11 A-1128 TRANSFORMER I
12 12x3 TU8E,RECTIFIER 2 I 3 W- 5 0 RESISTOR 5 0 0 OHM 10 WATT I 14 W- 7 8 RESISTOR 5 OHM WATT I
15 W-59 RESISTOR 200,000 OUM I WATT 6 16 W - 4 3 RESISTOR so o n w lo WATT I 17 W-42 RESISTOR 5 OHM 10 WATT I I 8 W-169 RESISTOR .25 OUM 10 WATT 4
GREEN BIAS CIRCUIT 19 S-214 CONNECTOR I 2 0 A-1318 R F CHOKE I
I FOR 12 VOLT OPERATION USE E-32 2 0 AMP, 4 A G FUSf
The AN/VRC-8-9 and 1.0 a r e three equipments that a r e primarily identical except for frequency range of operation. The AN/VRC-8 covers the range of 20.0 to 27.9 mc. The AN/VRC-9 covers the range of 27.0 to 38.9 mc. The AN/VRC-10 covers the range of 38.0 to 54.9 mc. The emision is FM and provision is made for voice and mcw (FM) operation. Provision is made for preset o r continuous tuning type of frequency control. Push to talk as well a s remote operation a r e features of this equipment. The power output may be either 2 watts o r 16 watts depending upon the operation a t low or high power. The receivers a r e extremely sensitive, being able to provide 30 db of quieting for a one-half microvolt signal. The input power is 12.6 volts a t 2.3 amperes for receive and 11.9 amperes f o r transmit conditions o r 24 volts a t 1.5 amperes for receive and 7.3 amperes for transmit, under high power output. The basic receiver- transmit ters have been assigned t h e nomenclatures a s follows.
R T - ~ ~ / G R C for t h e AN/VRC -8 R T - ~ ~ / G R C fo r the AN/VRC-9 R T - ~ ~ / G R C for the AN/VRC -10
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. . . . . . . . in your subscription to CQ : Alright now. -One two three! Wake Up!
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sent to:
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B A R R Y ' S B E S T B U Y S - - 1 TCS Noise Limiters- Complete Adaptor Filter Choke--.35 Hy. @ 2 Am s (2.2 Ohms Super Pro Choke-50 Hy. @ 120 Ma.
.......................... m unit ./spec. sheet 99 I each DC resistance) Herm. SM.-~PI. Open Herm. sd. (1 150 Ohms D C resistance) 6% I frame ................................................... $3.95 Ibs. ....................................................... 1.00
4 Ti 7 Mike/new ..................................... $4.95 I TS-78/U Tune-up "Dummy" Load-Excel- Super-pro C h o k d 5 Hys. @ 120 ma- 1 Hi-Fi SpeciaCW.E. 3008 Audio Output lent for citizen Band or VHF . . . . . . . . . . . $1.00 920 Ohms-H.S. ................................ $1.00
........................ I Tubes $5.50 ea. 2 for f 10.00 1 HS-30 Headsets with Headband & Imped- ance Matching Xfmr. Works on hi/lo imped.
$1.59 ...........................................................
SSB Versatile Min- iature Transform- 3 BPI-3" Cathode-Ray Tube with Socket-
New-R/E .............................. Both for $1.50 er-Sane as used in W2EWL SSB rig - March '56 QST. 3 sets of C.T. windings for a combination of impedances: 600 O h m s , 5 2 0 0 O h m s , 2 2 0 0 0 ohms. (By iising the center taps the imped~nces
AN-9000 UHF Antenna Assembly-Type AS-32lAPXI weatherproof yellow finish. Antenna height 1 by4" ................p rice $1.00
Silicon Rectifier-500 Ma.-130 V. (RMS) Special .............................................. 7W
Barry's Green Sheet 25#-(Chock full o f Ham and Industrial electronic components, equipment and electronic tubes). Has prices for tubes, semi-conductors, tube car- tons. ALL at sensible prices with Barry guarantee (cost o f mdse only). $5.00 mini- mum order. Mdse subiect to prior sale. INDUSTRIAL INQUIRIES INVITED. Fac- tory authorwed distributors for Westing- house tubes and semiconductors.
CR-I Snooperscope Tube-Unused wlspecs. ......................................................... ..$2.50
BC-457A (4 to 5.3 Mcs.) XMTR used $4.95
BC-458A (5.3 to 7 Mcs.) XMTR used $4.95 are quartrred.) The ideal irans-
litter. Other IIWF. I" Round-4.200 mlrroamps, M f d by Int I. Inst. $2.95
former for a SS8 trar .......
interstage, fransistor, phone patch, line to grid or late, impedance choke, etc. Size only 2" H x ?/4" W. x 3/4 d. Brand new-fully shielded i n original cartons. Weigllt: 21/2 ounces. 9% each, 3 for $2.50, 10 for $7.50.
Mallory Inductuner-Unused. This famous device i s an excellent VHF front-end t i l ler suitable fcr TV, FM, HamIComm'l revrs. etc. Brand new, unused. Tunes from 55 thru
........................................... 220 mcs. $2.95
Westinghouse Scope Transformer-Pri: 1 15 VAC @ 60 CPS (16.5 VA.) Sec: 2.5 Volts @ 3 Amps. Sec: 3890 V. @ ,0023 Amps. Brand New. Weight: 9 Ibs. .... . . . . . . . . $ 3.95 Glas-Line Non-Metallic Guy Line-(elimin-
ates need for glass (break-up" ,' Strong, weather resistant, p ast~c Insulatorj coate spun glass fibers form a high tensile strength (9 strands) guy cable. Ideally suited for the heaviest amateur antenna in use today. Ex- tensively used in commercial servlce too. Guaranteed not to rot, rust, or deteriorate for five years or more. Packed in 60G ft. reels, but sold in any multiple of 100 ft. Per 100 feet $2.9&600 foot Roll $17.00.
C. D. Model No. 3414 Heavy-Duty 300 Volts D.C. Output at 335 MA. Vibrator Supply Units are made with the E-est of components and best construction for !ong trouble-free use. Al l units are brand new, packed in original C.D. Jobber-Cartons. Units come complete with TWO CK-1006 Rectifier Tubes and C.D. Vibrator Type 12VFIO. Input: 12.6 VDC. Output: 300 Volts D.C. at 335 Miliampe es. Size: 8-1/> High x 13-y4" Wide x 7-I/,, Deep. Weight:
.......... 28 Ibs. Catalog No. CD-3414 $15.00
FACTORY DISTRIBUTORS FCR NATIONAL,
JOHNSON, B&\V and HAMMARLUND! r Wanted t o Buy: M a w types of unused tubes, semi-conductors and equipment.
UHF Beacon 'Transmitter-
. 31 16 H.P. Contin- uous Duty Motor- MFD. by Russell Electric. 1 15 VDC. at 1.8 Amps. tem- perature rise: 40" C. - 3450 R.P.M.
Dimensions: Overall height: 61/4". Diameter 5". Shipping weight: 30 Ibs. Brsnd new in original cartons. Very special price . $4.95
New! Super-Test Glass-Line-(1,000 1:s. tensile strength-1 8 strands.) Sold in 600 f :. rolls. 100 ft. $5.56531.54 per 600 ft. roll.
A C Voltmeter-0 to 250 VAC. Fall-scale Round. 1 17 volt point marked in red
to show normal voltage. Mfd for Stancor. ...................................................... $1.75
BC-603 Power Supply-Completely wired, ready to operate. For the popular BC-603 receivers. Has exact connector. I I 5 VAC
.......................... 60 CPS operation. ..$9.95
A C Voltmeter-4 to 250 VAC. Full-rare' 2\/2" round. 220 volt marked in red to show normal voltage. Mfd for Stancor. ........................... I .75
Qua* Crystals, Type FT-243-ln.seies of 120 pieces per set from 5675 KC to 8650 KC. Ten sets per wood case. .35 e.rch. ($30.00 per set of 120 pcs.)
.. CK-722 .............................. e.. .85#
I Other Transistors and Diodes in stock. I
I B&W MINI-DUCTORS STOCKED ]
Sontone Rechargeable Battery Cartridge- ................................ Model FC-2 ..$7.95
Johnson Citizen's Band Messenger-1 2 VDCI 1 15 VAC.' . . . . . . . . . . . . . . . $1 39.75 each
Hammarlund Super- Pro Power Transformer -Manufactured by Chicago Transformer -u.-BedL 'iful heavy- duty construction. Her- metically ealed Pri: 115 or 230 volts at 60 cps. Sec: 4 5-0-435 at I60 Ma. I M.S. (Bias
Tap: 3 15 volts at l l Ma.) Filarlent secon- daries: ( I ) 6.3 volts at 7 amps. (2) 5.0 volts at 2 amps. (3) 5.0 volts at 3 amps. Dimensions: 7" h. x 6%" w. (includinq flange , x 61/8" d. Net weight 20v2 Ibs. This transformer i s type used in power supply model RA-94A and i s designated T-3. Unused. Special Price $4.50
Compact. Near me- ter band. Converts easily to 2 meters. Uses 121
7
6201's. into sinale ~ k : perex 6360 twin $ode. Size: 4" x 4" x l l . An- tenna is 10-1/'2".
NEW. (Most beautiful ria. Finest warts we have sekn i n years). A real gem, complete with tubes, antenna and case (no book). Price: $ir.75. Battery for above Transmifter furnishes 300 VDC plate and 6.3 VDC filament. Sub- mersible type . . . . . . . . . . . . . . . . . . . . . . . . . . . $4.95
Relay Rack Penel-83/4" x 19. Beautiful comm'l grey steel. ................. each 904
Come in and browse. Wd'are open Saturdays from 9 3 0 am to 3 pm. Subways: BMT (local] to Prince St. Walk I block to Spring Y. IRT Lex. (local) to Spring St. Bus: Broadway # 6 Bus to Spring St. Car: W e are 4 blocks North (uptown) of Canal St. Parking allowul on Broadway on Seturdat.
. , FTR Tralirformer "Little Gem" Special Transmitting & Special Purpose Tubes: 3B29 @ $3.00: 4-125A @ $29.00; 4-250A @ $38.00: 4X150A @ $7.00: 4X250B @ 35.00: RKR-72 @ 1% HF-iOO @ $8.00; 204A @ $12.00; 3008 @ $5.50: . 404A15647 @ $6.00; 807 @ $1.15; 8 1 1 @ $3.25: 830B @ 5W; 837 @ $1.00: 838 63 $1.00: 884 @ 9W: 5654 @ $1.75: 8 0 f i @ $3.00 Many uilters. Largest diversified tube stock in country. Write for Specisl purpose & xmtg tube catalog (free).
-Pri: 19,000 Ohms. Sec: 600 Ohms 1 % " x 1 1 / 8 " x 2" high. Hermetically sea ed. Brand new, original boxed. Mfd., by Federal Tel. & Radio. Ultra compact All prices F.O.B. N.Y.C. Specify method of shipment.
All marchandire insured and guaranteed for cost of mdse only. Receiving tubes guaranteed 90 day- Special purpose & Xmtg. tubes and equipment guar- anteed 30 days. Mort test equipment in good, used condition.
construction. Weiaht lecs than 2 ozs. Ideal for use as plate to fine or line to grid, phone patch and telephone uses. De- signed for audio use in range from 250 to 2500 CPS. Catalog No. GH-1202. Price 494 each. (Lots of 10 35+ ea.)
I 512 BROADWAY (NEAR SPRING ST.), DEPT. S-S 1 . ~ m m m ~ - m - - - ~ ~ - m m m New Yo~k 12, N. Y. WAlker 5-7000 m ~ m r n r v a r ~ ~ = = r ~ m ~ r