irish arrl rsgb practice paper pp1v4all

7/28/2019 Irish ARRL RSGB Practice Paper PP1v4All

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QADV Practice Paper 1for the RCF Advanced Level Exam inRadio CommunicationsVersion 4This exam consists of a single paper with 52 questionsYou will need a copy of the Licencebandplans for 2m and 20mformula sheetcalsulatorblue or black pensTry to set aside 2 hours when you will not be distracted byphone calls, pets, children, cups of tea.Before you begin, visit the loo.For each question, put a tick in the [ ] alongside the correct answer.Make sure your tick does nat cover two boxes.If you change your mind, scribble over the box with the first tick;then tick the correct box.Any calculations can be done on the back of this question paper.I Go through the whole FE*r,

answering all the questi**s you are sure of.2 Go through the paper a seccnd time.Thi*k about each remaining question and answer it if you can.3 Go through the paper a third time.For each question that is still unanswered,ellmi*ate any options that you know are wrong;then rnake an intelligent guess at the correct answer.Each question carries one mark.Ftarks are not deducted for wrong answers.S* do not leave any q$estions unanswered.4 Check y**r calculations.5 Look over your answers until tirne is up.Start time Duration 2 hours End time

Sources of the reference material needed for the Exarn (Licence,bandplans, formulas) can be found athttp ;l/freespace.virg i n. netlmuray. g 3kzbThis website also gives details of other Practice Papers.G3KZB S 2012 QADVPP1 Version4


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The Regional Secondary Locator in the callsignGM8KZB indicates that the Radio Equipment isbeing used inA t I The Isle of ManB t I ScotlandC t I EnglandD l l GuernseyThe Salvation Army and the WRVS are amongthe organisations designated by the Licence asA t I VoluntaryBodiesB t I AuxiliaryAgenciesC t 1 Relief OperationsD t I UserServicesA persc* an a Rmgnised Foundation TrainingCource is perrritted to aperate the RadioEquipr*e*t cf a Fu*i Ucence holder,provided that* t ] tfn Liw*sre ho{ds the microphoneB [ ] * r-r:eximrlnr po$rer of 5OW (17dBW)is emp{oyed{ t } S traf}sr*lssion lasts no longer than5 minutes* I ] the Licensee has direct supervision IlYhat is needed before installing RadioEquipment in a Vessel?A t I A certificate of insurance for theRadio Equipment.B t I The written permission of theVessel's master.C i I Type approval of the RadioEquipment from HM Revenue andCustoms. ,3D t I Notification to Ofcom of the name oFthe Vessel.

,,

CEPT Rec*mmendation T/R 61-01 relates toradio amateurs who areA I I temporary visitors to another8i countryI operating /MM on a Vessel notregistered in the UK

I permanently resident abroad] retaying fttessages via amateursatellits

Shi{fr af ttreidlcxing conditions apply tornessages sent by Radio Amateurs?{1} I?ry rnust *et *e of a menacing character.{2} lhey nnrst nst be grossly oftensive,{3} They. mrlst not be indecent or obscene.A t I (1) and (2) only.I { I (1} and (3} cn}y.C [ I {2} and {3} onty.D{}&}.1threecfthem.The Licence recornmends that any*mmunication links to remotely controlled*adio Equipment should use bands above

{[*[

A I I 3oMHzB { j 100[,tHz

A I I Syears CB I I lOyears D

C t I 200MHzo t I 4aout1'z

I 15 years] 20 years

A permanent record (log) of the operationof Radio Equipment must be keptA t ] duringacontest3 t ] when funciioning as a beac*nC t ] at the requst *f a Frxnauthorised by OfcomD t I if operating Maritime Mobite ininternational watersOfcom may revoke the L*c*rrce if the Licenseedoes not confirm that the relevant details arestill correct after a lap* of

tt

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1O On which one of the following frequencies isa Full Licence holder permitted to use400w (26 dBw)?A t I 1.86MHzB I I 51.45MH2

t*fhat ie tf*e inductive reactance of an inductorof 1S misehenries at a frequency of 25MHz?[Take p{ as 3"14]A [ ] 1464ohms.B { } 1570ohms.C ,il 3 1576 ohms.D,[ ] l782ohms,

lfftrich one of these grapfls shows theinnpedance of a patatlel resonant circuit?A i I GraphA,3 t I GraphB.C t I GraphC.D t I GraphD,

1? Why are the iron laminat*or*s in a rnainstransformer coated with v"amish?A I I To isolate the primary andsecondary windi*gs.

, S { } To increase the ?er$,}e*}itity.C t I To minimise corrosion.D { ] To prevent eddy cxrrents.

15

C i I 70.20MH2D t ] 145.0MH2

11 A Power Supply U*it has an ElttF *f S*$.OV.When 15A is drawn fror* it, the PS betv*eeaits terminals falls to 486.5V.The source resistance of the PSU is

L2

A t I o.sf,B I I o.6n

c t I 0.eaD I I 1.2Q

A capacitor is formed of 2 parallel plates.What should be done to make thecapacita*e four times as large?A I ] Double the area of the pfates anddouble the distance between them.B t I Double the area of the plates andhalve the distance between them.C t I Halve the area of the plates anddouble the distance between them.D I I Halve the area of the plates andhalve the distance between them.Which one of the following actions willincrease the inductance of an inductor?A I I Removing the ferrite core.B t I Making the diameter of the coilsmaller,C I ] Addi*g te the number of turns onthe coil.D t I Increasing the spacing betweenthe turns.An alternating current in the form of a si*eWhat is its RMS yalue?AtlLTv. ctllev.BIl18v. D[]20v.

13

14

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218

Which of these circuiG matches the graph?A I I CircuitA.B t I CircuitB.C i I CircuitC.D t I CircuitD.

19 Oscillator circuits are built with a combinatiortrof components with negative and positivetemperature coefficients in order toA I I maintain oscillation aeross a widefrequency rangeB i j obtain maximum frequencrystabilityC t I minimise the current drawn bythe oscillatorD I j stabitize the circulating current

ZO If the p-n junction of a transistor is reversebiased, thenA I I the depletion layer widens andno current flowsB I ] the depletion layer widens andcurrent flowsC t I the depletion layer narrows andno current flows iD t ] the depletion layer narrows andcurrent flows

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Whish o*e ef the fotlowing would be thebest choice as the input of an electronicvoltrneter?A i I pnptransistor.B t I npntra*sistor.cllrEr.D I I trisdsvafve.*tm*grcuit(1) E-

Cirtuit {2}Which of these rectifier circuits would givea half-wave output?A t I Neither of them.B I I Circuit (1) only.C t I Cfrcuit (2) onfy.D t I Both of them.In a receiver employing direct digitalsynthesis, what is the effect ofincreasing the number of digits in thesynthesiser?A I I More current will be draw* fromthe power supply.B I I The purity of the signal will beimproved.C t I The bandwidth of the signal willincrease.D t I It will take less time to changefrom transmit to receive andvice versa-

# .-,1--rjCircuit D

iltCircuit C

:r-Iircuit A 22

23

Circuit ts


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24 Why are frequency multipliers biasedin Class C?A t ] To geaerate harmorics.B I ] To reduce distortion.C i ] To minimise the current.D t I To stabilize the &quency.

25 What are the relative bandwidths of thesemodes of modulation?narrowest broadest

Atl AM SSB FMB ['J SSB FM AMctl rlir AM ssBDI] ssB AM FM

26 Which of the following modes of modulationrequire a power amplifier to be linear?A t I CWand FM.B t I AM and SSB.c i I AMandCW.D t I SSB and FM,

27 'Key clicks'on a CW transmission arecaused byA t I an unstabilized power supplyI t I se{ective refractions from theionosphereC t I the carrier rising and falling toorapidlyD I ] sending the Morse at too manywords per minute

28 Unplanned resonances in a amp[ifier canresult inA I j intermodulationB I I frequencydriftC t ] excessivebandwidthD I I parasiticoscillation

3* :f tfr ph* *okd focp in a frequencysynthesiser faik to tock, thenA I I tk frqtx*ry display witt fiashB t ] @'*itlbe,iloousutC I I the carr*e.r urii$ be {lfi-n?*dtr*atedD I I the fieqtm:cy$-t$t* transr"*Issioarritl dri*

3{} The lesr*l af tft* h*s eoming out of areceiveds loudspeaker when no signalis present is known as itsA t ] intermodulationproductB t I selectivityC I I noisefloorD I I cut-offpoint

tFjhat sort of reeilrer has this block diagram?A t ] tuned radio frequenry (TRF)B t I (single)supertetC I I doublesuperhetD t I direct digital synthesisPPlpageS


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32 The overall sensitivity of a receiver dependson the sensitivity of itsA I I R.FstageB t I localosciltatorC t I mixerD t I lFstage(s)A receiver tuned to 145.5 MHz has an IF of45'0 MHz. What are the two possiblefrequencies of the local oscillator?A I I 90.5 and 135.5 MHzB I I 100'5 and 190.5 MHzC t I 1rS,5 and 235-5 t4HzD I I 12O-5. and 291.5 MHz

What mde of transmission is this circ*itdesigrdrte demodulate?AIjcu,s{I&!{c{lssaDIJfi

Box Z contains aA I I transverterB t I high-passfilterC t j balunD t I antenna matching unit

36 What is the approximate length of a halfwavelength of coaxial cable with solidpolythene dielectric at 29.0 MHz?A I I 3'5metresB I I4-SmetresC t I6.8metresD I I 9'Smetres

37 When cutting as antenna to size, rxhatis the'end factor ccrrection" that has tobe applied to the free space l*ngth?

33

A t I x0.65B t I xo.75

c t I x0.85D t I x0.95

3A A guad a*tenna is constructed in the formof a squ*r:. l#hat fraEtion of a wavelengthis the l*ngEtr gf eac* side of the square?A t IoneeighthB I l onequarterC t I onethirdD t I onehalf

33 Which of the following formula relating toReturn Loss at a transmitter is correct?A t I (Feederloss)+ {Return Loss at antenna)3 t J (Return Loss at antenna)- {Feder Loss)C t I 2x(Feedert-o'ss)+ (Retum l-Ess at antenna)D t I (ReturnLosatantenna)- 2x(Feeder Loss)

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40 .*:r *-'g*.,7Circuit A Circuit B

Circuit C Circuit DlYhich a*e of tllese Antenna Tuning Unitshas a pi circuit?A I I CircuitA.B I I CircuitB.C { I Cfr:cuitc,D i I CircuitD.

41 What sort of communieation uses a helicalantenna?A t I Shortskip.B I j Satellite.C t I Repeater.D I j Tropospheric,

42 Signals prqpagated by a single refractionfrom the E layer of the ionosphere maybe heard up to a distance of aboutA t I Z000kmB I I 4000kmC t I Boo0kmD t I 120o0km

43 At what time during a 24 hour period isthe D layer of the ionosphere likely to bemost strongly ionised?A t I Mfctnigt1t.B t I Daybreak.C I I N**n.D t I Sunset-

44 10.7 F,tl{z ard 4S5 kHz are frequenciescommonly used forA t I pagsrsB t ] radio c*sttrcltd rn*delsC t I beaccrs fur Wp*at*"n rcsearcbD t I IFs of dor*st*c {e{e*Yers

45 Whiitl nrede af r:rodula&i.an +f radi* amateursignals is laast tikely to cause cross-modulation in other devices?AllcwB[]AM

c[]ssBDtIrM

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46 The proper name for the'rusty bolteffect'isA I I blockingB I j overtoadingC { I coffimon rnod* i*teferenceD I I Fassi\relnterrlsdnlatic*

47 The special type of 'voltage depende*t'resistors found in mains filtersA t I stabilize the output ts ?3SVB t ] cut off spikes of high votrtageC t I set a maximum value of current

through the filterD t I present a low impedance to theincoming 50Hz


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48 The simplest way to increase the 52 Which one of t}1e fellowing could be theinductance of a wire is to callsign of a ffiai$bex?A t I connectaceramiccapacitor A t ] GB3KU&between it and earth B t I GBsrsB.B I I applyahighervoltage c t ] ffi?KEB.C t I increase its diameter D t I Gffir{ES.D t I clip a split ferrite ring over it

49 An antenna is radiating a power of17dBW (50W). What is the fieldstrength at a distance of lkm fromthe antenna?A t I 0'05 volts per metre.B t I 0.7O volts per metre.C t I O.98 volts per metre.D t ] 1.37 volts per metre.

50 A possible cause of EMC problems in arrunbalanced system that does not arisewith a balanced system isA t ] ahighSWRB I ] the radiation of harmonicsC t I RF curent on the coax outerD t I the generation of unwantedmixer prcducB

51 On receiving a complaint aboutinterfercnce to a nearby radio. the firstthing a radio amateur should do isA t I fit a ferrite ring on the mainslead of the radioB t I sit down and talk it through withthe neighbourC t I find out if the radio is underguaranteeD t I consult the Ofcom websitewww.0fcom.org.uk pp*ageg

33 Ylatlid: cf Ure folf*wing statemer:ts isfaeetrse ab6ut {TCSS in connection witkrepeaters?(1) continuotrs during access{2}'k*trtr atdio @uencies* t 3 Ystatementistrue.B [ ] &r4r seabrxrent {1} is true.C t ] $*Iy stattment {2} is trs*,D I ] Both statenrents arc true.

5{ Which one of the following types *fstation always requires a particularcallsign issued specifically for theoccasion?A t I Clubstation.B t I Special event station.C t I Talk-in station for a rally.D t I Sarsw$mtbn s&aticn at a fete.

55 fr* wfuich **s of k f,stlffiir*g bands docontests take place?A t I 7t4tz(40m).B I I 1CIf,ttlz{30m}.C t I 18MHz(17m).Dtl24t4tlz(12m).


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All the following safety precautions are 60important.Which one is the most important?A i I Earth leakage trip.B t I LED or neon warning lights.C t I Double-pole master switch.D I I Cables of adequate currentcarrying capacity. 61

37 Reference Levels recommending maximumsafe levels of exposure to RF radiation foreach of the amateur bands are published byA t j OfcomBTIRSGBC t I Health Protection AgencyD t I Health and Safety Executive

Eg The interior of a commercial static dischargedevice containsA I ] inertgasB t j avacuurnC t l carbcndioxideD t ] compressed dry air

59 To measure a large current with a movingcoil meterA t I connect a high value resistsrin parallel with itB I I connect a low value resistorin parallel with itC I ] connect a high value resistorin series with itD t I connect a low value resistorin series with it

Which one of the following would give theleast accurate measure of frequency?A t I Crystal callilrator.B t I HeterodynewaYs$ltr.C t ] Digital frequency co{.lnter.D t ] Absorptfon'wavemeter.

The ve*isaf amplifier in this oec**I*swpe is setto 200mV per division. What is thepeak-t*-peak voltage of the wavef*r* shatrn?

62 Why measure SWR?A I j To check the bandwidth of atransmission.

AIJS"AYts[]CI-4v

Dl

c[]0'5vD[]0.8v

BTci J To prevent over-modulation.J To measure the output from atransmitter.I To monitcr the match on afeeder,

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31C6432A623385334D6735A7036A7477D753887639C7340D79

1882D83D4 B 75A76DB7A98C89A910D10

4LB42443C44D45D46D4784AD49A50c51 B52C53D54855A56C57C58A59850D

2685227C5928 D 57,5829 84830 c62

QADV Practice Paper 1 t(eyAdvance! The Full Licence ManualSyllabusI Licence

Za.t Clause 2(2)2b.1 Clause 17(qq)Zc.L Clause 3(3)2d.1 Clause 9(4)2e.1 Clause 16(Uzt.L Note (h)29.1 Note (g)2h.1 Clause 12(1)2i.1 Clause 6(3)Zj.L Schedule Table C

C 22,23 3a.LA 24,25 3e.1c 26 3f.2A 27,28 39.1B 29 3h.13i.z3j.33k.13m.13n.1

21 C 4L,97 3n.622 A 35,36 3p.123 B 48 4c.L24 A 49 4d.125 D 44-46 4f.249.14h.24h.44h.64j.3

4k.141.14m.140.14q.15a.15c.15c.45d,35e.1

11t213t41516 C 30,31L7 D3218 A911983320A34

B0 6a.181 6b"281 6b.690 7a.L89 7a.290 7a.592,93 7b.L91 7b.386 7c.t71,72 7d.79s 7f .111 8a.1L2 8b.113 8d.113 8e,1L4 9a.116 9d.1L7 9e.196 10a.199-101 10b.1

61 D le862 D 73 1$c"Ll$e.1

QADVPP1 Version 4

irish arrl rsgb practice paper pp1v4all

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