Horne

*

MASTER INDEX _ ISSUES 1 TO 62References 10 C1, C2, C3 and C4 indicate photographs appearing on the

Fronl cover, Inside iront cover, lnside back cover and Oulside back cover, respectively

ISSUE PAGE CD VOL

Canrtast tre

*PAGE CD VOL

AERONAUTICALAirship by Slan CrabtreeBirth of Airborne Wireless by Tim WanderFirst Airborne Radio Telephony by David PritchardRadio Goes to Wa, by Chas E. MillerSaved by Fladio

LetterRAF Feceiver R.1084Consol by Brian KendalConverting the T.F1"1196 RX by lan HickmanGee by S.W PopeSaved by Radio - 2 by Louis MeulsteeTransmitter/Receiver T.R.9 by E. E Jone€RAF Aeronautical Transmitter T.21 by Ron lrvingBAF Tester RlT, Type 1 by F. F JonesRAF Transmitter/Recoiver T.R.2 by Ran livingWireless in the Royal Flying Corps by'PhospholBendix MN-26 Radio Compass by Jahn C. MackesyRAF Receiver R.1082 by E. F- JonesBOAC Dakolas jn World War ll by Larry CoalslonIFF - ldentificalion Friend or Foe by lan c. MantRAF Transmitter T.1087 by E. E JonesGetiing the T.1154 & R.1155 together by A. H. Cain

LetlerLetle!'

T.1154/8.1155 Spotters' guide by Max WestleyRAF transmitter T.7O by E. E JonesReminiscences of a Flight Badio Oflicer by G. HoltumTuning lor perfection (R.1155 dial)

LetierFAF Transmitter T.77 by E. E JonesBebuilding an Fi.1155 by Dave KemplenVHF communicalions al HAE 1937-1942

by E. B CallickPart 1

Pafi 2Festoring the R.1116 by T. R. SandersonAircraft Radio, a briel history by Stephen Pope

Part 1: 1899-1939Part 2: World War ll onwards

AMATEURAlbert Pearce and the Wireless by E C. JuddSlereo via Amateur Radio by F C. JuddVintage Years of Amateur Wireless by Slan Crabtree

Part 1

Part 2Pad 3Part 4Part 5

Collins S-Line by Peter A. HopwoodVintage Years of Amateur Wireless by Sfan Crcbtree

Part 6Pad 7Part 8

Hammarlund'Comet Pro'lvods to lhe Collins R-390A by Don MartinWireless History Unearthed by Jack HumExperimeniation in 1913Heathkit Receiver Mode! BA-1 by Richard MarisCodar AT5 Transmitter by lan Listen-Smith

Lafayette HE-30 revived by T. S. ChristianThose were the days (1 938 licence)

AUDIOAmplifier for 78rpm Records by Chas E. MillerDynamic Range vs Ambieni NoiseHistory ol Magnetic Recording by F C. JuddSiereo via Amateur Radio by F C. JuddCollins S-Line by Peter A. HopwoodVintage Years of Amateur Wireless by Slan Crabtree

Pad 6Pad 7Part 8

Alan Douglas Remembers ... 1920-1 9?6Early Microphones by Alan DouglasThe l\.4echanical Amplifier of S. G. Brown

by Anthony Swi{tThe Theremin by Peter LankshearHorn Loudspeakers of S. G. Btown by lan L. SandersMagnelic Recording Machines by 9ob RidleySound reproduction, 1930s lo CD by Laffy CoalstonGarrard memories by Dennis Goacher

LetterTwenties loudspeakers, beginners' guide

by Derek JaquesDomeslic portable record players by Anthony Green

Let16rLelter

QUAD Mods by Barry FalconGrundig TKs Tape Recorder by Nicholas ColemanLoftin-White amplitier by Peter Lankshear

BOOKSClassic Book Review by Eichard Q. Marils

Everymans Wireless (F. J. Camm)Golden Classics ol Yestetyear {D. lflgram)

New Books:

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Amateur Radio in the UK and GreeceBadios - lhe Golden AgeVibroplex Collector's GuideWhat s on the Wireless

70 Years of Radio Tubes & ValvesAmateur Radio for BeginnersBright Sparks of WirelessFrom Rattle to RadioMore Golden Age of RadioOTC

Radios von Gestern

Saga of the Vacuum TubeThe SetmakersWhat the Ovaltineys SangClassic Book Review by Richard Q. Marris

Radio SeNicing (Patchett & Fozzard)ARRL Handbook

G u ida de I R adiocollezion istaHet Racal HandboekKeys, Keys, KeysRadio ArlRadio Arl PostcardsClassic Book Review by Richard Q. Manis

Admiralty Handbook of Wireless TelegraphyFIB Bookshell

Classic Book Review by Richard Q. MafisE leclronics Circuils M an u al

Discovering Vinlage BadioHistory of lhe British Radio Valve to 1940Le Radio PopolariComprehensive Radio Valve GuidesEarly History ol Hadio from Faraday to MarconiHandbook of Radio, TV & lnduslrial & Transmilting

Tube & Valve EquivalenisEarly Radio - in Marconi's Foolsteps 1894-1920Classic Book Beview b/ Richard Maris

Radio Desigfier's HandbookAudiol Audio!Bakelite BadiosElectronic and Radio EngineeringHi6tory oi Thermionic DevicesSaga oi the Vacuum TubeSavoy HillSinclair ArcheologyTransmitters, Exciters & Power AmplifiersValve AmplifiersWake of the WirelessmanWalchers o, the WavesW,reless for the Warrior - VolurPe lWires. Wheels and WingsClassic book teview by Richard Q. Maris

Radio Engineering/I\4easurements in Badio EngineeringLelter

'Q41 and Beyond' - story o.f a Wren TelegraphislA bit of a bind by T. S. ChristianMilitary Surplus in JapanR-390/R-3904 Handbook (ltalian)Radio Gear in East Germany/BussiaBad,o! Radio! (3rd Edn)Rad,os by HallicraftersSparks Around the BridgeBakelite SlyleFrom lnternational Walers.

60 years of offshore broadcastrngGerman Radio Communication Equipmenl up to 1945Guglielmo Marconi in LondonProspero's Wireless, P P Eckersley biographyShonwave Fleceivers Past & Presenl (3rd Edn)Old TelevisionAWA RadiolettesBuying a Used Shortwave BeceiverEleclronic Classics - Collecling. restoration & repairGolden Age ot Radio in the HomeMagic of SonyRadio Designer's HandbookRapid Badio Repair (standard superhets)

BBOADCASTINGBBC Network 3 Programme 'Sound' by F C. JuddFirst Ladies oi Pirale Fladio by A. LesterRandsGerald l\4arcuse (G)ZNM by Pat HawkerHague Concerts lrom PCGG by Pat HawkerHCJB, Voice of the Andes by Andrew SteeleSounding History (BBC World Service)Time-warped T(ansmilter by WJtu|Start ot Wireless Broadcasting in ihe UK by E C. JuddBiggest Aspidislra in the World by Pat Hawker2LO London Calling by Ron lrvingFirst Badio Broadcast, Christmas 19OO by W. S. Marceillnternational Broadcasting - Bidh of a Monster?by Pat Hawker

Part 1 - Short-wave Lislening in the 1930sPart 2 - Broadcasting in the 1930s and'40s

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Memories of a High-power Mobile Transmitter by WJMBBC TV SlLrdio Operations and Engrneenng

by Larry CoalstonGermany Calling by Andrew Emmercon

LetterDutch lnternational Broadcasting by Dick W. RollemaEnglish broadcasls from Europe by Norman BuftonThe listening ear (BBC Tatsfield)Pirate radio broadcasting pre-Wwll by P (Ben) BennettWallace Maton, radio relay ptoneer by Pam WhittingtonBBC Westminster colour studio 1972

by Larry CoalstonCatastrophe transmitters by Alan DaviesFM Radio faces the digital threat by Pat Hawker

1. Developments up to WWll2. Return to peace

Showing films on BBC TV by Laffy CoalstonWe never closedl (History of AP) by F J. A. GrayThe Last Survivor? (Baldwin mike) by Graeme Wormald

CARTOONSHerilage TrailPractising for RetirementTwo-way WorkingVery much a valve man

CIRCUITBYAmpiifier for 78rpm Records by Chas E. MilletN,,lighty HRO by Peter A. HopwoodReaction by lan HickmanYesterday's Cicuils by Gordon J. King

No. 1 Volume ExpansionNo. 2 BandspreadingNo. 3 Bandspreading/Magic EyesNo. 4 Automatic Volume Control

Coming o, the Superhet by Larin KnightPart 1

?afi 2E52 'Koln' Receiver by Neil ClyneHow to Buiid a 2-valve SetHT SLrpply by Richard Q. Marris

LetterYesierdays Cicuils by Gordon J. King

No.5-AMDelectorsNo. 6 - Battery Economy Circuits

American 'Midgels' by Richard Q. MarrisConverting the T.R.1196 Receiver by lan Hickman

LetterFessenden Faux Pas by Stan Crabtree

LetterHammarlund 'Comel Pro'

'nside the Eddystone 8884 by Brian Kendal

Early Negative Besis'lance Valves by lan L. SandersThe Magnelic Detector

LetterThe Philips Superinductance Receivers by Lorin Knight

CorrectionsUpdate

Some Unusual Vintage Transistor Circuitsby Sir Douglas Hall

LetterLetter

The Unidyne by lan L. SandercLetter

Racal and the fiA.17 HF Communications Receiverby Keith R. Thrower

Part 1

Pad 2SuperEegeneration Revisited by T S. ChristianCheck Your Batter,es by Jell HarrisCryslal Sels by C. M. LindarsGetting io Grips With ACIDC by Gordon H. BrownIvlains PSU for Battery Sets by 8en Neckl\ilarconi CR Series of Receiver by G. L. GrisdaleIvliser's AC Power Unit by'Home-Brewer'Pye PCR 2 by Ben NeckSimple 60Vi120V Power Supply by A. R. HobdenSmall Yanks and Class'X' by Ed DinningStenode Beceive( by Larin KniohtThe 'Biflexet' by Sir Douglas HailEddystone 73014 rcceiver by Ben NockGetting ihe mosi from crysial gates by T. S. Christian

LettersHallicrafters S-38E receiver by Ben NockHeathkit SB-301 receiver by Ben NockIvlodell AQST (East German'HRO') by Neil ClyneThe remarkable Philips Theatretle by Peter LankshearVHF l\,,lonitoring Feceivers {eview by Brian Cannon

LetterWireless communicalions circa 1903 by Anthony SwiftTune-O-Malic (Atwater Kenl 51 1)

CLANDESTINEBiggest Aspidistra in the World by Pat HawkerThe Story of 'OLGA by Erling Langemyr

LetterLeller

Aspi 5. Task Z & Operation 'Silent Minute'by Pat Hawker

Part 1

[,{k.123'Spy Set' by Ben NockPolish Radio Centre, Slanmore by Pat Hawker'Sweetheart' l\4iniature Receiver Type 31/1

by Erling LangemyrAspi 5. Task Z & Operation 'Silent Minule' by Pat Hawker

Pan ?SR 128 transmiiter/receiver by A. J. Wedgvtood

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'Lisbeth' - an illegal Norwegian receiverby Tor Marthinsen and Erling Langemyr

Polish BPS ... if does exisll by Atihur K PollBadio Set RS-6 by Ben Nock

COMMENTChanges to RBEMCHellolMemoriesOur First YearThe Passing ot Radio'Airwaves'Morse Code

LetterSubscription BatesSupply Voltage StandardsValve Numbering DaiaValve TestingLearn from Pasl TechnologyRadio 3 MW Close-downSubscriptions lo EuropeThe Legacy of F. C. JuddUnlucky for SomeRestoration MethodsBeginning RB's Fourth YearCircuit Diagram ConventionsClassifying TRF Receivers

LetterConstructional Adicles in RBSafety

LetterLetter

Serving the ReadershipD-Day CommemorationsBecording HistorySlr Douglas HallUbiquitous 807VAT on Newspapers, l\4agazines and BooksWhat Are They Worlh?DencoEF50s in German Equipmenl

LetterGB2SM al the Science Museum ClosingPaper Price RisesBeminiscences of WWllRenewing Your SubscriptionTechn jcal book availabilityThe Morse argumentOfficial records vs. personal recollectionsPoslage ratesSecond-hand valuesWireless {or the WarriorEquipment prices, etcMarconi Archive saleMarconi Archive savedNew features: back issue availabilityPeripheral lopicsBecollectionsCD publicationsMorse test proposals in lhe UK

LetterMuseum(ology). Morse test proposalsRadio museum futureWarrior-z complete. Readers ADs problems50th RB. Warrior-2 delayedBookworm turnsDesign problemsKootwijk radio closingMuseums. Domestic articles wantedMuseums. Readers AdvertsSubscriplion changes for UKNew Publisher... same magazine!Thanks ... no change!

COMMUNICATIONS BECEIVERSHallicrafters S-20'Sky Champion' by gen NockRebuilding an R.1155 by Dave Kemplen

CONSTBUCTIONBattery Eliminaior for Valved Radios by Rod Burman

LetterBias Subjecis by John l. BrownSubstitute Grid Bias Batlery by Ray Holmes

LellerThoughts on Power Supplies by Tony HopwoodHow to Build a 2-valve SetSingle-valve Loudspeaker Receiver by Sir Douglas HallAdding FM to Classic Valved Radios

by'Home-brewer'Breadboard Construction by Richard Q. Marris'Octagon' Aerial by Bichard Q. MarisReceiving Flvl Programmes on MW

by Peter Lankshear'1-V-1 Valved Receiver- PreviewThe 1-V-1 Rides Again by T. S. Christian

Part 1 - Background and CircuitPart 2 - Conslruction, Coils & Power SupplyPart 3 - Driving. Bandspreading, Cosmelics, etc

The'Lowier' Aerial by'Home-brewer'Mains PSU ,or Battery Sels by Ben Nock

Miser's AC Power Unit by'Home-Brewer'Letter

Simple 60V1120V Power Suppiy by A. R. HobdenBuild a'60s Style Transistor Podable

by Sir Douglas Hail

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Leller 62 35 5

FAMOUS NAMESJackson Brothers - A History by T S. Christian

Partl 27 4 3Pafiz 28 7 3

Radiovision (Leiceste4 Ltd by W. W Storer & C. W. Cragg 25 21 3Bush VHF 101 Table Radio 36 21 3Cryslal Sets by C. M. Lindars 3'1 30 3Early KB by Anthony Hopwood 34 22 3George and his Gecophone by John W. Wood 32 16 3MH s-Valve Supersonic Unil by Geoft Arnold 36 4 3Milnes Unil 36 20 3Simple 60V/120V Power Supply by A. R. Hobden 33 11 3Small Yanks and Class 'X' by Ed Dinning 33 3

Lelters 35 33,35 3Sony TR-63 Story by Enrlco Tedeschi 35 30Lissen 'Hi-Q' Short-wave Components of '1936

by W. H. J. YeoLetter

HAC Short Wave Products by C. M. LindarsMemories ol Arthur Allwright and Denco Radio

by Ronnie AllwrightCollecting E. H. Scott radios in Brazil by C. A. Fazano

MAHITIME & NAVALCoast Radio Stations by Bran FaulknerWireless and the ss Trlanic by 4. Lester-RandsFirs'l Use of Radio in l\rarine Emergency by Jeff HanisBadio in RNLI Li{eboats by Brian FaulknerSeagoing Recollections by Frank BaileyA Ship of My Own! by Geoff ArnoldWireless on RMS 'Queen Mary' by Geolf Arnold

LetterFirsl Maritime Distress at a UK Coast Radio Station

by Brian FaulknerThe Magnetic Deteclor

LetterA Myslery TransceiverWireless in the Titanic by Norman Burtonlvlarconi Marine 'Lodestar' ADF by Geoff Arnold1930s Seagoing Memor;es by Les Gibson828 Transmilter UniiSea Battle by Victar GoomEarly wireless .. at home and al sea by Allen FinchNaval Type 67 W/T Set AP W3217 by Phosphor

LetterPost Otlice W5 lransmitler by Brian FaulknerMeasurements of LW propagation by E. F. Jones

Propagat,on changes (letter)Elettra, Marconi's lloating laboratory

by Brian FaulknerMemories of GTTM at Southampton by T. G. Hobbis

MILITABYW;reless Set No. 38 by Lauis MeulsteeWireless Set No. 38. Pad 2 by Louis Meulstee

Let'terContemporaries of the 38 Set by Loul.s MeulsteeThe HRO in the British A(my by Louis MeulsteeCommando Communicalion - No. 46 Set

by Louis MeulsteePart 1

Parl2W;reless Set No. 't8 by Louis Meulstee

Part 1

Marconi Marine'Lodestar' ADF by Geoft Arnold1930s Seagoing Memories by Les Gibson828 Transmitter UnitSea Battle by Victor Goomcontemporaries ot the w.s.18 by Louis MeulsteeHandie-talkie & Walkielalkie by Srian CannonMk.123'Spy Set' by Ben NockMk.123 'Spy Sel' - A ,ollow-upMystery Add-in by Geoff Arnold

LetlerBAF Receiver R)A82 by E. E JonesSussex Tank Recovery by Ron HamWireless Set No. 18 by Louls Meulstee

?afi ?Part 3

Itaiian Field Radio Slation RF4 by Maio GalassoLarkspur by Louis MeulsteeRadione Portable Heceiver R3 and Transmitter B520M

by Richard K6nigLet'ter

GL - Top Sec'el by Stanley LewerOn the back o, an envelope {W517) by Stanley Lewerlnside the WS (Canadian) Na.29 by Ben NockKlFuSpr'd' lransceiver by George Scholtes

LetlerPRC-316 ... an appreciation by Tom HarrisonRAF Transmitter T.77 by E. F JonesRadios of the Rising Sun by Ben NockUKIPFC-316 {A-16) by Pat HawketGerman WWI trench set by Dick W- RollemaHellschreiber by Richard Konig

LetterIFF radio iden'lification systems by Cohn MacKinnonBees Mace CAT (8R21 69) receiver by Ben Nock

LetlerSB 128 transmitter/receiver by A. J. Wedgw,todTCS range transmjtters/receiverc by Ben NockWS (Canadian) No 58 lvk.l"ff by Ben NockMemories ot G7TN,I at Southampton by T. G. HobbisGerman WWll transmitters & receivers by Ben NockJapanese radio equipment of the WWll era

'Colditz'Maggitsiz' Horn Loudspeakerby'Home-Brewel

Tribute io lhe 807 by Graeme WormaldMaking ribbed coil formers by John TyeHome-brew valve tester by G. E M. EngelMains power supply for battery sets

by Michael Mucklow

Simple FII lur\er by Sit Douglas HallLetter

Twin peniode receiver by C. M. Lindars12-voll PSU for small valved sels by Ben NockA 3 x EF50 receiver by C. M. LindarsBack'to square one by C. M. LindarsScottish home-brew in New Zealand

by Peter Lankshear

DOMESTICApparatus we have TestedAVC Problems by John l. BrownContemporaries of the DACSO by Arnold Costainlnlormation Department by Chas E. MillerMurphy Short-wave Specials by Lorin Knight

Part 1

Pafi 2RI 'Airflo' by Eddie PhillipsThe Pye Story by DictronComing oi the Superhet by Lorin Knight

Part 1

?afi 2Marconiphone T26ARadionette Symfoni - 3D by Richard MarrisWafiime Civilian Beceiver by R. WaddinghamDown Memory Lane by Pat BakerEarly Murphy Cabinets by Lorin KnightEvaluating the 3.T.68 \1923) by Richard Q. MarrisThe Philips Superinductance Heceivers by Lorin Knight

CorrectionsThe Pye QPAC Portable Radio by Richard Q. MatrisAnlipodean Ekco - the SW86 by Peter LankshearFilament Power ror Dry Battery Receivers

by'Anodyne'Grandpa's Wireless Sel by' Phosphor'HT Batleries and Accumulators by Frank CorvusMighty RGD 1050C by Anthony HopwoodPilot'Litlle Maeslro' Superhet of 1939

by Richard Q. MarrisBush VHF 101 Table BadioCrystal Sets by C. M. LindarsEarly KB by Anthony HopwoodGeorge and his Gecophone by John W. WoodMH s-Valve Supersonic Un\l by Geoff ArnoldMilnes UnitSimple 60V/1 20V Power Supply by A. R. HobdenSmall Yanks and Class'X' by Ed Dinning

LettersSony T8-63 Slory by Enrico TedeschiA BTH Brou brought back to lite by C. M. Lindars'All lransistor' by Andy HawlettCollecting E. H. Scott radios in Brazil by C. A. FazanoGEC BC-403 VHF FM receiver by Richard Q. MarrisKolster-Brandes 1930 Masterpiece by John W. StokesRestoring a Philco 444 People's Set by B. J. ShanahanStory of an HMV Model 541 by Malcolm George

CorreclionDecca Decola by Malcolm George

LetterJapanese transistor radio mini-history

by Enrico TedeschiJohn J. Dunster & Son Ltd, cabinet manufaclurers

by John W. Dunster and Geoffrey DunsterPye 'Export'lamlly by Richard Q. MarrisReviving a Boberts R 77 by G. E M. EngelTell me, Mr Weller No. 1; lhe Bush TV22Tell me, Mr Weller No. 2; the Pye B18TTelsen 1-V-1 revived by C. M. LindarsDomesiic tape recorders by A. W. GreenEkco of a golden age - the P8289

by Peter LankshearLetlerLetler

Murphy magic by Terry McGoughMurphy Badio, poslwar inspeclion^est

by Lorin KnightPerdio Radio, early recollections by Rod BurmanRadiola 60 resioration by Mike Lemin

LetterTune-O-MaticAnd Tomorrow lhe World by Tony Hatuvood

Part 1 - Eddystone All World TwoLellerPart 2 * Eddystone'Fours'

Anatomy of a wireless lake by Ray WhitcombeDomestic poriable record player by Anthony Green

Lette.Early Sony transistor edios by Enrica TedeschiMore on Sinclair'Micromatic' by Andrew HowlettMurphy 4100 by Lorin KnightPerdio Town & Country .ange by Rod BurmanRejuvenallon of a 1933 Kingsford Console

by Derek JaquesScottish home-brew in New Zealand

by Peter LankshearTelelunken SW receiver T32 by Dick W RollemaAnd Tomorrow the World! by Tony Hatwood

Pad 3 - MiscellanyHMV's Model 471 by John W. Stokes

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Swedish 2 W Br transmilter/receivet by Bengt BrolinUS mililary radio - accessories and parls

by Tony GroganUS mililary equipment designalions by John Keeley

MISCELLANYBackward Stop ror Radio? by Tony HopwoodBaghdad Morse? by G2BZQ

LetterLetter

Coil CorrosioncoCulver Cliff Wireless Station by Tim WanderDays at Pye and Ekco by Raymond W EdwardsEver Been Had? - Dynamic Range vs Ambient NoiseFull Ci.cle by gob WitsonGas-mask Box BeceiverJottings by the Way by Chas E. MillerKeeping the Fun in the hleresi by Dennis LisneyLate News by Barnaby HindsytePhysiological Radio Detectors by Geotfrey WalshQTI Talking NewspaperWireless Fairies by Tony Hopwood1950s Radio/TV lnterference Work by David RudramA Spark ol Nostalgia by Ron lrving

LetterFrinton-on-Sea Wireless School by D. A. J. Wardlnternaiional Polar Year 1932133 by E C. JuddMy Friend GeorgePrecursor of the Semiconduclo( by Jack HumRadio & Space Research trom 1920 by E C. JuddRadiospares Limiled by F. C. JuddWhatever Happened To ...?Wire-/essWireless Tales {rom the Loft by Tony HopwoodBirth & Growth of Pye Radio Ltd by F C. JuddCan You Help? into wanted on AJSDown Memory Lane by Pat BakerFrequency Canlrol by John L BrownHidden Meanings - a piea for informationl\,,larch of Time - the Slide Fule by John l. BrcwnSound AdviceSlarlirg a Colleclicn by Steve HatnsOn Your Bike! by Charles H. LangtonThe'Toner'

LetlerTransformer Mart

Wireless As I Remember by E C. JuddAn Early Wireless Greetings CardConfessions of a Free-lance Technical Journaljst

by Sir Dougtas HattEddystone Safety Lead-in AdverlisementFirst Ever Adverl for a TV ReceiverListening to Home & Overseas Broadcasts

by E. F Jonesl\4r Pimple's Radio Joy & Sorrow

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fi,,lystery pictures (amateur station 1 910i 1921)Letter

Raycraft KitVerging on sacrilegeBit of a bind by T S. ChristianBygones ot 1932 by A. J. ReynoldsGrimeton dinosaur by Peter R. JensenHistory & development of the thermionic valve

by Rod BurmanHome-made wireless telegraphNeither {ish nor lowl by Andy Emmerson'On the road' with Radiospares - 2 by Harry G. Reddin

LetterPhotography for collectors by Geoff ArnoldPhotography for the traveller by Peter R. JensenPirate radio broadcasting prc-WWII by P (Ben) BenneftShori wave radio telecomms in lhe 1920s &'30s

by P. M. HawkinsLetter

Short wave radio telecomms ailer 1945by P M. Hawkins

Tell me ... how did you become interested in wireless?by David Rudram

What did you do in WWll, Daddy?A family business by Tom WinchcombeElettra, lvlarconi's floating laboratory

by Brian FaulknerPerdio Radio, early recoilections by Rod BurmanPolilics of HF radia by S. E BrownSchoolboy beginnings by Joe Fitzge{aldWireless for ihe blind by Graeme WormaldA historical document by Geoff VollerA likely storyl (BBC memo)Brain-leaser (3L0)

LetlerBut whose communications? by'Anodyne'

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Fixed Service Badio in the Netherlands by Louis MeulsteePart 1 56Pafi2 57

'Great Secrel' of WWll (Enigma, elc) by Peter R. JensenParl 1 59Parl 2 60

Hullo Lympne! Croydon calling by Stanley Lewer 57Prof Zepler at Southampton by Beihold G. Bosch 60WWI moniloring station on Shetland 59Do you remember the Selenium Rectifier? by 'Phosphol 61Leeds: Radio Mecca of the Nofih by D. L. Long 62Vintage postcard (RE Aldershot) 61

Letter 62What are the wild waves saying by John Pawer 64What is it? (Mystery box) 61

Letters 62

MOBILEWireless and the Metropoliian Police by E C. Judd 4Wireless Takes to the Road by Tifi Wander

Part 1 1

Part 2 2Part 3 4

Wireless & the Metropolitan Police, a Sequelby E C. Judd 14

Mobile Radio in the Netherlands by Louis Meulslee 29

MODIFICATIONSMods to the Collins R-390A by Don MaftinModi{ications vs. lmprovemenls by'Anodyne'Making ribbed coil formers by John TyeReviving a Roberts R 77 by G. F M. EngelQUAD Mods by Barry Falcon

MUSEUM PIECESChalk Pits MuseumCommunicalions ReceiversDulwich Wireless MuseumJourneaux Historic Wireless CollectionRoyal Signals Museum, BlandiordUK Amaieur EquipmentPeter Cutler ColleclionBeceiversTest Equ;pmentValve CarlonsValvesW:reless NoveltiesBamplon Museum of CommunicationCrystal seis at Arrelon ManorNational Wireless Museum. Arreton ManorReceiver Cabinet Design oJ the early 1930sScottish l\4useum of CommunicationWireless NoveltiesPlastic Radios 1930s-'50sDutch Broadcast Museum

(Nederlands Omroepmuseum)Naval Communications & Radar Museum.

HMS CollingwoodOrpheus Radio Museum, BallaratPat Hill CollectionStichting Signals Collec'tion'40-'45

LetterLetterTelecommunicalions Museum. Adelaide

Cypress Gardens Radio CollectionEastern Bloc Mililary Radio

Nauen - Wireless Link with the lmperial Empireby Stan Crabtree

Philips Electronic Components & Applications -

end o{ an eraRadio Antics by Alan SchillmanReaclion by P P. EckersleyThe Party - a Seasonal Poem by Colln DraperThose Were the Days - Vintage Materials AdvertsTimes Were Hard Then. Ladl

(N/ake your own capacitors)Wanamaker Wireless by Slan CrabtreeWhaiever Happened to the Negative Capacitor?

by'Anodyne'50 Years Ago in Wireless World

But Would it Work With Valves?Driving Classic Valved Communications Receivers

by T. S. Christianlrish Channel Radio-cable Link by E. F. JonesJust How Can You Live Without One?lvlarconi Wireless Station, Waunlawr. Carnarvonl,4icrophone With a StoryThings to ComeWireless in Central Airica by Sir Douglas HallWireless Sets Operated by Gas50 Years Ago in Wireless Worldlmperaal Wireless ChainI Wonder Why by Geofl ArnoldLad who read Wireless SelsListening in the Fifties by Peter ThelwallMarconi Development Labs Staff, 1938Radio Before Hertz and Marconi by Lorin KnightFeceiver Datafile

Eddystone 358/358X14001400x by T. S. Christian50 years ago in Wireless World

Origins of H25LetterSwords inio ploughshares: Television tax

A diflerent nobby by H. HumphflesEdison's radio telegraph by Lorin KnightEleclric wire radioHow'bygone' can you get? by'Anodyne'

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Lindfield Wireless MuseumNational Wireless Museum, Puckpool ParkPlastic-cased BadiosTransmitting ValvesCrystal Sels'On the Air' Museum, Chester'Lisieninq ln' Postcard SeriesTest EquipmenlValvesBroadcast receivers (Pat Hill)Communications receivers and transceivers (misc.)Early receivers, etc. (Journeaux collection)Broadcasl receivers (P E. Savage)Collections in the USAUnusual items and curiosities (misc.)Colourful test equipmenlCryslal deleclorsDon Dean Collection. Sarasota FLFin Stewa.t Collection. San Bemo NSWl\,,larconi Memorial, Needles lowl\.,lelody Farm Music Museum, Wellington NZBognor Regis Wireless MuseumClandestine radio. John Elgar-WhinneyGerman WWll military radio. Ben NockMilitary radio, John Elgar-Whinney'Phosphor' collectionWireless novelties. Bob WarnerComponents lor the 1930s home constructorMiniature receivers aod crystal sets

MUSEUMS & COLLECTIONSDulwich Wireless MuseumJourneaux Historic Wireless CollectionOrkney Wire,ess MuseumHoyal Signals Museum, BlandfordThe Firsl Decade (Chalk Pits)Wireless & Communicalions Archives by Joan HamCollecting Phalips Art8facts in Brazil by C. A. FazanoBadio Bygones Collection in North Yori(shire by G. BakerBad Laasphe by Gerry BakerBamplon [/useumlsle o{ Wight Radio MuseumsResearching the Chakophone by Andrew HumphrissScottish Museum of CommunicalionDutch Broadcast Museum

(Nederlands Omroepmuseum)Naval Communications & Hadar Museum,

HMS CollingwoodSt;chting Signals Collection'40-45Cypress Gardens Radjo Colleclion]ots ... Dashes ... and DialsEastern Bloc Mililary FladioLindlield Wireless MuseumBletchley Park'CHiDE'- Centre for the History oi Defence Electronics'On the Air' Wiretess Museum by Alan GaleMuseum reserve collections by Geoff VollerGerman Radio Museum, BerlinGordon Russell Museum, Broadway, WorcsHack Green Cold War & Radar Bunker MuseumNorwich Aviation Museum

Starting a living collection by Carlos Alberto FazanoWhither radio museology by Dr John BeavisBognor Regis Wireless lvuseum by Eon E. Simpsonlrish Museum of Hadio, Cork

NEWS & EVENTSB & W Coil Stock in ihe UKCasselte SA?kHz - the End is Nigh!Eddystone Users GroupBAOTARB Binders2MT Writile Hut MovedAerial Services Collection. WhitstableAmateur Licence Upgrade (CW Power)82 User GroupBuyers & Sellers DigestBVWSCan You Help? -'Radio Wires'Collins Owners ClubEddystone Users GroupElectric Radio MagazineEmpire Broadcasling at the Chalk PilsHollow State NewsletterlvlcKnight CrystalsMuseo Della Hadiofonia. RomeNorth Walsham 'Sleam Badio' ExhabitionPhilips Change of NameSamuel F. B. Morse lllSound BetrievalSteam Radio Collection, AnstrutherTV BygonesVintage Radio CircleVintage Wireless Co. Ltd CatalogueBampton Museum of CommunicationCrystal sets at Arreton ManorNational Wireless Museum, Arreton ManorReceiver Cabine't Design ot the early 1930sScoltish Museum of CommunicationWireless NoveltiesDutch Broadcasl Museum

(Nederlands Omroepmuseum)Naval Communications & Radar Museum,

HMS CollingwoodOrpheus Badio Museum, BallaratPat Hill Collection

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Plastic Radios 1 930s-'50sStichling Signals Collection'40-'45

LetterLetler

Telecommunications Museum, AdelaideA First Class Job (Murphy)Camden Minialure Sleam Services Book ListCollins Owners ClubDavenlry ClosesDuxlord Radio SocietyFolkestone RAG (G2FA) RevivedHV ElectrolyticsLevell Electronlcsh,,lauritron Military Equipmenl lranualsl\i!useum of Communication FrundationNational Vintage Communicaiions Fair 1993Scottish l\,'luseum of CommunicationScottish I\Iuseum OpensMet Police HF Links Closed1-V-.1 Allernalive ChassisDedham Museum Relocates to HarwichFrench Communications MuseumMilitary Wireless Amateur Badio SocielyMnerva RestorationIruseo Della Radiofonia. Rome

Plug-in Coil FormersOTI Tape MagazineReal Radio (Valves, etc., stocked by Maplin)Samson's Surplus Slores have Moved'Stsam Hadio (Exhibition in Anstruther, Fite)W Graphics ReviewAll Ears FanzineAntique Radio News MagazineComponenl Source - HT transformersCoupling ChokesEddystone User GroupKen-Rad Valve Planl ClosesMarconi Station, Waunfaw( CaernarfonMaur,tron Book CatalogueNew Premises for'0n the Aia'New Source for ValvesPodhcurno Telegraph MuseumRadio JigsawVinlage Wireless Company LimiledWalkie-Talkie - 50 Years Old

LetterWhatever Happened to Luxembourg 208?405-Alive Magazine2N,4T WrittleBletchley ParkDenco Lives AgainlDutch Broadcast MuseumDuxford Radio SocietyGermany CallingHistorical Radio Conlerence

HMS Collingwood Naval l\ruseumIFFJackson Bros ComponentsJapanese UY568Lighthouse RadioMose' Edizioni'On the Ail Museum OpenPortishead Radio - 75 Years of ServiceTechnical Data Sources:

lvlaurilron CatalogueSavoy Hill MoveSavoy Hill Publications

Valve Slockists:Maplin and RS ComponentsValve & Tube Supplies

Bampton newsCHiDE colloquiumCHiDE eventsCHiDE newsCHiDE programme for 1996CHiDE updateClilden relicCommemorative stampsContacting RB authors, etcCouplinq translormerEddystone User Group - new arrangemenlsElectro-JumbleHi-Z headphone lransformerHorsham swapmeetMorse al the watershed?Ongar site redevelopmentValve ListValve sourceVintage Services - change ol ownershipWhilher Morse?Amateur radio demo at Bury Sl EdmundsBespoke sheet mela, worklron dust coresFairchild Semiconductor revivedLasl message irom SAQ Grimelon

l\.,lauritron Dala on CD-ROMMiliiary & Communications Dala Cataloguet\,{ilitary Wireless Amateur Badio SocielyNews from CHiDE

New home for Scoltish N4useumFladio Officers' Association of EuropeSubscriplions from lhe USATV60 at Alexandra Palace

1921

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4

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Two Emma Toc Writtle callinglValve & Tube Supplies StocklistBewarel (overheating batteries)Brusseis telecommunieations exhibitionMarconi lour & book'Out-ol-print' RBsPlug-in coil formersST-1993 special components ending500kHz & l\,'lF Morse closure in UKAntique Electronic Supply catalogueDial cord kitDutch museum for the radio amateurEarly Valves data bookEddystone savedHi-Z headphone adaptorlndex to Radio Valve GuidesLeclure: Fadio before Hertz & N4arconiMains lransformer for battery valve seisMarcon, Collection sateMWABS AM NeIPlug-in coil formersScheveningen radio closes

Spying history series for TVValve manufaclure spreadingVintage & Mililary Amateur RSVintage radio on the NetVintaqe radio on the WebVintaqe test dala at Savoy HillWireless aids airship rescue, 1928Wireless in Wales exhibition

Wires, Wheels & Wings on tapeChelmer Valve Company moveDuncan Neale Collection saleIvlaleslic Translormers rewind seru;cePrittlewell Priory Park radio exhibitionRadio Days maqazine

OBITUARIESAunty Jo (BBC 'Childrens' Hour')Dave Pritchard G4GVOF. C. Judd - an appreciationlvlajorJ. l. G. Brownl\drs Winifred CollinsStan CrabtreeWilliam J. Halliganlvlernories of Stan Crabtree G3OXC by MiKe PaveleyLeon Newnham GONZGordon H. Brown G3FVWPhil SavageProf, B. V. JonesAkio Morita by Enico TedeschiJohn W. Siokes

PEHSONALITIESAlbert Pearce and the Wireless by E C. JuddFirst Wireless Signal (Hertz) by Ken SmithGerald Marcuse (G)2Nlt/ by Pat HawkerHague Concerls irom PCGG by Pat Hawkerl\4ysterious A. J. Alan by Pat HawkerPopov: Hussian Claim to Fame by Stan CrabtreeEarly Days in Australia - W. H. Jenvey

by Norman BufionFrank Murphy. Engineer, elc. by Loin KnightP P Eckersley - the Missed Opportunities

by Pat Hawke{Our Friend G6DN, the Late t\4ark Denny by Ron lrvingJohn ScotaTaggart remembered by Ran GSSYX

Part 1

Pat12Lelier

Wallace Maton, radio relay pioneer by Pam WhitlingtonChristian Hulsmeyer. radar pioneer ol 1904

by Prof. Befthold G. BoschMemories of Cecil Clarabul by GSSYXProf Zepler at Soulhampton by Berthold G. BoschPast perceptive (Noel Coward) ,y Ron

POWEB SUPPLIESBattery Eljminator for Valved Radios by Rod Burman

LetterBias Subjects by Jahn !. BrownSubstitute Grid Bias Ballety by Ray Holmes

LetterThoughts on Power Supplies by Tany HopwoodHT Supply by Richard Q. Marris

Letter

BADIO CONTROLBadio Controlled Models by F C. Judd

Lelter

BADIONAVIGATIONBendix MN-26 Radio Compass by John C. MackesyMarconi Marine 'Lodeslar' ADF by Geoft ArnoldChrisiian Hulsmeyer, radar pioneer ot '1904

by Prol. Berthold G. BoschOrigins ol radar

READERS'LETTERSBabylon RevisitedBaghdad Morse MythologyBattery EliminatorCB3OOCulver CliffDecibels

Decibels (cont'd)GB SubstiluleHV CapacitorsNalional VHF EeceiversNo. 10 SetRX ProtileStopping ihe LeakTerms & TelegraphyTitailicWaves & CansHT Supply by Richard Q. Marris

LetterA Fitting Epitaph?A Satisiied CustomerAn Unlikely Source (EMC)Automated Test EquipmentBaghdad Morse - the SequelCivilian Receiver RestorationE52'Koln' ReceiverFurther lnfoHelp WantedHT SupplyKit selMarine EmergencyMarine Radio 1912More on the 8-3904National Flevisited?Photo Call (AVO)Pioneer Exploits (Perraphone)R-390A Heater BallastR-3904 RestoralionSouthdownSymbols?Turbine lnlerrupter

Versat'le Valve (RV1 2P2000)w.s.19Why Q?

Wire RecordersA Polished ResultAnother BarkerAno'lher WavemeterCrystal Sel fievjsitedFessenden RevisitedFrame Aerials on Long WavesGood Time WirelessHobbies Weekly Circuilslnfo Please! (Barker 88)Long Lived ComponentsMimes UnitMore Crystal Sets[,4ore on PopovOlgaOscillaling CrystalsRMS Queen MaryFadionetle

Saucepan RadioSaucepan SpecialSelective Crystal SeiTelesonic

T.R. 1196The'Toner'Valve DataWartime MemoriesWavemeters1-V-'1s and All That!Another Valve Myth?Cadet Signals RecollectionsCrystal Set DXMore (Dutch) MuseumsEarly TelevisionFringe TV Beception trom APLiquid BarreterLong Delayed EchoesMemories of Scott-TaggartMore on MaggieMore on the AR-88More on the Saucepan SpecialMyslery Valve ldentified (Miniwatl 1821)Pip squeak and the ultimate T.8.9Badio Controlled ModelsBadio Hot Waler BottleRAF T.1083iR.1082, etcRemembering lvlasteradio

Saiety FjrstSaieiy MattersscB-299/sCR-399

Scratch TreatmentSymbolsThe Search lor J. J. ShawThe Unidyne

Valves Made in CantonVintage Transistor Circuits

Westinghouse Radio QueryThe Winds that BlowAdzamAnd'User-Friendliness' Was BornBaynham Honri G5HYBigrid

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4BlattnerphoneBNC ConnectorsCheap HT Baltery Restoration Source?Circuits and EchoesCold Cathodes?CR100 Transmitter UnitHistorical BeconsiructionLizard Jiggered?Ma,ns VoltagesMilltary Nostalgia

Mystery DiF Test Set

Outward SignsPhilips SuperinductancePost-War YearsBacal and lhe HA.71Racal RA.17Receiver ComparisonsB-390A vs RA.1 7LSuper Regen & Vintage T.ansistor CircuitsThrow Away Your AerialslUS Circuit DiagramsUseful Addresses

ValvesWalkie-Talkie Conf usionWave Traps1-V-l - Matters Arising12R550Q and 75Q'N' Connectors1946 ExhibitionBigrid ValvesCalling Racal ExpertsCareless Talk (Official Secrets Act)Cine Service SourceComponent Sources (8. J. Reed)Co-planar Valves

CR300 MemoriesEF50s in German WWll Equipment

Equipment Sought for ASR LaunchFootless valvesFor lhe record'Germany Calling .-.'

Electrocolor RecorderEquipment Disposal (see also Post-War Years)ex-IMRC Stafi Out There?Frequency MetersGL and AC/DCHawker HurricaneLissen ComponentslMains VoltagesN,4issing CallsignsMissing Half (lmage Orlhicon Sizes)Mystery Transceiver T.8.11 HA

Pirate 807sPosl-War Years

(see also Equipment Disposal)Power SuppliesProteci the SecondaryHadione EquipmentRAF RecollectionsRAF Transmitter 1087Remember the No- 17 Set?Safety First!Swedish CollectionTerman-v-TermanThermo-GeneratorsTransislor TimeValve ReliabilityValve teslingValves and lnfo Wanied'Valve & Tube Supplies' - a BouquelWhat Does the SC Code Mean?Why the Mesh?William Le QueuxContinental Iuxury radioscrystal filtersDesign historyEx-RAF Signals? (Survey block)

For posterityFrequency-changer valvesGermany calling

HROHRO enigmal,,lore on the HBO'National HRO dial'

Muirhead versionSperry originsUS PalenlAdjustment

IFFln defence ot AM!Meteor FlightDating the MH Supersonic UnilMore on GLMore on the Naval 67 setI\,,legacycle Meter Model 59Origins of H2SOrigins of the 'Q-Code'?

Origins of the Q-Code'? (cont'd)H. W. PopePrice guidesPropagation changesPye PCFIRadio Belore Hertz and l\,4arconiRadio F6campSet diiferences and saletySeven-sided'speakers and noise pollulionSolid-state experimentsMore on S-TTermanTransmitters can bite!Twins?

WS (Cdn) No. 58Afore you goA likely siory!Background to the P60Bush EU4Commercial radio

Conneclor matingConneclor namesCurious fault on a B4oDDecca Decola and R.]155Drift-f reeEF50 and cousins

EF50 and its lolklore'EMB Loan'and the EF50Equipment codes

Equipment designFancy lhatlFilament voltagesGarrard memoriesGerman WWll equipmentHandbook supplie,s'Home Broadcaster' mikesHRO made in Eritain?

KlFuSpr'd' lransceiverMore distant cousinsMore on H2SMystery items

Mystery key wilh crystalsMystery valve and Cossor valvesOrigins of 'Pressel'R.1155 intermediale frequencyRadiospares memories

Hemember the NuvistorNuvisiors

S. G. Brown loudspeakersSimple transistor circuitsSpecial EF50sSW radio in lhe '1920s and '30sT. 1'1 54/R. 1 1 55 Spotters' guideThoughts on lhe R.1155TV syslem abbreviationsUnder licenceUnusual RA.117What are they? ('Kalenised' filaments)What's wrong with British equipment?ActonlBrunel leclurers?Battery originsBC-654 modified ior marine useCar radio mods (vibrators)

Ekco P8289

Garrard clocks

Guarding the pastLaJayette HE-30 receiverlvlorse code iestingNoise levelsPhotographyProximity fuse

R.1094 receiver data wanted

Radiation Hazards

Badiospares memoriesReliable valves

Solid-stale manpacksStrange HBOStripping oul the modsTransistor circuit modsTunematicUltra-AudionValve substitutions (U141 /U184)

Wired wireless

W.S.1 8 sensitivily problems

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ISSUE PAGE CD VOL ISSUE PAGE CD VOL

W.S.1 I sensitivity problems (cont'd)Another use for the 8C221Balancing the contentCalling all KW enthusiaslsDial cord kitEarly designs revisiledEarly record players

Garrard clocksGreat Secret of WWllHand capacitance (Eddystone All World 2)Hawaiian idea'lT' - friend or liendLS5O in Russia. Switzerland & CSRMini magic-eyeN4obile PA memoriesMore on 3LO (Melbourne)Ivlolor tuningl\4useums and museology

Ivlystery Collins identiliedNovel receiver (magic eye)Perdio praisePerdio recollectionsPower supply pointsPutting my foot in itlPuzzle corner! (Cossor 41 MP)Rebuilding an R.1155Restoration tips (R.1155 control stops & paint)Seagoing memoriesSerendipity (Perdio find)Servicing safelySinclair and KingsfordSpecial AB88Stripping out the modsThe Happy Station (PCJ Hilversum)Unusual UL41

Valve oddityWhose code? (Vail)

Wired wirelessA novel receiverA quiet oasisAircraft radioEarly encryptionEddyslone panels and lypesEnigmaHallicrafters trackingHowlingJohn Slokes and EMI/HMVMilitary radio modelsProfessor ZeplerResearchTorn E.bVintage poslcardWhat is it? Magic BoxWiring errors

RECOBDINGBBC Nelwork 3 Programme'Sovnd' by F. C. JuddHislory of Magnetic Recording by F C. JuddMagnetic Wire Recording Machines by Bob Ridley

Letter

FEFEBENCE DATAlndex ol Valves, Augusl 1 91 IBadio Valve &Iubes by Geoff Arnold

Part 1 - Numbering SystemsParl 2 - UK & US Military Equivalents, pre-1944Pari 3 - N4ilitary 'CV' Equivalents

Radio Valves & Tubes by Geoff ArnoldPart4-FurtherData

T. 1 1 54/R.1 1 55 Spotters' guideTwenties loudspeakers, beginners' guide

by Derek JaquesLandmarks in valve lechnology (Mazda)US mililary equipment designations by John KeeleyUS military radio - accessories and pans by Tony Grogan

REMINISCENCESl\,,!urphy Msmorios by Terry McGoughThiny Years On by Stan Crabtree[4y Start in Telecommunications by Lorin KnightNorth Wales Wireless College, Colwyn BayNorth Wales Wireless ColJege, Student recollectionsSea Ballle by Vtctor GaomEarly wireless - at home and al sea by Allen FinchEssential work by Gordon H. Brown'On ihe road' wilh Radiospares by Harry G. ReddinBeminiscences of a Flight Radio Officer by G. HoltumPre-War experiences of wireless by Geoffrey Walsh

RESTORATIONllleter Dials by Robert A. WilsanRestoring a Bush DAC90 by G. F BakerWartime Civilian Receiver by R. Waddingham

LelterRestoring a Bush VHFgoC by G. BakerReturn to Service for a l\,4cMichael 137

by R. WaddinghamCabinet Restoration by Gerry Baker

LetterMake Do and Mend by Gerry BakerRebuilding an AR-88D by John Wells

Letter

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Flestoring an Ekco U332 Receiver by Richard Q. MarrisModirications vs. lmprovements by'AnodyneA BTH Bilou broughl back to lile by C. M. LindarsRestoring a Cryslal Calibraior No. 10

by A. J. WedgwoodRestoring a Philco 444 People's Sei

by R. J. ShanahanStory of an Hlr4V Model 541 by Malcolm George

CorrectionDecca Decoia by Malcolm GeorgeLafayelte HE-30 revived by T. S. ChristianReviving a Bobens R 77 by G. F. M. Enge{Telsen 1-V-1 revived by C. M. LindarsRestoring the B-11.16 by T. R. SandersonVintage mains superhet (Radiola 60) by Mike Lemin

LetterA loudspeaker rc?ai by Etic KempshallBebuilding an R.1155 by Dave Kemplen

SEBVICINGServicing Equipment of Bygone Days by John Eail

lntro/No. 1

Servicing Equipment o, Bygones Days by John EarlNo.2-Cossor499

SOLID STATESinclair's Micromatic by Tim WanderSony TR-63 Sloty by Enilco Tedeschi

TELEGHAPHYHistory ol the Canadian Key by Murray D. WiilerHellschreiber by Richard Konig

Letter

TELEVISIONA Look ai Christmas Past on BBC-TV

by Keith Hamer25 Years of BBC Colour TV

by Keith Hamer & Garry SmithFringe TV Reception from Alexandra Palace

by Ron WellerBBC TV Sludio Operalions and Engineering

by Latry CoalstonWhen TV was all at sea by Larry CoalstonProjection TV receivers of the 1950s by Lany CoalstonTell me, Mr Weller No. 1; the Bush TV22Tell me, Mr Weller No. 2; the Pye B18TBBC Westminster colour studio 1972

by Larry CoalstonPreparing dealers ror the TV restart in 1946Tell me [,4rWeller No.3; the Pye B16TTell me l\4r Weller No. 4; the GEC 812147Showing {ilms on BBC TV by Larry CoalstonTell me Mr Weller No. 5; Ferguson 9417We never closed! (Hislory ol ARI by F J. A. GrayThe last rolary converter by W J WilliamsonTell me Mr Weller No. 6: Pye LV30

TEST EQUIPMENT8C221 by Richard Q. Manis

LellerLM Series by Rod EurmanServicing Equipmeni of Bygone Days by John Earl

lntroTS-174NWWI Heterodyne Wavemeter by Rod Buman 5O.H.M.S. - Crystal Tester 193A

by De$mond Thacketay 17Restoring & Using Helerodyne Frequency Meters

by T. S. ChristianPart '1 - General Princjples & Suruey

of Types 15Part 2 - Restoring the Wavemeter Class D 16Part 3-The magnificent BC-22M7Part 4 - Bestoration of a BC-22'1 18

On His Majesly's Service -.- AVOMETERSby Desmond Thackeray

Restoring & Using Heterodyne Frequency MetersPart 5 - Recalibration & Accuracy of aBC-221

by T. S. ChristianCollecting (and using) Vinlage Test Equipment

by Geoff ArnoldMegacycle Meler Model 59 by Geofl ArnoldEarly Cossor oscilloscopes by'Phosphor'Restoring a Crystal Calibrator No. 10

by A.J. WedgwoodRCA TE-149 wavemeter (letter)Cossor l\rlodel 343 ganging oscillator by'PhosphofMurphy Radio. post-war inspeclion/test

by Lorin KnightTelsen AC&DC multimeler by'PhospholCalibralor Crystal No. 7 [.4k.1' by'PhospholSoviet SCR-2'1'1 by Louis MeulsteeTest meters of lhe past by C. M. Lindars

VALVESBigrid Valve by Desmond Thackeray

LetterLetler

From Screen Grid to Beam fetode by'Phosphor'Method of Fepairing Valve FilamentsTribute to lne 8O7 by Graeme WormaldVaive Reliability

LetterAmplification by Secondary Electronic Emission

by'Phosphot'Japanese UY56B

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Early Cossor oscilloscopes by'Phosphor'Restoring a Crystal Calibrator No. 10

by A.J. WedgwoodRCA TE-149 wavemeler (letler)Early COSMOS valve of Metropolitan-Vickers

by lan L. SandersFrequency changer valves by'Phosphor'Early Cossor Tin-hal valve by lan L. SandersHistory & development of the thermionic valve

by Rod BurmanNuvistors, Compactrons, frame grids, etc.

by Pat HawkerSeen through a glass darkly by Desmond ThackeraySurvey of valve suppliers by Hilary HumphriesGerman LS 50 and Allied equivalents by'PhosphofBL12P35 and derivatives by Alan DaviesLandmarks in valve technology (Mazda)

THEORYResistance & Capacitance BridgesWhy Q? by Charles H. Langton

LetterLetter

WHERE IS IT?No. 1 (Puzzle)No. 1 (Answer)LetterNo. 2 (Puzzle)No.2 (Answe0No. 3 (PuzzleNo. 3 (AnswedNo. 4 (Puzzle)No. 4 (Answe0No. 5 (Puzzle)No. 5 (Answer)No. 6 (Puzzle)No. 6 (Answer)No. 7 (Puzzle)No. 7 (AnsweoNo. 8 (Puzzle)No.8 (Answe0No. I (Puzzle)No. 9 (Answer)

Majeslic Radio 50Marconiphone T264Marconiphone V1McMichael 'Colonial'Mork lrom OrkrMMurphy A4Murphy A8Murphy A262Murphy AD94Nordmende'Carmen 55'Nordmende 'Electra 59'Nordmende 'Rigoletto'Philco 100Phitelra 283/71Philips 1410Philips 2515Philips B4X76ZPhilips VOAPocket WirelessRadionelte Symfoni - 3DRAP'Table [\4odel'Rialton Melva'Stella ST2390Varley AP43Vidor'Lady Margaret' CN429Wartime CivilianWestern Electric 44002'Revophone'Crystal Set'Rexophone' Crystal SetAlba Transistor PortableBaird TelevisorBarker 88

LetlerBelmont AC Mains SuperhetBritish Broadcast 2BTH Crystal Set Type C Form ABush VHF90CChakophone Everyman's FourChakophone Junior ThreeChakophone Junior ThreeChakophone Junior TwoChakophone No. .1 AmplifierChakophone No. 1 ReceiverChakophone Screened ThreeChakophone Warwick Portable FiveClarabui HF/LF Beceiver Mk lllaClarion 'Old Lager' Barrel RadioDe Wald 414Defianl 4-valve PorlableDeu'tscher KleinempfangerElescaphone 'Nelson'Ethophone Junior Cryslal Set N,,lk llEver Ready'Sky Baby'Ever Ready'Sky Baronel'Ever Ready'Sky Casket'Ever Ready'Sky Queen'Everyman 4'Felix the Cat'Cryslal SelGecophone Crystal Deteclor Set No. 1

Gecophone Crystal Set l\4odel No. 1. Type 8C1001HMV 1410GHMV TV/Radioqram console'Junk Food' RadiosKB'Masterpiece'Loewe (Briiish versjon)l4arconiphone Model 42 ACMarconiphone V2AlvlcMichael'Duplex Transportable'McMichael 37Midgetronic Model E[,4UMurphy 4104Murphy A24Murphy A24CMurphy A26Murphy A3Murphy A30Murphy A30Murphy A34Murphy 44Murphy A70Murphy A72Murphy AD32Murphy 84 Batlery PortablePhilco LMS Remote Control ConsolePhilips 274APhilips 634APhilips 787 AXPye 550Pye 81 7TVPye B18TTVPye Model 'MM'Pye P123BOPye P76FPye PE98U/LWRadionette Symfoni 3D - LetlerRCA 45X1 1

Roberts RlC lSpectra Radio SunglassesSterlinq R1589Stuzzi Transistor PodableTBF American MidgetVest Pocket Crystal SetVidor CN431Western Electric Crystal Sel Model No. 44001Bush VHF90CEAC Crystal Set Type BEkco AC74

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EOUIPMENTThe lollowing references may be articles, illustrations or bieJ text mentions

RECEIVEHS - BroadcastAlba 54016401740Brownie No. 2 Crysta! Set

Brownie 2-valve SetBush DAC90

BTH Crystal Receiver Type CClimax Model 55Cossor 464Ekco U29Ericsson Crystal Sel Type 0/1050EurophoneForranti 547GEC'Compact'Goblin'Time Spot'HMV Model 296HMV Model 521Jaygee CrystalA/alve SelKeslon LindleyMarconiphone T144Mcl\4ichae{ GPO Receiver WT No. 11

MclVichael Mains Screened Dimic 3[,,lurphy 436/452Murphy A76lA92Philips VsAPremier KitsPye'Mite'Pye 47XPye Baby QPye 'lnternalional'Pye MP/IVPU SeriesPye PP/AC and /BPye QUPye RS4Radione Empfangsgerat R2Rees Mace'Cameo' (U544)Rl 'Air{lo'Rl 'Aria'Rt 491Bl Cryslal Sel Type XLARl Type V4ATandberg 'Huldra'Ultra U405Alba 56Alba C112Beethoven'Little Prodigy'Burndept'Ethodyne'Bush DAC10Bush VHF6'lCity Accumulator Co. 'Lancastria'ColumbiaCossor 464ACCossor 499Cossor P44Eagle Elec'tric'Chakophone'Ekco A274Grafton Crystal Sei

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Ekco U332Emerson CR274LWFellophone Super TwoGamage'Two-valve Receiver'GEC Catkin'KB'Masterpiece'KB 3-valveMarconiphone 911Murphy AD94National Wireless Co. Type N Mk C.1 Crystal SetPhilips 577APhilips 630APhilips 6344Philips 730APhilips 8304Philips 838UPye QPAC'Saucepan Special'Scott-Taggad S.T.68UnidyneVSE 3-bandWestinghouse Amplifier Type DAWeslinghouse Tuner Type HABarker 88Ekco SW86Ferguson 203UKB Model FB10Marconiphone Type 41Neckermann WUR8651Philips 3714J15Pilot Little Maestro lvlodel 1oACPilot Little Maestro of 1939BGD 1OSOC

Strad PW461'Sweelheart'Type 31/1Brown'Crystal AmplifieaB'ownie No. 2 Model Crystal ReceiverBTH'Bijou'Crystal SetBush VHF 101Denco DR1 7Denco DR21Denco DR23 (Dencadet)Delrola 324

LeltersEldecoGecophone No. '1

Gecophone 3300HAC'T-Twin'KB ConsoleLissen Hi-O ThreeMH Supersonic UnitPiloi'Miitle Maes'tro''Service' SWLW Crystal SetSinclair MicromaticSony TR-63Whiteley/Self ridge Radiogram'Wireless Experts' Cryslal SelAbbiphone CFO crystal setAltophone cryslal receiverBTH B'JouBush TR1 1 6Bush TR90cCossor CBl 302Def iant (unknown transislor)Dynalron T69D (MIMCO 1154111551Ekco PBl89GEC BC4O3H.E.W. cryslal setKB PP31/1 'Fhapsody deluxe'KB 1930 Masterpiece[,,tullard AS407/15Philips L3G04TPhilips Theatreite seriesDelrola 3041[/cMichael 387'Bi1ou'l\ilcMichael 808'l\4usic Master' (1923)Ekco 'All Electric' 313Freshman'Masterpiece' ('1 924)

Gecophone 'Victor 3'LellerLetler

HMV 1356HMV 541Goblin'Time Spot'CRMIMCo/Dynairon 2235Philco 444 People's SetPhilips 213HUScolt 'Philharmonic'Scolt SLRN,Iscott lvlodel 803Scott Series 800s.T.100s.T.101s.l'102s.T.300s.T.500S.1700 (part)ST. Super-gram de luxe

LetterTelef unken'Arcolelte' (lette,

LetterAlba 3011Alba 3841BSA Model 4VBush EU4

LetterBush TV22 TVDecca Decola

LetterDorian Super Screened FourEkco U834 'Mariner'Fleetwood NTR-1 50GEC BC465OGecophone'Junior' crystal setGlobal GR-711Graves'Vulcan'KB Bt\,,t20

Lafayette D-32'Universal'Lafayette Dual-Wave receiverLafayette 'Sho,l-Wave Master 0'Marconi 561Marconiphone P178Masteradio D1 60'Arundel'Murphy 8143PamTRzTPhilips 474BPhilips FSG96APye 350CPye 445UPye 1101/'1101APye 1112'Seatarer'Pye 3017/30174Pye 3042'lnternational'Pye 818T TVPye P75Pye PE80'Cambridge Inlernational'Regency TR-1'Revophone'crystal selBoberis R 77Sanyo 6C-011Sony TR-55Sony TR-63Sony TFI-72Sony TR-81Sony TR-610Sony TR-620Standard Micron,c Buby SR-G430Standard SF-H115Telsen 1-V-.1Wilco 360Atwater Kent Model 20Atwaier Kent 5'1 1 (Tune-O-t\,,latic)BiJlexel

LetterClarke's Atlas Model A758Ekco P8289

LetterLetterLetler

Grebe SynchrophaseMinillex (lelte0Murphy A3AMurphy bandspread models

(A104, 476, A128, A36, A160)Perdio 'Quintet' (PRl )Perdio PR5Perdio PR73'Con'linental'Perdio PR22Perdio PR7Perdio PR95PerdioPRl02Perdio tulini 66 (Min' 6 Mk ll)Perdio PRO (PR29'N,4ayfai/)RCA Radiola 60

LetterSpontaflex

LetterStandard Micronic Buby SB-G430Tunematic (letter)3 x EF50 receiverEddyslone All World TwoEddystone 'Fours'Ekco 422Ever Beady Personal PortableEkco P8289 (lelle0General'Laf ayetle' (letie0KB'New Pup'Kingsford Console (1933)Murphy A100Perdio'Town & Counlry'

LetterLetterLetter

Bussian solid-slateRegency TB-1Sinclair Micro-FMSinclair 'Micromatic'

LettersSony TFM-1 51 : TR-6; TR-52; TR-55; TR-63; TR-65;

TR-72; TR-84: TR-86; TR-610; TR-620; TR-714;TB-81 0

Telerunken Arcoiette 3Telefunken T32Codar Mini ClipperCodar Multiband 6Eddystone All Worid/All Wave series (letters)HMV 471

Lellerlvalek'De Luxe' crystal setPeto Scoit SW 2-valveRCA Viclor 128RCA Victor 143

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Sinclair X1Sony TR-63

RECEIVERS - CommunicationsArmy LW Tuner Mk lllArmy SW Tuner Mk lllBC-342JCodar PR30Collins R3904

LetterCrystal W/T Receiver Model TdEddystone 840GPO WT7Hallicrafters 520R 'Sky Champion'Marconi 12AMarconi 394Marconi CR300/1

LetterMarconi 'Mercury'National HFSNalional HRO

National SW-3National 1-10

LetterRacal BA17LRAF Type 1 0R.1155

LetterLetter

Tuner Aircralt No. 100Bendix RA-1 BCollins 51SCollins 75SCollins F-390A

LetterLetlerLetler

Detrola 8C1206-4E52'Koln' Receiver

LetterHallicralters'Sky Ranger' S-39Hallicraflers 'Sky Rider Marine'Marconi C8100/828Marconi MR4bR.1 084Telefunken Elsa Mk.2BC-453 lo BC-455 - See under 'Command Sets'BC-453 to BC-455 - See under 'Command Sels'Collins R-390AEddystone 8884Hammarlund'Comet Pro'Marconi Marine Type 730National HROPolish OP3

Pye 'Unit Sysiem'R.1 06

R.1 5458.3582ARees lvlace Marine Type WBF Unit Type 26T.R.1196

Lel1erTuner. Aircraft Mk lll

Letler

W/T Set. Trench CW Mk lllAF-88D

LetlerB- 11

B-21B-28B-29B-50'Cigar-box' ReceiverEddystone All-World TwoHeathkii RA-1lvlagnum SW Convertorl\,,larconi'Guardlan' 1.l 93AIVlarconi Magnelic Detector

LetterMarconi 361IUarconi 579 RadiogoniometerMarconi DFG-I2Marconi Multiple TunerMCRlNaval Receiver Outfit CADNr 361Philips GM4010R.1082

LetlerTelephone Wireless Aircraft Mk. ll'Telesonic' ReceiverEast German EKBEddystone 940Marconi Crys1al Receiver Type No. 16Marconi CR100/2Marconi [/arine 352aPolish Clandestine SeriesPolish OP-3Facal R4.117Racal RA.17

Bacal RA.17 (cont'd)Letter

Racal RA.71 (letter)Radiovision'Commander'Radiovision'Hambander'R-S-H ClipperR.1 082R.1 1 55Soviet R-31 1

Soviet B-326V55R840Denco DCR1 9Eddystone 358i358X/400/400XMarconi CoheierMarconi C8100 (828)Marconi C8150Marconi CR200 (829)Marconi CR300 (Yeoman)

LetterMk.1 28Pye PCR 2R.2098.210Fadione R3

Letle.Badione R3B (lelte0819Eddystone 730/4Hallicraflers S-27Hallicratters S-38EHallicraflers S-40Heathkit SB-301Marconi 1149 HF D/Fl\4arconi AD.86Marconi AD-108l\4arconi AD.7092[4CR llvlodell AQSTnl10R308H.1 1 55H.1 481

LetterMarconi 3944Racal RA1 7LReception Set UHF Special (2A11324)'Samos''Fano'Scoti communications receiverValve Amplifiers Mk lll. and Mk lll"-wT sets B t\4k.il'Anton'FUHE'HorstA(letter)HRO (letter)KlFuSpr'd'

LetterLafayette'79' Minule-[,,lanLafayette HE-30Marconi H8110Marconi Mu!'tiple TunerN4urphy B40D (letter)P60

LetterR.1 082H.1 1 478H.tt55

LetlerLetterLetlerLetler

Eddystone 840 (modilied for blind operato0HROMarconi Type 552MCRl (Eelgian)R.1094 (lefieoR. t1 16Rees [,,!ace CAT (8R2169)

LetterTCS

Letter3 x EF50 receiverCR100/8 (Mod)cR300/259Eddystone 6200Hallicrafters S-20'Sky Champion'Japanes€ Model 92Receiver Unii K (Amplifier A51)LisbethMCRlNational HROPolish OP-3R.1 1 32H.1'155

LetterLetters

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R31 21TfTorn E.b (letter)rype ?5173W/T Receiver Model Ta

AUDIODecca Wind-up Gramophonelr'lax{ield & Harrison Wax RecorderIvlinilon Wire Recorder P55Philips 2007 LoudspeakerPhilips 5926 AmplifierHeisz l\.4icrophoneSykes-Round lMicrophoneWestern Electric Double-bulton Microphone

Western Electric E5619 MicrophoneWirek Recorders Type A, B & 49Blue-spot 66K BA loudspeakerETS Gaumont cone loudspeakerGecophone Amp,ilier 8C2585S. G. Brown Mechanical Amplifier

S. G. Brown 'Hoyal' l\41 cone loudspeakerTelesonic system

LelterLeller

BlattnerphoneBlattnerphone (lette4Reisz [,4icrophoneThereminArmot r Model 50 Wire FecorderS. G. Brown LoudspeakersE,ectrocolor Home Recorder (letter)'Recordon' Dictaling MachineWirek Type A Wire RecorderGarrard RC80 aulochangerCollaro Tape TranscriplorDulci MikeOrmond loudspeakersPhilips loudspeakerQuad elecirostaiic loudspeakerAmplion AR 19'Standard Dragon' loudspeakerGarrard turntables

LetterAeolian OrchestrelleBarrel organLoudspeakers of the 1920s

(Amplion Junior de Luxe, Sterling 'Primax',Celestion C14, ftrlagnavox)

RCA RK-24 phono oscillatorTape Recorders:

(Recordon, Reporter, Simonsound, Grundig TK20.Elizabethan lvlajor, Philips E13542A, Ferrograph Series 4,Ferrograph Series 5 stereo, Binaione. Philips 2202,Fuli Cherry, Standard SR]00. Revox G36,Tandberg Series 15 SL)

Wurlilzer juke-box 49Amplifier A51 (Receiver Unit K) 58BTH Type C2 horn (?) 56Domestic poflable record players 55

Decca acoustic; HMV 102; HMV 501; Collaro Microgram;Trixette 'Electric'; HMV 3-speed; Rye 'Black Box'; Dansette 'MajoiDansette'Conquest Auto'; Philips'All Transistoi

Magnelophon (1936)Marconi-Stille (1e34)Wesgrove VKR500

TELEGBAPHY EQUIPMENT'Enigma'MachinePower BuzzerSingle Needle TelegraphWheatstone Automatic SystemMorse Keys (various)Turbine lnterrupter

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TEST EQUIPMENTBC-221

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Crystal Calibrator No. 10Crystal Monitor Type 2Pye Tangent GalvanometerWavemeter Class D

WAVEMEIET WDSF-CWavemeter W-39BWavemeler W.1191AAvomelersBC-221Tester R/T, Type 1

D/F Test Set 1 0S/1 6587Letter

Avo CT160 Valve TesterAvo Besislance Bange ExtenderHeterodyne Wavemeler Mk.llMarconi T.F.340Marconi T.F.142EMccraw Edison N,{odel 59 GDO

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LetterCalibrator, Crystal No.7 Mk.1'Precision AVOmeterFadio Cily Model 314 tube lesterSoviet SCR-211 (Y4-1)Pilco All-in-one BadiomelerW1191 Wavemeler

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