American Transformer Schematics, Service
manual or circuit diagram £1.80 (~ $2.20 or €2.10)

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211 American Transformer models listed

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American Transformer 1001932GernsbackGernsback 3Car Radio665-667thumb
American Transformer 1001933GernsbackGernsback 1 AutoCar Radio234thumb
American Transformer 100AR1934RiderRider 5American Transformer1thumb
American Transformer 1201932GernsbackGernsback 3Radio668thumb
American Transformer 1201391933RiderRider 2American Transformer11thumb
American Transformer 160 ;AC1934GernsbackGernsback 5Radio870thumb
American Transformer 160 ;AVC1931GernsbackGernsback 2Radio182Jthumb
American Transformer 2 AP1930GernsbackGernsback 1Amplifier342thumb
American Transformer 200 ;Series Short Wave1931GernsbackGernsback 2Radio468A-468Gthumb
American Transformer 2001933RiderRider 3GM3thumb
American Transformer 21 D ;High Power Box1930GernsbackGernsback 1Amplifier342thumb
American Transformer 210 ;Power Amp1933RiderRider 1American Transformer1thumb
American Transformer 2201931GernsbackGernsback 2Radio468H-468Pthumb
American Transformer 240 ;AC1934GernsbackGernsback 5Radio871thumb
American Transformer 2411934RiderRider 5American Transformer2thumb
American Transformer 25 1601934GernsbackGernsback 5Radio870thumb
American Transformer 25 2401934GernsbackGernsback 5Radio871thumb
American Transformer 25 2601932GernsbackGernsback 3Radio669thumb
American Transformer 25 2801934GernsbackGernsback 5Radio872thumb
American Transformer 25 511930GernsbackGernsback 1Radio328thumb
American Transformer 25 531930GernsbackGernsback 1Radio328thumb
American Transformer 25 551930GernsbackGernsback 1Radio328thumb
American Transformer 25 901930GernsbackGernsback 1Radio328Athumb
American Transformer 25 911930GernsbackGernsback 1Radio328Athumb
American Transformer 25 941931GernsbackGernsback 2Radio458-459thumb
American Transformer 250 ;Power Amp1933RiderRider 1American Transformer2thumb
American Transformer 251601933RiderRider 3American Transformer1thumb
American Transformer 252201933RiderRider 3American Transformer5thumb
American Transformer 252601934RiderRider 4American Transformer2thumb
American Transformer 252801933RiderRider 3American Transformer8thumb
American Transformer 25401933RiderRider 1American Transformer5thumb
American Transformer 25611933RiderRider 1American Transformer7thumb
American Transformer 25941933RiderRider 2American Transformer5thumb
American Transformer 25A ;Power Amp1933RiderRider 1American Transformer1thumb
American Transformer 25A1930GernsbackGernsback 1Amplifier334Athumb
American Transformer 2601932GernsbackGernsback 3Radio669 670 672thumb
American Transformer 280 ;AC1934GernsbackGernsback 5Radio871thumb
American Transformer 2801932GernsbackGernsback 3Radio674thumb
American Transformer 3001933GernsbackGernsback 4Radio268-269thumb
American Transformer 3201933GernsbackGernsback 4Radio270thumb
American Transformer 3401933GernsbackGernsback 4Radio271-272thumb
American Transformer 3601933GernsbackGernsback 4Radio273thumb
American Transformer 3601934RiderRider 5American Transformer3thumb
American Transformer 401931GernsbackGernsback 2Radio456 457 463 329(V3)thumb
American Transformer 401933RiderRider 1Steinite1thumb
American Transformer 400 ;AC DC1934GernsbackGernsback 5Radio866thumb
American Transformer 422 ;AC DC1934GernsbackGernsback 5Radio867thumb
American Transformer 4221934RiderRider 4American Transformer7thumb
American Transformer 423 ;AC DC1934GernsbackGernsback 5Radio867thumb
American Transformer 4231934RiderRider 4American Transformer7thumb
American Transformer 4251934RiderRider 4American Transformer8thumb
American Transformer 4401934RiderRider 4American Transformer9thumb
American Transformer 4501934RiderRider 4American Transformer10thumb
American Transformer 4701934GernsbackGernsback 5Radio868thumb
American Transformer 4701934RiderRider 4American Transformer11thumb
American Transformer 472 ;Same as 4701934GernsbackGernsback 5Radio868thumb
American Transformer 4721934RiderRider 4American Transformer11thumb
American Transformer 4801934BeitmanBeitman 1926-38Transformer Co203thumb
American Transformer 4801934GernsbackGernsback 5Radio869thumb
American Transformer 4801934RiderRider 4American Transformer12thumb
American Transformer 4901934RiderRider 5American Transformer4thumb
American Transformer 5001934RiderRider 5American Transformer5thumb
American Transformer 51 ;AC1933RiderRider 1American Transformer3thumb
American Transformer 511930BeitmanBeitman 1926-38Transformer Co202thumb
American Transformer 511930GernsbackGernsback 1Radio328thumb
American Transformer 53 ;AC1933RiderRider 1American Transformer3thumb
American Transformer 531930BeitmanBeitman 1926-38Transformer Co202thumb
American Transformer 531930GernsbackGernsback 1Radio328thumb
American Transformer 55 ;AC1933RiderRider 1American Transformer3thumb
American Transformer 551930BeitmanBeitman 1926-38Transformer Co202thumb
American Transformer 551930GernsbackGernsback 1Radio328thumb
American Transformer 601930GernsbackGernsback 1Radio355thumb
American Transformer 611931GernsbackGernsback 2Radio460 462thumb
American Transformer 701931GernsbackGernsback 2Radio460-462thumb
American Transformer 801931GernsbackGernsback 2Radio465thumb
American Transformer 831931GernsbackGernsback 2Radio466thumb
American Transformer 841932GernsbackGernsback 3Radio662-664thumb
American Transformer 851932GernsbackGernsback 3Radio662-664thumb
American Transformer 901930GernsbackGernsback 1Radio328A 464(V2)thumb
American Transformer 911930GernsbackGernsback 1Radio328Athumb
American Transformer 91A1930GernsbackGernsback 1Radio328Athumb
American Transformer 921931GernsbackGernsback 2Radio467thumb
American Transformer 941931GernsbackGernsback 2Radio458-459thumb
American Transformer A B C Power Unit1930GernsbackGernsback 1Amplifier26thumb
American Transformer A601936GernsbackGernsback 7Radio580thumb
American Transformer AC1001933RiderRider 2American Transformer7thumb
American Transformer AC1601933RiderRider 3American Transformer1thumb
American Transformer AC2201933RiderRider 3American Transformer5thumb
American Transformer AC2401933RiderRider 2American Transformer12thumb
American Transformer AC2401934RiderRider 4American Transformer1thumb
American Transformer AC2601934RiderRider 4American Transformer2thumb
American Transformer AC2801933RiderRider 3American Transformer8thumb
American Transformer AC3001934RiderRider 4American Transformer4thumb
American Transformer AC3201934RiderRider 4American Transformer5thumb
American Transformer AC3401934RiderRider 4American Transformer6thumb
American Transformer AC4201933RiderRider 3American Transformer10thumb
American Transformer AC601933RiderRider 1American Transformer5thumb
American Transformer AC611933RiderRider 1American Transformer7thumb
American Transformer AC701933RiderRider 1American Transformer7thumb
American Transformer AC801933RiderRider 1American Transformer10thumb
American Transformer AC811933RiderRider 1American Transformer10thumb
American Transformer AC901933RiderRider 1American Transformer10thumb
American Transformer AC90A1933RiderRider 1American Transformer10thumb
American Transformer AC911933RiderRider 1American Transformer10thumb
American Transformer AC941933RiderRider 2American Transformer2 5thumb
American Transformer AC951933RiderRider 2American Transformer2thumb
American Transformer AM201936GernsbackGernsback 7Radio580thumb
American Transformer Ameritran ;Power Unit1933RiderRider 1American Transformer1thumb
American Transformer Approved Audio Circuits1930GernsbackGernsback 1Amplifier334Athumb
American Transformer C101936RiderRider 7American Transformer1thumb
American Transformer C161936RiderRider 7Radio Wire2thumb
American Transformer C171936RiderRider 7American Transformer2thumb
American Transformer C211936RiderRider 7American Transformer3thumb
American Transformer C271936RiderRider 7American Transformer3thumb
American Transformer C331936RiderRider 7American Transformer4thumb
American Transformer Clarion ;TC11935GernsbackGernsback 6Radio1050thumb
American Transformer Clarion ;TC11936FileAmerican Transformer_TCA-TC1 ;Clarion_TC2 ;Clarion
_Clarion ;TC1_Clarion ;TC2-1936.Gernsback.Radio
Radiopdfthumb
American Transformer Clarion ;TC11936GernsbackGernsback 7Radio118thumb
American Transformer Clarion ;TC11938RiderRider 9American Transformer1thumb
American Transformer Clarion ;TC21935GernsbackGernsback 6Radio1050thumb
American Transformer Clarion ;TC21936FileAmerican Transformer_TCA-TC1 ;Clarion_TC2 ;Clarion
_Clarion ;TC1_Clarion ;TC2-1936.Gernsback.Radio
Radiopdfthumb
American Transformer Clarion ;TC21936GernsbackGernsback 7Radio118thumb
American Transformer Clarion ;TC21938RiderRider 9American Transformer1thumb
American Transformer DeLuxe Recording Amplifier1931GernsbackGernsback 2Amplifier143thumb
American Transformer Hum Reduction Chart1931GernsbackGernsback 2Misc145thumb
American Transformer P Unit1933RiderRider 1American Transformer1thumb
American Transformer PA Unit ;Power Supply1933RiderRider 1American Transformer1thumb
American Transformer PF 2501930GernsbackGernsback 1Amplifier334thumb
American Transformer PF 2811931GernsbackGernsback 2Amplifier144thumb
American Transformer PF 524A1931GernsbackGernsback 2Amplifier145thumb
American Transformer Pickup Matching Circuit1931GernsbackGernsback 2Misc143thumb
American Transformer Plate Supply Transformer Connection1930GernsbackGernsback 1Misc334Bthumb
American Transformer PP 2501931GernsbackGernsback 2Amplifier144thumb
American Transformer TC1 ;Clarion1935GernsbackGernsback 6Radio1050thumb
American Transformer TC1 ;Clarion1936FileAmerican Transformer_TCA-TC1 ;Clarion_TC2 ;Clarion
_Clarion ;TC1_Clarion ;TC2-1936.Gernsback.Radio
Radiopdfthumb
American Transformer TC1 ;Clarion1936GernsbackGernsback 7Radio118thumb
American Transformer TC1 ;Clarion1938RiderRider 9American Transformer1thumb
American Transformer TC101935GernsbackGernsback 6Radio1052thumb
American Transformer TC2 ;Clarion1935GernsbackGernsback 6Radio1050thumb
American Transformer TC2 ;Clarion1936FileAmerican Transformer_TCA-TC1 ;Clarion_TC2 ;Clarion
_Clarion ;TC1_Clarion ;TC2-1936.Gernsback.Radio
Radiopdfthumb
American Transformer TC2 ;Clarion1936GernsbackGernsback 7Radio118thumb
American Transformer TC2 ;Clarion1938RiderRider 9American Transformer1thumb
American Transformer TC201934RiderRider 5American Transformer7thumb
American Transformer TC201935GernsbackGernsback 6Radio1053thumb
American Transformer TC211934RiderRider 5American Transformer7thumb
American Transformer TC211935GernsbackGernsback 6Radio1053thumb
American Transformer TC221935GernsbackGernsback 6Radio1054thumb
American Transformer TC221938RiderRider 9American Transformer3thumb
American Transformer TC231935GernsbackGernsback 6Radio1054thumb
American Transformer TC231938RiderRider 9American Transformer3thumb
American Transformer TC241935GernsbackGernsback 6Radio1054thumb
American Transformer TC251935GernsbackGernsback 6Radio1054thumb
American Transformer TC261935GernsbackGernsback 6Radio1054thumb
American Transformer TC271935GernsbackGernsback 6Radio1054thumb
American Transformer TC281935GernsbackGernsback 6Radio1055thumb
American Transformer TC281937RiderRider 8American Transformer2thumb
American Transformer TC291935GernsbackGernsback 6Radio1055thumb
American Transformer TC291937RiderRider 8American Transformer2thumb
American Transformer TC301934RiderRider 5American Transformer6thumb
American Transformer TC301936GernsbackGernsback 7Radio579thumb
American Transformer TC311935GernsbackGernsback 6Radio1056thumb
American Transformer TC311939RiderRider 10American Transformer1thumb
American Transformer TC35A1935GernsbackGernsback 6Radio1057thumb
American Transformer TC35A1939RiderRider 10American Transformer2thumb
American Transformer TC35LW1935GernsbackGernsback 6Radio1057thumb
American Transformer TC35LW1939RiderRider 10American Transformer2thumb
American Transformer TC361935GernsbackGernsback 6Radio1058thumb
American Transformer TC361939RiderRider 10American Transformer4thumb
American Transformer TC36A1935GernsbackGernsback 6Radio1059thumb
American Transformer TC36A1938RiderRider 9American Transformer4thumb
American Transformer TC36LW1935GernsbackGernsback 6Radio1059thumb
American Transformer TC36LW1938RiderRider 9American Transformer4thumb
American Transformer TC371935GernsbackGernsback 6Radio1060thumb
American Transformer TC371938RiderRider 9American Transformer5thumb
American Transformer TC37A1935GernsbackGernsback 6Radio1061thumb
American Transformer TC37A1939RiderRider 10American Transformer5thumb
American Transformer TC37LW1935GernsbackGernsback 6Radio1061thumb
American Transformer TC37LW1939RiderRider 10American Transformer5thumb
American Transformer TC381935GernsbackGernsback 6Radio1062thumb
American Transformer TC381938RiderRider 9American Transformer6thumb
American Transformer TC391935GernsbackGernsback 6Radio1063thumb
American Transformer TC391937RiderRider 8American Transformer7thumb
American Transformer TC39A1935GernsbackGernsback 6Radio1054thumb
American Transformer TC39A1938RiderRider 9American Transformer7thumb
American Transformer TC39LW1935GernsbackGernsback 6Radio1054thumb
American Transformer TC39LW1938RiderRider 9American Transformer7thumb
American Transformer TC401934RiderRider 5American Transformer9thumb
American Transformer TC421935GernsbackGernsback 6Radio1064thumb
American Transformer TC421937RiderRider 8American Transformer4thumb
American Transformer TC431935GernsbackGernsback 6Radio1064thumb
American Transformer TC431937RiderRider 8American Transformer4thumb
American Transformer TC441935GernsbackGernsback 6Radio1064thumb
American Transformer TC441937RiderRider 8American Transformer4thumb
American Transformer TC501934RiderRider 5American Transformer10thumb
American Transformer TC501936GernsbackGernsback 7Radio580thumb
American Transformer TC521934RiderRider 5American Transformer9thumb
American Transformer TC52A1938RiderRider 9American Transformer8thumb
American Transformer TC531936GernsbackGernsback 7Radio579thumb
American Transformer TC53A1935GernsbackGernsback 6Radio1065thumb
American Transformer TC61935GernsbackGernsback 6Radio1051thumb
American Transformer TC61937RiderRider 8American Transformer1 3thumb
American Transformer TC601934RiderRider 5American Transformer11thumb
American Transformer TC601935GernsbackGernsback 6Radio1066thumb
American Transformer TC651935GernsbackGernsback 6Radio1067thumb
American Transformer TC651937RiderRider 8American Transformer4 6thumb
American Transformer TC661935GernsbackGernsback 6Radio1068thumb
American Transformer TC661939RiderRider 10American Transformer6thumb
American Transformer TC751935GernsbackGernsback 6Radio1069thumb
American Transformer TC751939RiderRider 10American Transformer6thumb
American Transformer TC761935GernsbackGernsback 6Radio1069thumb
American Transformer TC761939RiderRider 10American Transformer6thumb
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These radio, TV, record player, amplifier, amp and tape or cassette recorder schematics, circuit diagrams and service manuals are mostly high quality, very readable scans and will usually be Emailed within an hour or two, if I need to scan an item, or it's the middle of the night, it may take a little longer! Here in the UK it is 19:19. If more than one schematic is listed for a model I will generally send them all, unless too big to attach! Specialising in British schematics Roberts, Hacker, Bush, Pye etc. also American and German manuals feature strongly, search for what you need. Multi page manuals are Emailed as pdfs. Please Email or phone 0788 4425213 Thanks for looking, Mike.

Search for your Schematic



Fill in the "Make" and "Model" boxes, if you are unsure of the model, leave it blank and I will list ALL models for that manufacturer, similarly if you only have the model number leave "Make" blank and I will list similar model names from ALL manufacturers. How to repair your radio. More explanation here. Some sources searched :-
Book SetKEYYears
J.F. Riders Perpetual Rider 1920-54
Trader Service sheets Trader 1933-81
Beitmans Radio Diags Beitman 1926-69
Beitmans TV Diagrams BeitmanTV 1947-70
Gernsback Radio Diags. Gernsback 1922-34
Empfanger Schaltungen ES 1928-57
RCA Service Notes RCASN 1923-52
Broadcaster Supplements Broadcaster 1934-42
Radio and TV 36 vol set RTV 1945-86
Radio and TV 5 vol set RTV5 1945-54
Crosley Service Suppls. Crosley 1929-42
My Pre-scanned Files File =>2022
The search logic is slightly "fuzzy" in that it's case insensitive and ignores punctuation so, model TR-510 is the same as tr510, and G.E.C is the same as "gec".

(247201 schematics* by 1828 different manufacturers indexed!)
Updated 18th. Dec 2023


Search Time = 211 results in 56.9 mS. Log
ABCAC DaytonAccurateAce
ACECAceToneAcheAcme
AcornAcousticAcousticalAcra Test
Acra ToneAdaAdaptolAddison
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AdventAEAAEGAEI
AELAeonicAeradioAerialite
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AerodyneAetnaAFBAffiliated
AGEAgilentAH GrebeAhemo
AimsAir CastleAir ChiefAir King
Air KnightAir MinistryAir RadioAirline
AirmecAiroAirtoneAirzone
AiwaAjaxAJSAkai
AKGAkkordAkradAlamo
AlanAlbaAlchemistAlden
AlesisAlfaAlgeneAllander
AllesandroAllied Engineering InstituteAlliedAllocchio Bacchini
AlphaAlpinistAltarAltec Lansing
AltoAmalgamatedAmatoAmbassador
AmberAMCAmcronAmerican Bosch
American DataAmerican Foundation For the BlindAmerican MeriLeiAmerican Motors
American TransformerAmerican TVAmericanAmeritron
AmpegAmpexAmphenolAmplion
AmproAmradAmstradANC
AndreaAngstremANKAnsley
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ApexApogeeApparatusAppel Henderson
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ArelArenArenaArgos
ArgosyArgusAriaAriane
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ARTArthur AnsleyArtoneArvin
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AvcoAvery FisherAviolaAVO
AWAAward SessionAwardAxess
AzdamAztecBad StoneBadcat
BairdBalcombeBaldwinBalkeit
BalkiteBallantineBandBoxBandmaster
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BarRadioBARTGBASFBassMan
BauerBBCBBEBeaning
BeckerBeedeBeethovenBehringer
BeitmanBekoBelcoBelcom
Bell and HowellBellBelleBelmont
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BenksonBensonBeogramBeolit
BerdskBERECBerlinBernard
BernburgBerning SeigfriedBertonciniBespeco
BettersetBF GoodrichBGWBiennophone
BiggBinatoneBinsonBK
Black HeartBlackhawkBlackstarBlaupunkt
Blocs AccordBlohmBlonderBlue Spot
BobinasBogenBognerBolt
BondBoogieBoschBose
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BrownieBrowningBRTBRTR
BrunoBrunswickBrushBSR
BTEBTHBTSBuchla
BuckinghamBudBugeraBuick
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BushBushLaneBushManualButler
BYEBylockCable NelsonCAC
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CaseCastillaCavelcadeCBS
CelestionCentral EquipmentCenturyCER
CGEChakophoneChampChampion
ChancellorChannel MasterChannelCheliabinsk
ChevroletChieftanChryslerCihan
CiscoCities Service OilCitronicCivilian
ClagoClarionClasse ;AudioClearsonic
CleartoneClimaxClintonClipper
ClydonCMCCoast to Coast Codar
Col R TelCollaroCollinsCollorado
ColonialColor soundColortelColumbia
ComixCommonwealthConcordConrad Johnson
ConsolidatedConsomelloContessaContinental
ConvairCoOpCoronaCoronado
CoronetCorvairCorvetteCosmos
CossorCouchCourierCraftsmen
CrateCRCCrescentCrest Audio
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CrystalCTRCurrysCyldon
CyrusCzeijaDAFDan Armstrong
DanelectroDanoDansetteDansk
DARBDartingtonDataDaven
David BogenDavid GrimesDaxonDay Fan
DayRadDaystromDaytonDB
DBXDe ForestDean MarkleyDecanno
DeccaDeccasoundDefiantDelco
DelmonicoDeltaDeltalabDenco
DenonDesotoDetrolaDeVar
DeWaldDickersonDictographDiezel
DigitechDioraDKEDnepropetrovsk
DodDodgeDominionDon Lee
DorchesterDoricDouglasDrake
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DynatronEagleEAPEAR
EarlEarthEasternEAW
ECAEchophoneEchoplexEchoTape
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EdenEdison BellEdisonEdiswan
EDPEdwardsEffedibiEgnater
EH ResearchEH ScottEHRAEico
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Electronic CorpElectronic Dream PlantElectronic LabsElectronic Music Labs
ElectrophoneElectroplexElectroVoiceEletrofone
ElgarElizabethanElkElka
ElmugElpicoEltraElxon
EMCEmerson ;ArgentinaEMIEmisonic
EMLEMMEmorEmpire Designing
Empire ElectricalEMSEmtronEMU
EmudEMWEnekaEngl
English ElectricEnvoyEpiphoneERLA
ErmsaERTErwaES
EspeyEsquireEsteyEstyma
EtraEtronicEumigEurophon
EurophoneEvansEverreadyExcelsior
ExelradFacitFactotumFADA
FairbanksFairchildFairlightFalcon
FalksFansteelFapesaFarfisa
FarnellFarnsworthFarrandFasma
Federal ManufacturingFederal RadioFederalFederated
FelgateFenderFergusonFerrando
Ferranti ;SimilarFerrarFerrisFerrograph
FiatFidelityFinluxFiolent
FirestoneFirst National RadioFisherFisk
FittonFJ FitzgeraldFleetwoodFlorac
FlukeFlush WallFM SpecialitiesFNR
FonotalkFord PhilcoFordFordson
FourierFoxxFramusFranklin
FreedFrench JesseFreshmanFret and Foot
Frost MintonFultonFunkstrahlFurguson
FurgusonicFurmanFuttermanFuturama
GalaxyGallien KruegerGalvinGamble Skogmo
GarnetGarodGarrardGates
GBCGCHQGE ;ArgentinaGEC
GecophoneGelosoGemGemeinschafts
GenalexGeneral DynamicsGeneral FireGeneral Household
General ImplementGeneral IndustriesGeneral InstrumentGeneral Radio
General TVGenericGenRadGeodyn
GernsbackGerufonGetaGiannina
GibsonGigracGilbertGilfillan
GladstoneGlobeGMGoblin
Goerz MetrawattGolden TubeGoldentoneGoldpfiel
GoldringGoldstarGonsetGoodmans
GoodYearGordon ElfGothamGould
GraetzGraham PaigeGraham PhilcoGrainger
GramaphoneGramdeckGrammontGrampian
GranadaGrancoGrandinGrant
GrantlineGrasmanGrasmannGraves
Gray DanielsonGrayGraybarGrebe
GregoryGretschGrigsbyGrommes
GrooveTubeGrossGroznyGrundig
GTGuildGuitar ResearchGulbransen
H ClarkeHACHackerHaco
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Harman KardonHarmonyHarold SheversHarris
HartkeHarty YoungHarvardHarvey Wells
HastingsHatryHEAHealing
Hear All ContinentsHeathHeathkitHeli
HenryHenrys RadioHerbert HornHermes
HetroHF LabsHH ;ElectronicsHH Scott
Hi LoHickokHitachiHiwatt
HKHMGCCHMV ;AustraliaHMV New Zealand
HoffmanHohnerHondaHoodwin
HornyHornyphonHotpointHoward
HPHudson MotorsHudson RossHudson
Hughes KettnerHupmobileHuthIbanez
IberiaICAIcomIdeal
ImefonImpactImperialIncarRadio
IndesitIndustria RadiotecnicaIndustrial ElectronicIndustrial Instruments
InelroIngelenInsulineIntensofunk
InterceptorInterMIntermarkInternational Detrola
International industriesInternationalInterOceanInterstate
InvictaInvictusIrradioIskra
ITTJ G GravesJacksonJadis
JahnkeJamesJasonJBL
JDJefferson TravisJenJenkins
JenningsJerroldJerry DonahueJesse
Jet CityJewelJimi HendrixJMF
John MeckJohn RadioJohnsonJolida
JordanJothaJP SeeburgJuergen Simon
JugoJungmannJupiterJVC
JW DavisKaar EngineeringKadetteKaiser
KalamazooKamenskKampoKappler
KapschKaradioKawaiKay
KBKeighleyKeller FullerKellog
Ken BrownKennedyKenproKent
KenwoodKernwoodKetayKiev
KingKingsKingstonKishtim
KittyhawkKlangfilmKlemtKLH
KlingerKnightKnightKitKO
KochKodelKolledaKonka
KorgKortingKosmovoxKoyo
KrakauerKramolinKrefftKriesler
KrishkeKrohlerKudelskiKurzweil
KustomKW communicationsKylectronL and L
L TatroLabogaLafayetteLamagna
LamcoLandryLaneyLang
LangeLangevinLarinkoLaselle
LaurehkLeaderLeakLeander
LearLectrolabLeipzigLembeck
LeningradLesamLesleyLeslie
LeutzLevellLewolLewt
LexiconLifcoLincolnLine 6
LinearLissenLoeweLoftin
LoganLohjaLondon CityLondon Electric
LongLordLorenzLotus
Loud ;TechnologiesLowreyLTPLumophon
LuxorLyricLytle and CanonMac
MackayMackieMacoMacy
Madison MooreMadrigalMaestoMaestro
MagatoneMagic ToneMagnadyneMagnatone
MagnavoxMaguireMaihakMains Radio Gramaphones
MaintainenceMajesticMajorMallory
MantelMantolaMarantzMarc
Marconi ;CanadaMarconiphoneMarcucciMarelli
MargolinMark SimpsonMarkMarkBass
MarlboroMarmaxMarshallMarti
MartinMasbelMascoMashpriborintorg
Master CareMaster RadioMasteradioMasterpiece
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