Radio today (Jan-Mar 1939)
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1939-40 RADIO YEAR BOOK and TRADE DIRECTORY
Vinton K. Ulrich,
Year Book Editor
Copyright 1939 Contents must not be reprinted without permission
Published annually by
CALDWELL-CLEMENTS, INC. 480 Lexington, Ave., New York, N. Y.
Orestes H. Caldwell Editor
M. Clements Publisher
INDEX TO PRODUCTS
Product Page
A
AC POWER PLANTS 66
ACOUSTIC CHAMBERS 72
ACOUSTIC MATERIALS 70
ADAPTERS, TEST 67
AIRCRAFT RECEIVERS .... 45 AIRCRAFT TRANSMITTERS. 76
ALBUMS, RECORD 63
ALIGNMENT TOOLS 67
ALL-WAVE ANTENNAS .... 47 AMATEUR RECEIVERS .... 45 AMATEUR TRANSMITTERS. 76
AMPLIFIERS & KITS 70
ANALYZERS, RADIO SET.. 67 ANTENNAS & ACCESSORIES 47 ANTENNAS, TRANSMITTING 76
ANTENNA WIRE 7S
ANNTENUATORS (Precision) 64 AUDIO OSCILLATORS... 59, 67 AUDIO TRANSFORMERS... 75
AUTO ANTENNAS 47
AUTO RADIO CONTROLS,
FITTINGS, ETC 49
CABLE REPLACEMENT
TOOLS 49
AUTO RADIO SETS 45
AUTOMATIC CODE SENDERS 74 AUTO RECORD CHANGERS.. 63 AUTOMATIC TUNING UNITS
& PARTS 48
AVIATION RECEIVERS 45
AVIATION TRANSMITTERS. 76
B
BAFFLES 72
BATTERIES 50
BATTERY CHARGERS .... 49 BATTERY CHARGING
RECTIFIER TUBES 66
BATTERY PORTABLE SETS 45 BATTERY PLUGS (Sec hardware & misc. parts) .... 57
BINDING POSTS 57
BOOKS, RADIO SERVICE... 80 BROADCAST RECEIVERS .. 45 BROADCAST TRANSMITTERS 76
c
CABINET MOLDERS 69
CABINET, RADIO SET 49
CABINETS, RECORD 63
CABLE & WIRE 78
CARBON MICROPHONES ... 61
CARBON RESISTORS 64
CATHODE RAY
OSCILLOGRAPHS 59, 67
CATHODE-RAY TUBES 77
CEMENTS 62
CENTRALIZED SOUND
SYSTEMS 70
CERAMICS (Insulation) ... 58
CHARGERS. BATTERY 49
CHASSIS (Metal) RACKS
& SUPPORTS 58
CHOKES, AUDIO 75
CHOKES, R.F 50
CIRCUIT BREAKERS 74
COIL FORMS 50
COILS, I.F. & R.F 50
COIL SHIELDS 57
COILS, SPEAKER FIELD ... 72 COILS, TRANSFORMER ... 75 COIL WINDING EQUIPMENT 50 COMBINATIONS,
PHONOGRAPH-RADIO ... 45 COMMERCIAL RECEIVERS.. 45 COMM'L TRANSMITTERS... 76 COMPOSITION RESISTORS.. 64
CONCENTRIC CABLE 78
CONDENSERS, FIXED .... 50 CONDENSERS. VARIABLE.. 54 CONDENSER MICROPHONES 61 CONDENSER SPECIALTIES.. 59
CONDENSER TESTERS 67
CONES. SPEAKER 72
CONNECTORS 57
CONSOLE CABINETS 49
CONTACT MICROPHONES.. 61 CONTROLS. AUTO RADIO .. 49
CONVERTERS. ROTARY 66
CORDS. ATTACHMENT .... 78
Product
Page
Product
Page
CRYSTALS, DIAL 54
CRYSTALS, PIEZO-ELECTRIC 76 CRYSTAL CALIBRATORS
OR OSCILLATORS 67
CRYSTAL HEADPHONES ... 57 CRYSTAL MICROPHONES .. 61
D
DC GENERATORS 66
DECALCOMANIAS 54
DIALS & PARTS 54
DISCS 63
DRILLS 76
DRY CELLS 50
DYNAMIC HEADPHONES .. 57 DYNAMIC MICROPHONES.. 61
DYNAMIC SPEAKERS 72
DYNAMOTORS 66
E
ELECTRIC PHONOGRAPHS. 63 ELECTRIC TUNING UNITS
& PARTS 48
ELECTROLYTIC
CONDENSERS 50
ELECTRONIC MUSICAL
INSTRUMENTS 60
ELECTRONIC TUBES 77
ENAMELS 62
EQUALIZING, CONDENSERS 54
ESCUTCHEONS 54
F
FACE PLATES (See
Escutcheons) 54
FACSIMILE RADIO SETS. .. 45
FARM RADIO SETS 45
FARM RADIO VIBRATORS. 82
FELT WASHERS & GASKETS 57
FIBRE (Insulation) 58
FIELD COILS, SPEAKER... 72
FIELD EXCITERS 72
FIELD STRENGTH METERS 59
FILTERS, POWER LINE 69
FIXED RESISTORS 64
FLASHLIGHT BATTERIES.. 50
FLAT WOVEN CABLE 78
FLEXIBLE SHAFTS 49
FREQUENCY CONTROL
EQUIPMENT 76
FREQUENCY
MEASUREMENTS 76
FREQUENCY MODULATORS
(Test oscillator) 67
FUSES, INSTRUMENT 57
G
GAS ENGINES 66
GAS ENGINE CHARGERS... 49
GAS ENGINE PLANTS 66
GAS FILLED RECTIFIERS.. 66
GENEMOTORS 66
GLOBES. RADIO 73
GRID CLIPS 57
GRILLE CLOTHS 72
GROMMETS 57
GROUND CLAMPS 47
GUY WIRE 78
H
HAND DRILLS 76
HARDWARE & MISC. PARTS 57
HEADPHONES 57
HOLE CUTTERS 76
HOME BROADCASTING
MICROPHONES 61
HOME RADIO SETS 45
HOOK-UP WIRE 78
HORNS. SPEAKER 72
I.F. TRANSFORMERS 50
IMPEDANCE BRIDGES ..59,67
INDICATOR LIGHTS (See
Dials & Parts) 54
INDUCTANCE SPECIALTIES. 59 INDUCTANCE TRIMMER
UNITS 48
INDUSTRIAL CONDENSERS. 50 INDUSTRIAL RESISTORS... 64
INDUSTRIAL TUBES 77
INSULATED CABLE & WIRE 78 INSULATING COMPOUNDS.. 62
INSULATION 58
INSULATORS
Transmitter antenna 76
Receiver antenna 47
INTER-COMMUNICATORS .. 70 INTERFERENCE LOCATORS. 59 INTERFERENCE ANALYZERS 67
INTERPHONES 70
INVERTERS 82
JACKS 57
KNOBS 54
L
LABORATORY EQUIPMENT. 59
LACQUERS 62
LIGHTNING ARRESTERS .. 47
LINE FILTERS 69
LITZENDRAHT WIRE 78
LOCK WASHERS 57
LOGS, RADIO 73
LUGS, SOLDERING 57
M
MAGNET WIRE 78
MAGNETIC HEADPHONES.. 57 MAGNETIC SPEAKERS .... 72
MARINE RADIO SETS 45
MARINE TRANSMITTERS... 76
MASTER ANTENNAS 47
MECHANICAL AUTOMATIC
TUNING SELECTORS ... 48 MERCURY ARC RECTIFIERS 66
MERCURY SWITCHES 74
METALLIC RECTIFIERS ... 66 METERS (Laboratory type). 59
METERS (Servicing) 67
METAL CABINETS 49
MICA CONDENSERS 50
MICA (Insulation) 58
MICA TRIMMERS 54
MICROPHONES & ACCES... 61
MICROPHONE, CABLE 78
MICROVOLTERS 59
MILLIAMMETERS 67
MOTORS, GAS ENGINE ... 66 MOTORS, PHONOGRAPH ... 63
MOTORS, TUNING 48
MOULDED INSULATION ... 69 MOUNTING BRACKETS ... 57
MULTI-METERS 67
MUSICAL INSTRUMENTS,
ELECTRONIC&LIFIED 60
N
NAME PLATES 54
NEEDLES, PHONOGRAPH .. 63
NEON INDICATORS 67
NOISE-REDUCING
ANTENNAS 47
NUT DRIVERS 76
o
OHMMETERS 67
ORGANS, ELECTRONIC .... 60
OSCILLATORS 59,67
OSCILLOSCOPES 59,67
OUTLETS. ANTENNA 47
OUTPUT INDICATORS 67
Product Page
P
PADDING CONDENSERS ... 50
PAINTS 62
PANELS (Metal) 58
PAPER CONDENSERS 50
PAPER (Insulation) 58
PERMANENT MAGNET
DYNAMIC SPEAKERS. ... 72
PHONOGRAPHS, ELECTRIC. 63
PHONOGRAPH MOTORS ... 63 PHONOGRAPH-RADIO
COMBINATIONS 45
PHOTO-ELECTRIC CELLS. . . 77
PICK-UPS, PHONOGRAPH.. 63 PLASTIC CABINETS (See
plastic molders) 69
PLASTICS (Insulation) 58
PLASTIC MOLDERS 69
PLIERS 76
PLUG-IN RESISTORS (Tubes) 64
PLUGS 57
P.M. SPEAKERS 72
POLICE RADIO RECEIVERS. 45
PORTABLE RADIO SETS ... 45
POLICE TRANSMITTERS ... 76
POWER AMPLIFIERS 70
POWER LINE FILTERS... 69 POWER PLANTS, GAS
ENGINE 49
POWER RHEOSTATS 64
POWER SWITCHES 74
POWER TRANSFORMERS... 75
POWER UNITS, RECTIFIER. 66
PRE-AMPLIFIERS 70
PRECISION RESISTORS ... 64
PROTECTIVE SWITCHES... 74
PUBLIC ADDRESS SYSTEMS 70 PUBLISHERS. RADIO
SERVICE BOOKS 80
PUNCHES 76
PUSH BUTTON TUNING
UNITS & PARTS 48
R
RACKS & PANELS 58
RADIO HARNESS 78
RADIO-PHONOGRAPH
COMBINATIONS 45
RECEIVING SETS & KITS.. 45
RECEIVING TUBES 77
RECORDS 63
RECORD CHANGERS 63
RECORD PLAYERS 63
RECTIFIER TUBES
(Receiving) 77
RECTIFIERS 66
RELAYS 74
REMOTE CONTROLS 48
RESISTANCE BRIDGES .59,67
RESISTANCE CORDS 78
RESISTANCE SPECIALTIES. 59
RESISTANCE WIRE 78
RESISTORS 64
R.F. COILS 50
R.F. GENERATORS 59, 67
RHEOSTATS 64
RIVETS 57
ROTARY MACHINES 66
s
SCREW DRIVERS 76
SCREWS 57
SELF-TAPPING SCREWS... 57 SERVICE MANUALS & BOOKS 80 SERVICING EQUIPMENT... 67
SET ANALYZERS 67
SETS. RADIO 45
SHIELDED WIRE & CABLE. 78 SHIELDS, COIL & TUBE. .. 57 SIGNAL GENERATORS. ..59. 67
SOCKETS 57
SOLDERING LUGS 57
SOLDER & FLUXES 76
SOLDERING IRONS &
STANDS 76
SOUND LEVEL METERS.. 59. 67
SOUND SYSTEMS 70
SPEAKER CORDS 78
SPEAKER PLUGS (See hardware & misc. parts) ... 57
Product
Page
SPEAKER TESTERS 67
SPEAKERS & PARTS 72
SPEECH AMPLIFIERS 70
STAND-OFF INSULATORS.. 58 STANDARD SIGNAL
A.F. generators 59
R.F. generators 59
STANDS, MICROPHONE ... 61
STANDS. SPEAKER 72
STATION NAME CARDS ... 48
STORAGE BATTERIES 50
SUPPRESSORS 64
SWITCHES 74
SWITCHES, AUTOMATIC
TUNING 48
T
TABLE CABINETS, WOOD.. 49 TABLE CABINETS, PLASTIC 69
TELEGRAPH KEYS 74
TELEVISION SETS 45
TEMPERATURE COMPENSATING CONDENSERS... 50
TERMINAL STRIPS 57
TEST EQUIPMENT 59, 67
TEST EQUIPMENT SWITCHES 74
TIME SWITCHES 74
TONE CONTROLS 64
TOOLS, RADIO SERVICING. 76 TOWERS & SUPPORTS
ANTENNA (Home) 47
TOWERS. TRANSMITTING.. 76 TRANSCRIPTION PLAYERS. 63
TRANSFORMERS 75
TRANSMISSION WIRE 78
TRANSMITTER INSULATORS 76
TRANSMITTERS 76
TRANSMITTING TUBES 77
TRIMMER CONDENSERS... 54 TRIMMER INDUCTANCE
UNITS (Push button) 48
TUBES 77
TUBE SHIELDS 57
TUBE TESTERS 67
TUBES. RECTIFIER 66
TUBING (Varnished) 58
TUNING CONDENSERS 54
TUNING MOTORS 48
TUNING WANDS 67
TURNTABLES, PHONOGRAPH 63
ULTRA-HIGH FREQ.
RECEIVERS 45
UNI-METERS 67
V
VACUUM SWITCHES 74
VACUUM TUBES 77
VACUUM TUBES (Books)... SO VACUUM TUBE
VOLTMETERS 67
VARIABLE RESISTORS 64
VARNISHED CAMBRIC 58
VARNISHES 62
VELOCITY MICROPHONES.. 61 VERTICAL RADIATORS ... 76
VIBRATORS 82
VIBRATOR TESTERS 67
VOLTAGE CONTROL TUBES 77 VOLTAGE REGULATING
TRANSFORMERS 75
VOLTMETERS 67
VOLUME CONTROLS 64
w
WASHERS 57
WAVE ANALYZERS 59
WAVE CHANGE SWITCHES. 74
WAXES 62
WIND CHARGERS 49
WIRE 78
WIRE-WOUND RESISTORS.. 64
WIRESHIELD 78
WOBBULATORS 67
WRENCHES 76
M4RCH, 7939
43