Modulation
Showing all 61 results
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Acme Apparatus Co. A-3 Modulation Transformer Vintage Amateur Radio RARE!
$100.00 Add to cart -
Antique K&D Variable Resistor -Filament Current Control for Early Radios – RARE!
$120.00 Add to cart -
Blue GEM Vacuum Tube RARE Early Radio Soooo Blue!
$175.00 Add to cart -
Daven Radio 3 Tube Amplifier With Daven Tubes RARE RARE RARE
$690.00 Add to cart -
Garrard SPG3 Stylus Pressure Gauge Phonograph Hi Fi Needle Cartridge Test
$20.00 Add to cart -
General Radio 1307-A Transistor Oscillator Test Equipment
$250.00 Add to cart -
General Radio 1550-A Octave Band Noise Analyzer Test Equipment Vintage RARE
$200.00 Add to cart -
General Radio 1552-B Sound Level Calibrator Vintage Test Equipment
$125.00 Add to cart -
General Radio 213 Audio Oscillator 1000 Cycle Tuning Fork Test Equip 20s RARE
$595.00 Add to cart -
General Radio 722-D Precision Condenser Test Unit Vintage Radio 1951 RARE
$125.00 Add to cart -
General Radio 813-A Oscillator 1000 Cycles RARE Test Unit Vintage
$455.00 Add to cart -
General Radio Type 586 Power Level Indicator Panel 1931-32 RARE
$225.00 Add to cart -
H.H. Scott LK-72 Stereo Hi Fi Tube Amplifier Vintage Classic High Fidelity
$979.00 Add to cart -
Jewell Output Meter 559 Vintage Test Equipment RARE! Early Radio
$45.00 Add to cart -
Kellogg Wave Master Vintage Set With Tubes RARE Classic Early Radio Wavemaster
$210.00 Add to cart -
Leeds and Northrup Vibration Galvanometer 1924 Scientific Measurement Instrument
$175.00 Add to cart -
Mini Tube Amp Mono Vintage AMD The Fisher PR-6 RARE 12AX7 Phono Preamp
$199.00 Add to cart -
Philmore Crystal Radio Tuner Detector Cats Whisker Small Vintage Amateur #2
$150.00 Add to cart -
Philmore VU-5 Miniature Analog Panel VU Meter for Audio NOS In Box RARE!!!
$70.00 Add to cart -
RAREST Western Electric 25-B Amplifier WITH 205D Tubes 1920s Vintage UNOBTAINIUM
$9,000.00 Add to cart -
RCA BA-8A Broadcast Console With Extra Meter and Updated Knobs Vintage RARE
$5,900.00 Add to cart -
RCA General Electric PR-539 Rheostat Antique Variable Resistor RARE!!!!
$55.00 Add to cart -
RCA High Voltage Rectifier Socket NOS Part 133877
$10.00 Add to cart -
RCA QC121 Quartz Crystal Oscillator for Early Radio RARE Vintage Amateur Ham
$80.00 Add to cart -
RCA Radiotron Vacuum Tube 864 Vintage Early Radio RARE!!! #1
$75.00 Add to cart -
RCA V Victor Phonograph Stylus Needle Reproducer Head
$120.00 Add to cart -
Shure A15LA Line Transformer XLR Adapter NOS
$33.00 Add to cart -
Shure Headset 512 New In Box Some Damage – Easy Fix
$95.00 Add to cart -
The Fisher PR-6 Tiny Single Tube Amp Vintage Mono Preamp – Darn Cute!
$199.00 Add to cart -
Thordarson Type R Spark Gap Transformer 1917 Tesla Coil RARE MAYHEM!
$1,750.00 Add to cart -
Thordarson Variable Condenser Early Radio
$55.00 Add to cart -
Tiny Amp PR-6 Single Tube The Fisher Vintage Mono Preamp – Adorable!
$199.00 Add to cart -
Triplett 324 Round D.C. Volt Meter Gauge Vintage Broadcast Radio RARE!!!
$55.00 Add to cart -
Vintage D.C.Amperes Panel Meter Model Rectifier Corp 1957 Classic!
$20.00 Add to cart -
Vintage PT-515 Top Hat Diodes – Group of 3 Used – Radio Phonograph Television
$13.00 Add to cart -
Vintage Westinghouse 936862 Milliamperes Meter for Measurement
$125.00 Add to cart -
Western Electric 107-A Amplifier Portable RARE RARE RARE Museum Piece
$1,625.00 Add to cart -
Western Electric 112-A Output Transformer RARE Audio Radio Part
$260.00 Add to cart -
Western Electric 13C Amplifier Early Radio Super Holy Cow RARE RARE RARE Vintage
$7,500.00 Add to cart -
Western Electric 14A Loud Speaking Telephone Outfit Tube Amplifier HOLY COW RARE
$8,500.00 Add to cart -
Western Electric 2 A Current Supply Set Power for Loud Speaking Telephone Outfit
$3,900.00 Add to cart -
Western Electric 242-A Vacuum Tube Vintage SUPER RARE! Early Radio WE
$2,650.00 Add to cart -
Western Electric 276-A Vacuum Tube RARE!!! Vintage WE Early Radio
$1,100.00 Add to cart -
Western Electric 34-A Amplifier SUPER RARE Includes Tubes UNOBTAINIUM 20s
$8,750.00 Add to cart -
Western Electric 384-A Vacuum Tube RARE!!! WE Early Radio
$200.00 Add to cart -
Western Electric 4-A Reproducer 1-A Tone Arm Phonograph Stylus RARE
$1,500.00 Add to cart -
Western Electric 4-T Public Address Ancient PA Mic Pre System RARE RARE RARE!!!!
$7,500.00 Add to cart -
Western Electric 522W Speaker Horn Driver Vintage RARE!!!
$175.00 Add to cart -
Western Electric 528 Headset Operator Switchboard Headphones RARE Vintage
$46.00 Add to cart -
Western Electric Console 10A Cabinet 267A Control Panel RARE Mic Mixer Vintage
$8,100.00 Add to cart -
Western Electric D-86327 Vacuum Tube 104-D NOS? Original Box UNTHINKABLY RARE!
$900.00 Add to cart -
Western Electric D-93306 Reproducer Head Stylus Cartridge RARE 4A Phonograph #1
$375.00 Add to cart -
Western Electric D-93306 Reproducer Head Stylus Cartridge RARE 4A Phonograph #2
$375.00 Add to cart -
Western Electric D173028 Carbon Microphone Shaker RAREST OF RARE
$200.00 Add to cart -
Western Electric RA-1283 Microphone Mixer SUPER RARE Vintage UNOBTAINIUM
$7,800.00 Add to cart -
Western Electric Tube Amplifier Mic Mixer CRAZY RARE RARE RARE!!! 20s
$12,000.00 Add to cart -
Western Electric VT-1 Electron Vacuum Tube RARE!!! WE Early Radio
$200.00 Add to cart -
Western Sound Electric Laboratories Tube Mic Preamplifier PA Mixer Amp RARE!!!!!
$575.00 Add to cart -
Westinghouse RCA SUPER RARE 2-tube Rebroadcast Receiver 5-tube Amp 20s Radio
$4,750.00 Add to cart -
Weston Decibel Panel Meter Type 61 Model 301 Vintage Audio Classic!
$22.00 Add to cart -
William J. Murdock Knife Switch Vintage Early Radio Broadcast RARE!
$280.00 Add to cart