General Radio Equipment
 

General Radio
Impedance Bridge

(EQP) GR-1650-A
General Radio impedance bridge. Measures C, R & L. Resistance from 0.001 ohm to 11M ohms. Capacitance from 1pF to 1100 µF. Inductance from 1 µH to 1100 Henry. Internal oscillator operates at 1 KHz, external from 20 Hz to 20 KHz. Requires four "D" cells for internal power. Works fine. Some corrosion on battery cover.

• Dimensions: 12-3/4" x 12-1/2" x 7-3/4"
• Weight: 17 lbs
 
 
$350
 

General Radio 1021-A
Standard Signal Generator
(EQP) GR1021P2-P1
General Radio 1021-A standard signal generator. 250 - 920 MHz, 0.5 µV to 1 volt output at 50 ohms. 0 - 50% AM modulation. Operates on 115 or 230 vac, 50 / 60 Hz, 50 watts. Output via 874 connector. Line cord not included. 14-3/8"H x 20-1/4"W x 10-7/16"D.
 

General Radio 583A
Audio Wattmeter
(EQP) GR-583A
General Radio 583A audio wattmeter. 5 mW full scale. 2.5 to 20,000 ohms impedance. In fair condition. First designed in 1933.
$350 each
 
$150 each

General Radio 1218-A
Unit Oscillator

(EQP) GR1218-A
General Radio 1218-A unit oscillator. 900 MHz to 2 GHz. Output: 110 mW to 160 mW into 50 ohm load. Requires 300 vdc @ 70 ma and 6.3 vac @ 1 amp. Power cable connector is removed. 12" x 7-5/8" x 7-1/2". NSN: 6625-00-674-3284. Sold as-is.
 

General Radio 1654
Impedance Comparator

(EQP) GR-1654/1782
General Radio 1654 impedance comparator with 1782 analog limit comparator. Indicates difference in magnitude and phase angle between two external impedances, usually a standard and an unknown. 1782 Analog Limit Comparator gives Go / NoGo indication when sorting parts for within tolerance values of resistance, capacitance and inductance. 12" x 19-1/2" x 15". NOTE: For parts only. Missing inter-connecting cables and fuseholder caps. No power cords. One knob missing cover. Sold as-is.
$95
 
$195

General Radio 1925-9700
1/3 Octave Filter Unit
(EQP) GR-1925
General Radio 1925-9700 1/3 octave filter unit. 30 "6 pole" Butterworth filters. ±25 dB in 1 dB steps for each filter. Graphic display of each filter setting. Common gain control adjusts overall output between +6 dB to -12 dB.
 

General Radio
107L Variable Inductor

(EQP) GR-107L
General Radio 107L variable inductor. 0.8 mH to 5.2 mH. 15 watts maximum power. 6-1/2" x 6-1/2" x 8-3/4"H.
$125
(EQP) GR-107M
General Radio 107M variable inductor. 8 mH to 52 mH. 15 watts maximum power. 6-1/2" x 6-1/2" x 8-3/4"H.
$125
(EQP) GR-107J
General Radio 107M variable inductor. 7 µH to 54 µH. 15 watts maximum power. 6-1/2" x 6-1/2" x 8-3/4"H.
$500
 
$125

General Radio 1558-A
Octave Band Noise Analyzer

(EQP) GR1558A
General Radio 1558-A octave band noise analyzer. 11 frequency bands from low to 75 Hz to 9600 - 19.2 KHz plus all pass. 44 to 150 dB input range. In fair condition. Battery accepts charge, unknown life. Service tag notes: "Will not calibrate". Sold as-is. No accessories available. 7-5/16" x 9-1/4" x 8-3/8".
$125
 
 

General Radio
Random Noise Generator

(EQP) GR1390-B
General Radio 1390-B random noise generator. 3 ranges. Output from 0.1 mV to 1v. 105 - 125 / 210 - 250 vac power input. 50 - 400 Hz. 12-3/4" x 9-3/4" x 7-1/2"H. No line cord. Appears to work. NSN: 6625-00-799-8999.
$85
(EQP) GR1390-B-RM
General Radio 1390-B random noise generator rack mount version of the above unit.
   
$95

General Radio 1234
SWR Meter

(EQP) GR1234
General Radio 1234 SWR meter. Appears to work but crack in meter cover. One nut and spacer missing on handle. 115 or 220 vac, 50/60 Hz power required. No accessories supplied. 7-15/16" x 9-1/4" x 8-3/8".

SWR Ranges:
• 1 - 1.05
• 1 - 1.2
• 1 - 4
• 3.2 - 10
• 10 - 40
 

General Radio
Decade Resistor
(EQP) GR1433-9723
General Radio decade resistor. 6 dials. 0.1 ohm steps. Maximum resistance = 11,111.1 ohms. 17.3" x 3.5" x 5" deep. Weighs 4.5 lbs. Brand new in the original box!!
$250
 
*** SOLD OUT ***
 

General Radio
Sweep Frequency Reflectometer

(EQP) GR1641
General Radio sweep frequency reflectometer. 20 -1500 MHz. Excellent condition.
 

General Radio
0 - 20 dB Potentiometer
(EQP) GR1521-P1
General Radio 0 - 20 dB potentiometer for use with 1521-B Graphic Level Recorder. 5-1/2"W x 4-1/2"D x 2-3/4"H. 4 pin plug-in. NSN: 5905-448-5331. New, unused.
$1,975
 
$35 each

Standard Air Capacitor
0.01 pF / 0.3%
(EQP) GR1403-R
General Radio standard air capacitor. 0.01 pF, 0.3%, 1500v max peak. "GR" connectors. 3"D x 3-3/4"H. Brand new in the box!! Only one available.
 

Standard Air Capacitor
0.1 pF / ±0.1%
(EQP) GR1403-N
General Radio standard air capacitor. 0.1 pF, ±0.1%, 1500v max peak. "GR" connectors. 3"D x 3-3/4"H. Brand new in the box!! Only one available. NSN: 6625-804-9053.
$85
 
$85

Standard Air Capacitor
1000 pF / ±0.1%
(EQP) GR1403-A
General Radio standard air capacitor. 1000 pF, ±0.1%. "GR" connectors. 3"D x 4-1/4"H. Brand new in the box!! Only one available.
 

General Radio
Inductance Standard
(EQP) WBM106M
General Radio inductance standard. Calibrated to 1.1 Henry. 150ma max. 6" x 6" x 6-1/2".
$85
 
$95

General Radio GR-1140A
UHF Wavemeter

(EQP) GR-1140A
General Radio GR-1140A UHF wavemeter. 250 MHz to 1200 MHz. Butterfly capacitor and inductor thru a IN22 diode to a 200 µA meter.
 

General Radio 1450-TAR
Decade Attenuator
(EQP) GR1450-TAR
General Radio 1450-TAR Decade Attenuator. 1 dB to 110 dB in 1 dB steps. 600 ohms, 1 watt maximum, ±1%, 0 - 1 MHz. 19" x 12-1/2" x 5-3/4".
$155
 
$249

General Radio 600 Ohm
Step Attenuator
(EQP) GR1450-TB
General Radio 600 ohm Step Attenuator. 0 - 111 dB in 0.1 dB steps. Maximum 1 watt audio. 11" x 5-1/2" x 11". NSN: 5985-00-217-8581.
 

General Radio 1490-D
Decade Inductor
(EQP) GR1490-D
General Radio 1490-D Decade Inductor. 1 mH to 11.11 Henry in 1 mH steps. Tolerance less than 2%. One binding post insulator is cracked. 8-1/2" x 4-1/4" x 15-3/8". NSN: 6625-00-553-7655.
$195 each
 
$450 each

General Radio 1432-Q
Decade Resistor
(EQP) GR1432-Q
General Radio 1432-Q decade resistor. Four dials, 100 ohm steps. 100 - 1.111 Meg. 100k ohm range: 2.3 ma, 10k ohm range: 7 ma, 1k ohm range: 23 ma, 100 ohm range: 80 ma. Dimensions: 4-1/4" x 12-1/2" x 3-1/2".
 

Trombone Setter
0 - 50 cm Constant Impedance
(RF) 011-001
Bishop Instruments trombone setter. 0 - 50 cm constant impedance. Alt. P/N: 933-8150. General Radio P/N: 874-LTL.
$295 each
 
$150 each

General Radio 1423-A
Decade Capacitor
(EQP) GR-1423-A
General Radio 1423-A Decade Capacitor. 100 pF to 1.111 µF in steps of 100 pF. 0.005% accuracy. 19" x 7-1/4" x 10-1/2".
 

General Radio 1217-B
Unit Pulse Generator
(EQP) GR-1217-B
General Radio 1217-B Unit Pulse Generator. Pulses from 2.5 Hz to 500 KHz with calibrated points in a 1 - 3 sequence from 10 Hz to 300 KHz, ±5%. Power supply not included. Requires 300v @ 55 ma and 6.3v @ 2 amp. One binding post insulator is missing. Sold as-is. 10-1/4" x 5-3/4" x 6-1/2"D.
$595
 
$50

General Radio 1652-A
Resistance Limit Bridge
(EQP) GR-1652-A
General Radio 1652-A Resistance Limit Bridge. 1 ohm to 1,111,111 ohms with internal standard. 1 ohm to 2 Meg ohm with external standard. Operates on 105 - 125 vac, 60 Hz, 30 watts. 19" x 8-3/4" x 12-1/4".
 

General Radio 1023-A
Amplifier Modulator
(EQP) GR-1023-A
General Radio 1023-A Amplifier Modulator. Fair to poor condition. Sold as-is.
$295
 
$39

General Radio 1236
30 MHz IF Amplifier
(EQP) GR-1236
General Radio 1236 30 MHz IF Amplifier. Selectable, 0.5 MHz and 4 MHz bandwidth. Operates on 105 - 125 / 195 - 235 vac. Power cord not included. 8" x 7-3/8" x 8".
 

General Radio 1363
Unit Oscillator
(EQP) GR-1363
General Radio 1363 Unit Oscillator. 56 MHz to 500 MHz. 200 mW into 50 ohms. Attached to 1236 IF Amplifier. 16" x 7-3/8" x 8".
$175 each
 
$375

General Radio 1203B
Unit Power Supply
(EQP) GR1203B
General Radio 1203B unit power supply. Supplies 300 vdc @ 50 ma, 6.3v @ 3 amps. Has standard General Radio 4 pin female power connector on side. 5" x 5-3/4" x 6-1/4". Works fine.
 

General Radio 874-VC
Variable Capacitor
(EQP) GR-874-VC
General Radio 874-VC Variable Capacitor. 14 - 70 pF. In the original box.
$100
 
$95

General Radio 1269-A
Power Supply
(EQP) GR1269A
General Radio 1269-A power supply. Output 300 vdc @ 50 ma and 6.3v @ 3 amps. Has standard General Radio 4 pin female power connector on side. 4-1/4" x 7-5/8" x 9-1/4". Power switch broken in the on postition. Works fine.
 

General Radio 857A
UHF Oscillator
(EQP) GR-857A
General Radio 857A UHF oscillator. 100 MHz to 500 MHz. 1/2 watt output. Requires 350 vdc @ 50 ma and 2.5v @ 3.65 amp power supply (not included). 6-7/8" x 7-5/8" x 7-1/4". Weighs 7 lbs.
$45
 
$45

General Radio
Standard Inductors
(EQP) GR-1482-D
General Radio 1423-D Standard Inductor. 500 µH, 0.1%. Resonant frequency 960 KHz DC resistance, 0.38 ohm. 6-1/2" x 6-1/2" x 8".
  (EQP) GR-1482-C
General Radio 1482-C Standard Inductor. 200 µH, ±0.25%. Resonant frequency 1400 KHz. DC resistance 0.15 ohms. 6-1/2" x 6-1/2" x 8".
$249
(EQP) GR-1482-E
General Radio 1482-E Standard Inductor. 1 mH, ± 0.1%. Resonant frequency 800 KHz. DC resistance 0.84 ohms. 6-1/2" x 6-1/2" x 8".
$249
(EQP) GR-1482-P
General Radio 1482-P Standard Inductor. 1 Henry, 0.1%. Resonant frequency 14.6 KHz. DC resistance 616 ohms. 6-1/2" x 6-1/2" x 8".
$249
 
$249

Standard Capacitor
500 pF
(EQP) GR-505-E
General Radio standard capacitor. 500 pF (500 µµF).
 

Standard Capacitor
0.001 µF
(EQP) GR-505-F
General Radio standard capacitor. 0.001 µF.
$35 each
 
$35 each

Standard Capacitor
0.01 µF
(EQP) GR-505-L
General Radio standard capacitor. 500 pF (500 µµF).
 

Crystal Diode Modulator
20 - 1000 Mc / 50 Ohms Input - Output
(EQP) GR-1000-P6
General Radio crystal diode modulator. 20 - 1000 Mc. 50 ohms input / output. Bias 4 volts max.
$35 each
 
$75 each
 
SSL