General Radio Equipment

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.
$650 each

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
 
*** SOLD OUT ***
 

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-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.

*** SOLD OUT ***

(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

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 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
 
*** SOLD OUT ***

 

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".
 
 
$295
 

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". Does not work, has cracked meter face, missing fine adjustment knob, and rubber foot.
 

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".
$100 each
 
$375

General Radio
Inductance Standard

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

General Radio 874-VC
Variable Capacitor

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

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-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

 
$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