General Radio

General Radio Company (GenRad) (→ WikiData) was a manufacturer of electronic test equipment in Massachusetts, U.S. from 1915 to 2001.

On June 14, 1915, Melville Eastham and a small group of investors started General Radio Company in Cambridge, Massachusetts.

The company produced extensive lines of electrical component measuring equipment, sound and vibration measurement equipment, strobe lights, RLC and frequency standards, etc.

In the 1950s, the company moved to West Concord, Massachusetts, and eventually became a major player in the automatic test equipment (ATE) business, manufacturing a line of testers for assembled printed circuit boards.

In 1975, the company name was changed to GenRad.

The company was eventually acquired by Teradyne in 2001. IET Labs, Inc. purchased the instrumentation product lines.

Links

• The General Radio Company. General Radio Experimenters Volume XV No.1, June 1940 (25 year anniversary edition)
• Wikipedia: General Radio

Products

Products by General Radio

Model	Class	Series	Description	Designers	Introduced
1000-P10	generators	1000	Shielded Test Loop		1951
1000-P6	generators	1000	Crystal diode modulator		1951
1000-P7	generators	1000	Balanced modulator		1954
1001-A	generators		Standard signal generator		1951
1003	generators		Standard signal generator	Rudi Altenbach	1968
1021-A	generators	1021-A	Standard signal generator		1951
1021-P1	generators	1021-A	Power supply		1951
1021-P2	generators	1021-A	Standard signal generator		1951
1021-P3B	generators	1021-A	Standard signal generator		1954
1025-A	oscillators		Sweep generator	W. F. Byers • Eduard Karplus • E. Favre • D. Foss • W. Montague	1963
107	inductance standards	107	Variable Inductor		1916
107-J	inductance standards	107	Variable Inductor		1932
107-K	inductance standards	107	Variable Inductor		1932
107-L	inductance standards	107	Variable Inductor		1932
107-M	inductance standards	107	Variable Inductor		1932
107-N	inductance standards	107	Variable Inductor		1932
1114-A	frequency standards and meters	1114	Frequency Divider		1961
1123-A	frequency standards and meters		Syncronometer		1965
1124	frequency standards and meters		Time signal receiver		1968
1134-A	frequency standards and meters		Analog to digital converter		1961
1140-A	frequency standards and meters		UHF Wavemeter		1948
1142-A	frequency standards and meters		Frequency meter and discriminator		1961
1150-B	frequency standards and meters		Digital frequency meter		1965
1153-A	frequency standards and meters		Digital frequency meter		1965
1156-A	frequency standards and meters		Decade scaler		1965
1157-B	frequency standards and meters		500 MHz scaler		1970
1192-B	frequency standards and meters	1192	Counter		1973
1192-Z	frequency standards and meters	1192	Counter		1973
1201-B	power supplies	1201	Unit Regulated Power Supply		1959
1201-C	power supplies		Unit Regulated Power Supply		1965
1203-B	power supplies		Unit Power Supply		1956
1205-B	power supplies		Adjustable power supply		1959
1206-B	detectors amplifiers		Unit Amplifier		1954
1208-B	oscillators	1208	Unit Oscillator		1956
1208-C	oscillators		Unit oscillator		1963
1209-BL	oscillators	1209	Unit Oscillator		1959
1209-C	oscillators		Unit oscillator		1963
1210-C	oscillators		Unit oscillator		1959
1211-B	oscillators	1211	unit oscillator		1956
1211-C	oscillators		Unit oscillator		1963
1212-A	detectors amplifiers	1212	Unit Null Detector		1954
1212-P2	detectors amplifiers	1212	One Megahertz Filter		1956
1213-D	frequency standards and meters		Unit time/frequency calibrator		1961
1214-A	oscillators	1214	Unit Oscillator		1951
1214-AS2	oscillators	1214	Unit Oscillator		1956
1214-D	oscillators	1214	Unit Oscillator		1959
1214-E	oscillators	1214	Unit oscillator		1959
1214-M	oscillators	1214	Unit oscillator		1959
1215-B	oscillators	1215	Unit Oscillator		1956
1215-C	oscillators		Unit oscillator		1963
1216-A	amplifiers and detectors		Unit IF amplifier		1954
1217-A	generator	1217	Unit Pulser		1954
1217-C	generators	1217	Unit Pulse Generator		1965
1217-P2	Generators	1217	Single-Pulse Trigger		1963
1218-A	oscillators	1218	Unit Oscillator		1959
1218-B	oscillators		Unit oscillator		1965
1219-A	generators		Unit Pulse Amplifier		1956
1220-A	oscillators	1220	Unit klystron oscillator		1956
1220-A1	oscillators	1220	Unit klystron oscillator		1956
1220-A2	oscillators	1220	Unit klystron oscillator		1956
1230-A	meters		Electrometer and DC amplifier		1956
1230-P1	meters	1230	Component Shield		1956
1231-B	detectors amplifiers	1231	Amplifier and Null Detector		1948
1231-P4	amplifiers and detectors	1231	adjustable attenuator		1951
1231-P5	detectors amplifiers	1231	Adjustable Filter		1951
1232-A	amplifiers and detectors		Tuned amplifier and null detector	Albert E. Sanderson • Henry P. Hall	1961
1232-P1	detectors amplifiers	1232	RF Mixer		1963
1234	amplifiers and detectors		Standing-wave meter		1968
1236	amplifiers and detectors		IF amplifier		1968
1240-A	detectors amplifiers		Bridge Oscillator-Detector		1965
1261-A	power supplies		power supply		1948
1263-A	power supplies	1263	Amplitude-Regulating Power Supply		1956
1263-C	power supplies	1263	Amplitude-regulating power supply		1968
1264-A	power supplies	1264	Modulating power supply		1961
1267-B	power supplies		Regulated Power Supply		1968
1269-A	power supplies		Power Supply		1963
1302-A	oscillators		Oscillator		1948
1304-B	oscillators		Beat frequency oscillator		1954
1307-A	oscillators		Transistor Oscillator		1954
1309-A	oscillators		Oscillator		1968
1310-A	oscillators		Oscillator		1965
1311-A	oscillators		Audio oscillator		1963
1330-A	oscillators		Bridge Oscillator		1951
1360-B	oscillators		Microwave oscillator		1965
1361-A	oscillators		Oscillator		1961
1363	oscillators		VHF oscillator		1968
1382	generators		Random-noise generator		1968
1390-B	generators		Random noise generator		1961
1394	generators	1394	Hi-Rate Pulse Generator		1968
1394-P1	generators	1394	Pulse-Offset Control		1968
1396-A	oscillators		Tone-burst generator		1965
1398-A	generators		Pulse generator		1965
1401	capacitance standards	1401	Standard Air Capacitor		1951
1401-A	capacitance standards	1401	Standard Air Capacitor		1951
1401-B	capacitance standards	1401	Standard Air Capacitor		1954
1401-C	capacitance standards	1401	Standard Air Capacitor		1954
1401-D	capacitance standards	1401	Standard Air Capacitor		1954
1404-A	capacitance standards	1404	1000pF Reference Standard Capacitor		1963
1404-B	capacitance standards	1404	100pF Reference Standard Capacitor		1965
1404-C	capacitance standards	1404	10pF Reference Standard Capacitor		1968

More...