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USA: Radio Catalog for the radio manufacturer General Radio Company; Cambridge (MA)

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Model	Year	Category	Tubes	Pictures			Forum	Coll.Pr.
Audio Oscillator 1000 Hz 213-B	1920 ?	Equipment		4		5S		$
BC14A	1918	Crystal		15				$
Capacitance bridge 716-c	1946	Equipment		1		6S
Capacitance Bridge 1615-A	1964 ?	Equipment		2
Capacitance bridge 1617	1964 ??	Equipment		3		6S
Comparison Bridge 1604-B	1953–56 ?	Equipment		5		2S
Counter 1192B	1969	Equipment		1
Coupling Impedance 369	1926	Radio part		1
Decade Capacitor 1419-A	1965 ??	Equipment		3
Decade Inductor 1490-D	1968 ??	Equipment		3
Decade Inductor 1490F	1968 ??	Equipment		3
Decade Resistance Box 602-J	1931	Equipment		4
Decade Resistor 1432-U /-K /-J /-L /-Q /-T /-N /-M /-P /-Y /-X /-Z	1951 ?	Equipment		14		4S	1F	$
Decade Voltage Divider 1454-AH	1965 ??	Equipment		3		8S
Decade Voltage Divider 1455-B	1967 ??	Equipment		6
Doublet with ID=220944	9999 ?	Misc
Dublette mit ID=202993	9999	Radio part
Filter 247 (247-W)	1925	mod-pre26		1		4S
Filter Choke 366	1926	Radio part		2
Heterodyne Frequency Meter 620-A [Portable Model]	1937–53	Equipment		1		18S
Heterodyne Frequency Meter 620-A [Rack Model]	1937	Equipment		2		15S		$
Impedance-Measuring Circuit 821A	1955	Equipment		2		18S
Medium Frequency Transformer 271	1924	Radio part		1
Megohm Bridge 544-B	1937–61	Equipment		8		23S
Modulated Oscillator 684-A [Battery]	1937	Equipment		1
Modulated Oscillator 684A [AC supply]	1937	Equipment		1		1S
Output Meter 583-A	1945 ??	Equipment		6		5S
Oxide Rectifier 492A	1935 ??	Power-S		4
Precision Capacitor 722-D	1955 ??	Equipment		2		2S		$
Precision Condenser 2225	1935 ??	Equipment
Precision Decade Resistor 1433P	1970 ??	Equipment		1
Rectifier Transformer 365	1926	Radio part		2
Rheostat 301	1924	Radio part		1
Sound-Level Meter 1551-A	1950–56 ??	Equipment		1				$
Sound-Survey Meter 1555-A	1952	Equipment		7
Standard Capacitor 1401-D	1955 ??	Equipment		1
Standard Capacitor 1409-M	1955 ??	Equipment		1		1S
Standard Capacitor 1409-T	1965 ?	Equipment		3		1S
Standard Inductor 1481-K	1951 ?	Equipment		3
Standard Signal Generator 1021-A	1953 ??	Equipment		8		9S
Straightline Frequency Condenser 374	1925	Radio part		1
Straightline Wavelength Condenser 334	1925	Radio part		1
Test-Signal Generator 404	1930 ??	Equipment		2
Variable Air Capacitor 1602-P3	1959–65	Equipment		2
Variable Air Condenser	1922	Radio part		1				$
Variable Air Condenser 239-E	1925 ??	Radio part		3
Variable Air Condenser 539-B	1930 ??	Radio part		7				$
Variable Capacitor 722-DQ	1956	Equipment		5
Variable Capacitor 722-MD	1954	Equipment		3
Variable Condenser 247-H , 247-F	1924	Radio part		3				$
Variac 0-140V 5A	1955 ??	Power-S		6
Variac W5	1960 ??	Power-S		2		6S
Variac Autotransformer W5MT3	1960 ??	Power-S		7		6S
Vario Coupler Type 268	1924	Radio part		6		2S		$
Voltmeter Indicator 874-VI	1959–65	Equipment		2
Wavemeter 566-A	1935 ??	Equipment		3				$
874-VRL Voltmeter Rectifier	1955 ??	Equipment		1
Impedance Bridge 1650-A	1959 ?	Equipment	4	3		9S
Audio Oscillator 1311 (1311-A)	1962 ?	Equipment	8 - 2N1304	6		8S
Impedance Bridge 1656	1977 ?	Equipment	11	3		17S	1F	$
AC-Millivoltmeter Type 1808	1981 ??	Equipment	13	3		6S
Amateur Band Frequency Meter 558-P	1935 ??	Equipment		4
Audibility Meter Type 122	1919 ?	Equipment		1
Audio Oscillator 400 Hz 213-C	1930 ?	Military		5		1S
Audio Oscillator 813-A	1935 ?	Equipment		4		1S
Capacitance Measurement Bridge 1614-A	1948 ?	Equipment		1
Constant Impedance Audibility Meter Type 164	1919 ?	Equipment		1
Decade Capacitor Unknown	1962 ??	Equipment		3
Decade Resistance Box 102G	1924 ??	Equipment		5
Decade Resistance Box 602-D	1935 ??	Equipment		1
Decade Resistance Box 602-E	1935 ??	Equipment
Decade Resistance Box 602-F	1935 ??	Equipment		1
Decade Resistance Box 602-G	1935 ??	Equipment		1
Decade Resistance Box 602-K	1935 ??	Equipment		1
Decade Resistance Box 602-L	1935 ??	Equipment		1
Decade Resistance Box 602-M	1935 ??	Equipment		1
Decade Resistance Box 602-N	1935 ??	Equipment		9				$
Decade-Resistance Unit 510-AA /-A /-B /-C /-D /-E /-F /-G /-R	1951	Equipment		1		4S
Digibridge Remote Test Fixture 1689-9605	1984 ??	Equipment		2
Direct-Reading Wave-Meter Type 145	1919 ?	Equipment		1
Direct Reading Wave-Meter Type 174	1919 ?	Equipment		5		5S	1F
Direct-Reading Wavemeter 574	1925–42 ?	Equipment		5		2S
Distortion Factor Meter 536 A	1931 ?	Equipment		1
Doublet with ID=220944	9999	Misc
Dummy Antenna 418-B	1931	Misc		1		1S
Filter 1231-P5	1961	Equipment		5
Frequency Meter 434-B	1931	Equipment		1		2S
GR874 to BNC male adapter	1950 ??	Misc		2
IET Output Power Meter 1840-A	1962	Equipment		1		12S
Metered Variac Autotransformer W5MT3W	1960 ??	Power-S		4
Microphone Hummer (oscillator) 572-B	1933 ??	Equipment		3
Microwave Oscillator 1360-A	1962 ?	Equipment		1		20S
Output Meter Type 483-F	1948 ?	Equipment		3
Output Meter 483	1931 ?	Equipment		1
Output Power Meter 783A	1942	Equipment		1		7S
Phantom Antenna A 50	1919 ??	Equipment
Power Supply 1262-B	1968	Equipment		5		1S	1F
Precision Capacitor 722MEQ	1956 ?	Equipment		3
Precision Sound Level Meter 1981	1971 ??	Equipment
Precision Wavemeter 724-B	1950 ??	Equipment		9

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