1220-A

The General Radio 1220-A Unit Klystron Oscillator was introduced in 1956 Catalog O and remained available through Catalog S 1965.

Specifications

• Frequency Range: Depends upon klystron tube used (refer to table below).
• Modulation Internal: Internal 1 kHz square wave, adjustable within +15 Hz.
• Modulation External: External square wave, 50 Hz to 200 kHz; sine or square-wave modulating signal of at least 15 V rms required.
• Modulation FM: at least 15 MHz excursion obtainable with less than 3 dB change in output; at 60 Hz, on rms input of about 10 V is suitable.

Klystron Oscillator Data

Type	Frequency Range	Tube	Output mW
1220-P1	2700-2960 MHz	726-C	100
1220-P2	2950-3275 MHz	6043	90
1220-P3	3400-3960 MHz	2K29	90
1220-P4	3840-4460 MHz	2K56	75
1220-P5	4240-4910 MHz	2K22	100
1220-P6	5100-5900 MHz	6115	80
1220-P7	5925-6450 MHz	QK404	100
1220-P8	6200-7425 MHz	5976	90

Links

• Experimenter describing Type 1220-A March 1956

Photos

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