1361-A

The General Radio 1361-A Oscillator was introduced in Catalog Q (1961) and remained available through Catalog 1973.

The Type 1361-A is a general-purpose, Colpitts-type oscillator covering 450 to 1050 MHz. It can be used to drive bridges, slotted lines, impedance comparators, and as a general purpose signal source.

Direct amplitude modulation at audio frequencies is provided by a front and side panel phone jack and with a 1000-P6 crystal-diode modulator accessory or a 1000-P7 balanced modulator.

Sweep frequency operation is provided by the Type 1750-A sweep drive or Type 907-R144 Dial Drive.

The recommended power supply is the Type 1203-B for basic operation, also available were the Type 1264-A Modulating Power Supply or Type 1263-B Amplitude-Regulated power supply. The power supply jumper socket must be in place when not in use.

Specifications

• Frequency Range: 450 to 1050 MHz
• Frequency Accuracy: ±1%
• Output Power (into 50 Ω): at least 125 mW with Type 1203-B Unit Power Supply,
• Attenuator Range: 80 dB with 5 dB scale divisions, relative attenuation

Links

• Experimenter describing Type 1361-A March 1961
• Sylvania 5675 Pencil Triode Datasheet December 1959
• 2367681 Patent for Butterfly Tuned Circuit
• Compatible with 908-P1 Synchronous Dial Drive

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