The General Radio 1232-A Tuned Amplifier and Null Detector was introduced in 1961 Catalog Q and remained available through Catalog 1978.

General Radio 1232-A
tuned amplifier and null detector
General Radio 1232-A Tuned Amplifier and Null Detector

Available from 1961 to 1978+

Manuals


Specifications

  • Frequency Response:
  • Tunable Filters: 20 Hz to 20 kHz in 3 ranges; 5% bandwidth; 2nd harmonic at least 34 dB down from peak, 3rd at least 40 dB down.
  • 50 kHz and 100 kHz Filters: 2nd harmonic 44 and 53 dB down, respectively.
  • Flat Response: ±3db 20 cps to 100 kc.
  • Input Impedance: Approximately 50 kΩ at maximum gain, varies inversely with gain to 1 MΩ at minimum gain.
  • Gain: 120 dB on the tunable ranges; 100 dB, flat range; 106 dB at 50 kHz; 100 dB at l00 kHz position.

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