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The '''General Radio 1234 Standing-Wave Meter''' was introduced in 1968 Catalog T and remained available through Catalog 1978.  
The '''General Radio 1234 Standing-Wave Meter''' was introduced in 1968 Catalog T and remained available through Catalog 1978.  


 
The Type 1234 Standing-Wave Meter is a low noise three stage tuned amplifier operating at a frequency 1 Khz.  Its designed to measure standing waves (maximums and minimums) when paired with a slotted line like [[874-LB]]. Either a crystal rectifier or a bolometer can be used as a detector. The panel meter is equipped with lamps at the far end of each scale to indicate which is in use. There are also ac and dc outputs for use with a recorder.


==Specifications==
==Specifications==

Revision as of 06:52, 16 March 2024

General Radio 1234
standing-wave meter
General Radio 1234 Standing-Wave Meter

Available from 1968 to 1978+

Manuals
(All manuals in PDF format unless noted otherwise)

The General Radio 1234 Standing-Wave Meter was introduced in 1968 Catalog T and remained available through Catalog 1978.

The Type 1234 Standing-Wave Meter is a low noise three stage tuned amplifier operating at a frequency 1 Khz. Its designed to measure standing waves (maximums and minimums) when paired with a slotted line like 874-LB. Either a crystal rectifier or a bolometer can be used as a detector. The panel meter is equipped with lamps at the far end of each scale to indicate which is in use. There are also ac and dc outputs for use with a recorder.

Specifications

  • Meter Scales VSWR: 1 to 4, 3.2 to 10, 1 to 1.2, and 1 to 1.05;dB, 0 to 10, 0 to 1.6, and 0 to 0.45;
  • Meter Scale Bolometer: current, 0 to 10 mA.
  • Meter Accuracy: 0 to 10 dB scale, ±(0.01 dB + 2% of reading);0 to 1.6 dB scale, ±0.02 dB; 0 to 0.45 dB scale, ±0.007 dB.
  • Bandwidth: 10 to 100 Hz, adjustable with constant gain.
  • Frequency: 1 kHz, adjustable ±30 Hz.

Links

Photos