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* [[Media:GRwiki 1234 SWR Meter 1234-0100-A 1968.pdf|General Radio 1234 Standing-Wave Meter 1234-0100-A 1968]] | * [[Media:GRwiki 1234 SWR Meter 1234-0100-A 1968.pdf|General Radio 1234 Standing-Wave Meter 1234-0100-A 1968]] | ||
{{Catalog History}} | |||
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The '''General Radio 1234 Standing-Wave Meter''' was introduced in {{Catalog T}} and remained available through {{Catalog 1978}}. | The '''General Radio 1234 Standing-Wave Meter''' was introduced in {{Catalog T}} and remained available through {{Catalog 1978}}. | ||
Revision as of 01:38, 4 April 2024
The General Radio 1234 Standing-Wave Meter was introduced in Catalog T (1968) 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.
