558-P: Difference between revisions
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(Created page with "Type '''558-P Amateur-Band Wavemeter'''. ==Specifications== ==Links== ==Photos== <gallery> </gallery> Category:Frequency Standards and Meters") |
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{{GR Product | |||
|model=558-P | |||
|codes=UNION | |||
|class=frequency standards and meters | |||
|summary=Frequency meter | |||
|image=GR 558-P Case Open.jpg | |||
|caption=General Radio 558-P Amateur Band Frequency Meter | |||
|series=558 | |||
|introduced=1930 | |||
|discontinued=1931 | |||
|designers= | |||
|manuals= | |||
* [[Media:GR 558-P Instructions Form 16 500-9-25-29.pdf|558 Instruction Card 500-9-25-29]] | |||
{{Catalog History}} | |||
}} | |||
The {{Title|General Radio 558-P Amateur Band Frequency Meter}} was introduced in {{Catalog F1}} and remained available through {{Bulletin 933}}. | |||
The Type 558-P is an absorption type wavemeter which is identical to Type [[558]] except the neon resonance indicator has been discontinued. It retains the same five bands and 0.25% accuracy but resonance is determined by reaction of the device under examination. Each wavemeter is supplied with a calibration chart produced with settings accurate for that particular meter. An accessory low frequency coil is available as Type [[558-P6]]. If a [[558-P6]] coil is purchased separately your meter would have to be returned to the factory for calibration with that particular coil-meter combination. | |||
==Specifications== | ==Specifications== | ||
* '''Frequency Range:''' five bands, 3.5 to 4.0 MHz, 7.0 to 8.0 MHz, 14.0 to 16.0 MHz, 28 to 32 MHZ, 56 to 51 MHz | |||
* '''Frequency Calibration Accuracy:''' 0.25% | |||
==Links== | ==Links== | ||
* [[Media:GR Exp 558 03_1928.pdf|Experimenter describing Type 558 March 1928]] | |||
* [[Media:GR Exp 558 03_1929.pdf|Experimenter describing Type 558-P March 1929]] | |||
==Photos== | ==Photos== | ||
<gallery> | <gallery> | ||
GR 558-P Case.jpg | |||
GR 558-P Case Open.jpg | |||
GR 558-P Case Open Calibration.jpg | |||
GR 558-P Cover.jpg | |||
GR 558-P Coil Set.jpg | |||
GR 558-P Meter.jpg | |||
GR 558-P Meter Interior A.jpg | |||
GR 558-P Meter Interior.jpg | |||
GR 558-P Calibration Chart.png | |||
GR Condenser Brace Top.jpg | |||
GR Condenser Brace Bottom.jpg | |||
GR Condenser Brace Side.jpg | |||
</gallery> | </gallery> | ||
[[Category:Frequency Standards and Meters]] | [[Category:Frequency Standards and Meters]] | ||
Latest revision as of 23:54, 2 October 2024
The General Radio 558-P Amateur Band Frequency Meter was introduced in Catalog F1 (1930) and remained available through Bulletin 933 (1931).
The Type 558-P is an absorption type wavemeter which is identical to Type 558 except the neon resonance indicator has been discontinued. It retains the same five bands and 0.25% accuracy but resonance is determined by reaction of the device under examination. Each wavemeter is supplied with a calibration chart produced with settings accurate for that particular meter. An accessory low frequency coil is available as Type 558-P6. If a 558-P6 coil is purchased separately your meter would have to be returned to the factory for calibration with that particular coil-meter combination.
Specifications
- Frequency Range: five bands, 3.5 to 4.0 MHz, 7.0 to 8.0 MHz, 14.0 to 16.0 MHz, 28 to 32 MHZ, 56 to 51 MHz
- Frequency Calibration Accuracy: 0.25%
