558-P: Difference between revisions

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{{GR Product
{{GR Product
|model=558-P
|model=558-P
|codes=UNION
|class=frequency standards and meters
|class=frequency standards and meters
|summary=frequency meter
|summary=Frequency meter
|image=GR 558-P Case Open.jpg
|image=GR 558-P Case Open.jpg
|caption=General Radio 558-P Amateur Band Frequency Meter
|caption=General Radio 558-P Amateur Band Frequency Meter
|series=
|series=558
|introduced=1930
|introduced=1930
|discontinued=1931
|discontinued=1931
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* [[Media:GR 558-P Instructions Form 16 500-9-25-29.pdf|558 Instruction Card 500-9-25-29]]
* [[Media:GR 558-P Instructions Form 16 500-9-25-29.pdf|558 Instruction Card 500-9-25-29]]
{{Catalog History}}
{{Catalog History}}
* [[Media:GRwiki Catalog F1 OCR 1930.pdf|F1 (1930)]], p.68
* [[Media:GRwiki Bulletin 933 OCR 1931.pdf|Bulletin 933 (1931)]], p.25
}}
}}
The '''General Radio 558-P Amateur Band Frequency Meter''' was introduced in 1930 Bulletin F1 and available through Bulletin 933 1931.  
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==
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* [[Media:GR Exp 558 03_1928.pdf|Experimenter describing Type 558 March 1928]]
* [[Media:GR Exp 558 03_1928.pdf|Experimenter describing Type 558 March 1928]]
* [[Media:GR Exp 558 03_1929.pdf|Experimenter describing Type 558 March 1929]]
* [[Media:GR Exp 558 03_1929.pdf|Experimenter describing Type 558-P March 1929]]


==Photos==
==Photos==
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GR 558-P Meter Interior.jpg
GR 558-P Meter Interior.jpg
GR 558-P Calibration Chart.png
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

General Radio 558-P
Frequency meter
General Radio 558-P Amateur Band Frequency Meter

Available from 1930 to 1931

Manuals
Catalog History
 Document Year Page
Catalog F1 1930 68
Bulletin 933 1931 25
(All manuals in PDF format unless noted otherwise)

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%

Links

Photos