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{{GR Product
{{GR Product
|model=358
|model=358
|codes=UPPER
|class=frequency standards and meters
|class=frequency standards and meters
|summary=amateur band wavemeter
|summary=Wavemeter
|image=GR 358 Case Open B.jpg
|image=GR 358 Case Open B.jpg
|caption=General Radio 358 Amateur Band Wavemeter
|caption=General Radio 358 Amateur Band Wavemeter
Line 12: Line 13:
* '''Manual Needed'''
* '''Manual Needed'''
{{Catalog History}}
{{Catalog History}}
* [[Media:GRwiki Bulletin 926 Apparatus OCR 1924.pdf|Bulletin 926 (1924)]], p.9251
* [[Media:GRwiki Bulletin 930 OCR Apparatus 1928.pdf|Bulletin 930 (1928)]], p.9373
* [[Media:GRwiki Catalog E1 OCR 1928.pdf|E1 (1928)]], p.78
* [[Media:GRwiki Catalog E2 OCR 1928.pdf|E2 (1928)]], p.78
* [[Media:GRwiki Catalog F1 OCR 1930.pdf|F1 (1930)]], p.69
* [[Media:GRwiki Bulletin 933 OCR 1931.pdf|Bulletin 933 (1931)]], p.26
* [[Media:GRwiki Catalog G1 OCR 1932.pdf|G (1932)]], p.64
* [[Media:GRwiki Bulletin 936 OCR 1935.pdf|Bulletin 936 (1935)]], p.24
* [[Media:GRwiki Catalog H OCR 1935.pdf|H (1935)]], p.152
* [[Media:GRwiki Catalog J OCR 1936.pdf|J (1936)]], p.60
* [[Media:GRwiki Catalog K1 OCR 1939.pdf|K1 (1939)]], p.164
}}
}}
The '''General Radio 358 Amateur Band Wavemeter''' was introduced in 1924 Bulletin 926 and available through Catalog K1 1939.
The {{Title|General Radio 358 Amateur Band Wavemeter}} was introduced in {{Bulletin 926}} and remained available through {{Catalog K1}}.


The Type 358 is an absorption type wavemeter covering the four overlapping bands.  It has an frequency accuracy of 1% and uses an incandescent lamp as a resonance indicator.  The lamp is in a special socket that closes the connection when the lamp is removed if not needed. A Type [[247]] gear driven condenser is used inside the meter. Each wavemeter is supplied with a calibration chart produced with settings accurate for that particular meter.  
The Type 358 is an absorption-type wavemeter covering the four overlapping bands.  It has a frequency accuracy of 1% and uses an incandescent lamp as a resonance indicator.  The lamp is in a special socket that closes the connection when the lamp is removed if not needed.  
 
Each wavemeter is supplied with a calibration chart produced with settings accurate for that particular meter.
 
A [[247|Type 247]] gear-driven condenser is used inside the meter.  


==Specifications==
==Specifications==

Latest revision as of 17:53, 16 April 2024

General Radio 358
Wavemeter
General Radio 358 Amateur Band Wavemeter

Available from 1924 to 1939

Manuals
  • Manual Needed
Catalog History
 Document Year Page
Bulletin 926 1924 9251
Bulletin 930 1928 9373
Catalog E1 1928 78
Catalog E2 1928 78
Catalog F1 1930 69
Bulletin 933 1931 26
Catalog G1 1932 64
Bulletin 936 1935 24
Catalog H 1935 152
Catalog J 1936 60
Catalog K1 1939 164
(All manuals in PDF format unless noted otherwise)

The General Radio 358 Amateur Band Wavemeter was introduced in Bulletin 926 (1924) and remained available through Catalog K1 (1939).

The Type 358 is an absorption-type wavemeter covering the four overlapping bands. It has a frequency accuracy of 1% and uses an incandescent lamp as a resonance indicator. The lamp is in a special socket that closes the connection when the lamp is removed if not needed.

Each wavemeter is supplied with a calibration chart produced with settings accurate for that particular meter.

A Type 247 gear-driven condenser is used inside the meter.

Specifications

  • Frequency Ranges
  • Wavelength: 14 to 28 Meters, 26 to 56 Meters, 54 to 114 Meters, 105 to 220 Meters
  • Frequency: 10.0 to 20.0 MHz, 5.0 to 10.0 Mhz, 2.5 to 5.0 MHz, 1.5 to 3.0 MHz
  • Accuracy: 1%

Links

Photos

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