358: Difference between revisions

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The {{Title|General Radio 358 Amateur Band Wavemeter}} was introduced in {{Bulletin 926}} and remained available through {{Catalog K1}}.
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==