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Antique Radio Technical Forum
Mystery item...Gen. Radio Frequency Meter type 558-P

Posted by Peter G. Balazsy on 04/08/2009 04:07

Probably works by zero-beating a local oscillator against the unknown frequency.
When you hear the zero beat you look at the knob setting of the local osc to determine the freq.. sometimes extrapolation is needed.

Today we are spoiled.. we just look at the number on the digital display on a freq counter and it reads the freq.



Mystery item...Gen. Radio Frequency Meter type 558-P 
G. Berg 04/08/2009 01:35 
Peter G. Balazsy 04/08/2009 04:01 
Peter G. Balazsy 04/08/2009 04:07 
Peter G. Bal;azsy 04/08/2009 04:19 
Peter G. Balazsy 04/08/2009 04:20 
you are a wise buyer 04/08/2009 12:03 
Jon 04/08/2009 12:51 
Lewis L 04/08/2009 15:08 
G. Berg.....WOW THANKS!! 04/08/2009 16:10 

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