© Southeastern Antique Radio Society
Southeastern Antique Radio Society
Show n Tell
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Mark’s fine craftsmanship
         Great examples of permiability tuning.
                   A ferrite ‘slug’ tunes a coil.
Jim’s presentation of the first means of
measuring frequency. It represents a
mechanical hetrodyne oscillator.
Reed’s presentation of a test fixture to 
determine the performance of various
tubes. Here a 1619 is compared to an
antique # 45. Different adapters were 
tried to show the effects of bias on 
performance.
   Early voltmeter