[Hallicrafters] Seco S Meter

[William D Dunkelberger]

Hi All,

        A few years back I bought a very late SX-62A that had a Seco
Model 540 External S meter wired into it.  I later sold the radio but
kept the S meter.  When I removed it I didn't make any notes where it was
hooked up in the radio (dumb idea!).  A brief description of the 540.  It
has an edgewise S meter with 2 pots (zero and sensitivity) on the top of
a small mini-box.  It use a single C cell and 1 transistor (Hitachi
2SA17) It has 2 leads running to a small (44 or 47) pilot lamp to light
up the meter and a 3 wire cable with 2 conductors and a shield.  The
shield is soldered to the back of the zero pot for common grounding. 
Here is the question: where do the other 2 wires connect in a radio? 
Anyone out there have one of these or any hookup info in their archives? 
I'd like to add this to my recently restored SX-62A.  Thanks for any
input.
 
73, David
W9CTJ since 1961
VIntage Radios Redone and Operated!

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