[CQ-Contest] 756Pro Adjustments - Need some help

K1EP Ed k1ep at arrl.net
Sun Nov 12 20:12:31 EST 2000


I was preparing a station for SS to do SO2R and ran in to a problem with
the 756PRO.  The station originally had a 765 in it and I substituted the
PRO.  Most of the connections were fine, but the Top Ten Decoder had a
problem.  It uses the band output voltages from the ACC plug to determine
the band switching.  On the PRO, it wasn't switching properly.   I measured
the unloaded voltages from the PRO and they were about .4V or more low on
each band.  I don't have a service manual for the PRO, so does anyone out
there have one?  I would assume that there is either a trim pot to adjust
the entire range or individual trim pots to adjust each voltage for each
band.  Does anyone know where these trim pots are in the PRO?  

Ed K1EP



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