TICK Keyer Mod

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From: dolledb@cet.com
Date: Sat Feb 15 1997 - 14:57:05 EST


Fellow QRPers,

I'm putting the finishing touches on my NC38S (#47). Finally found all the
parts for the mods and am incorporating most of the fixes found on
the NorCal home page. I am somewhat confused by the "Mandatory Fix
Revisited" and "Correction" articles concerning the TICK telemetry
audio fix.

Brad, WB8YGG, suggests cutting the trace between R19 from C32 and
adding a new 4.7K resistor between C32 and the junction of R19-C34. This
effectively brings point "A" on the schematic to the junction of
R19-C34. In his "Correction" article, Bob, AB7ST, believes that
Brad's instructions should read "Cut the trace between C32 and R17,
connect the NEW resistor between the side of C32 you just cut, and
the C34 side of R19.... " This potentially removes C33 and R18 from
the circuit depending on where the trace is cut. I believe that
"R17" in Bob's "Correction" is a typo and should read "R19."

Which version is correct? I would hate to cut the wrong trace.
Any help you experienced NC38S fanatics might have to offer
would be much appreciated. Thanks.

Dennis, NX5W


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