W3FPR - Don Wilhelm wrote:
Other than a faulty solder connection or an incorrect resistor value
(R74, R75, R76, R77), I can think of only 2 things that might cause
the PreAmp to not work - T6 could be connected incorrectly or the
windings shorted together, or C146 may be faulty. Try tacking a 0.01
uF capacitor across R77 (bottom of the board) as a check for an open
C146 and if that doesn't fix things, try rewinding T6.
-----Original Message----- I just finished K2 #4901 and it works
great. The only thing I have a question on is the preamp setting.
When the annunciator is on over the preamp, it seems as though
background noise goes down and the signal strength is reduced.
Jim--
Definately what Don said. I was in exactly the same situation as you:
Margaret Leber wrote:
After reworking a couple of suspect joints in the preamp section and
removing and reinstalling T6, the preamp in K2 1641 is now working.
73 de Maggie K3XS
Editor, Phil-Mont Mobile Radio Club Blurb - http://www.phil-mont.org
Elecraft K2 #1641
--
-----/___. _)Margaret Stephanie Leber CCP, SCJP/"The art of progress /
----/(, /| /| http://voicenet.com/~maggie SCWCD/ is to preserve order/
---/ / | / | _ _ _ ` _ AOPA 925383/ amid change and to /
--/ ) / |/ |_(_(_(_/_(_/__(__(/_ K3XS / preserve change amid/
-/ (_/ ' .-/ .-/ ARRL 39280 /order."-A.N.Whitehead/
/________________(_/_(_/_______AMSAT 32844_/<[EMAIL PROTECTED]>/
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