<!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN">
<HTML>
<HEAD>
<META content=text/html;charset=iso-8859-1 http-equiv=Content-Type>
<META content='"MSHTML 4.72.2106.6"' name=GENERATOR>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT color=#000000 size=2>Just bought a SB-104. It has been sitting
up a while and needs some attention. Got the CW working OK. The
audio has some distortion in it. The only mic I had was an old Turner
+3. Tried all setting but can not get the distortion out. Sound
sorta like RF in the audio. Tried a shure handheld mic and same
result. Put a 470 pf accross the mic hot leads to suppress rf getting in,
no difference. Suspect a flaky cap in the audio. Any SWAGS
(scientific wild ass guess). Also need a extender board for it. Got
one? Thanks, Mitch AE4YW BTW: Was
going to order a set of caps from digikey for it, but the manual only gives the
capacitance and not the voltages. Have I got to go through the whole unit and
look up the working voltages on the caps? This is my first experience with
Heath and so far, I love the radio but their schematics and documentation is
below pitiful. It is amazing that anyone got the kits to work at
all. No voltages, inadequate parts lists with no crosses, no such thing as
a waveform or a P to P voltage. It appears that they intended for you to
send it to their repair center, as they seem to have witheld a lot of vital
information.</FONT></DIV></BODY></HTML>