hi. i've got a hallicrafters sx-42 that has developed a strange s meter
problem.the receiver works on all bands but the s meter works normaly only
on the first 2 bands,broadcast band and band 2 (1.6 to 5 mc). when I switch to
band 3 (5
to 15 mc) and bands 4, 5 and 6 i hear signals but the s meter indicates zero.
occasionally
there will be a very slight negative indication with the needle moving below
the zero. it
must be getting ok avc on the first 2 bands but not on the others. does anyone
have any
suggestions?
73 ci


A possibility is that, due to a failure affecting the receiver circuitry
somewhere, your receiver has become extremely deaf on band 3 and up, so that
even the strongest signals do not move the S-meter, though they can still be
heard.

The fact that the S-meter gives a very slight negative indication may not mean
much, as it could just be a consequence of the same failure that makes the
receiver deaf on bands 3 and up.

You must exercise your judgement to determine whether on bands 3 and up the
problem is just in the fact that the S-meter does not move or that the receiver
instead becomes deaf. For this purpose, you could try to tune the same station
on the highest part of band 2 and in lowest part of band 3 (the two bands will
surely overlap somewhat) and, without looking to the S-meter, try to determine
whether the receiver sensitivity looks similar.

73

Tony I0JX
Rome, Italy