[Hallicrafters] SX-42 problem

[Al Parker]

Hi Bob,
    The bandspread cap is at a "funny" posn at "rest," not at one end I
don't think.  I'll have to dig into my note on that, will later tonite,
it's easy to get it screwed up if the dial cords have been broken.  i'll
get bk to you.  Also you need to be sure you've got the osc. on the right
side of the received freq., but I think it's almost impossible for that to
happen on the bc band.  I've had similarproblems on an SX-42 - but they're
neat when right.
73,
Al, W8UT
New Bern, NC
BoatAnchors appreciated here
http://www.thecompendium.net/radio/
http://www.hammarlund.info

----- Original Message ----- 
From: "Robert Byrnes" <rbyrnes at pacbell.net>
To: <hallicrafters at mailman.qth.net>
Sent: Sunday, June 20, 2004 12:10 PM
Subject: [Hallicrafters] SX-42 problem


> I have been working on restoring an SX-42 that had been worked on by
> someone else. I have got it working but I am having a problem with the
> RF alignment.
> The low end of all of the bands will fall in very close but the high end
> of all bands is way off. For example, on the BC band 600 khz falls in
> nicely but at 1500 khz  I will pick up a station transmitting at 1320
khz.
> The high frequency trimmer will adjust the upper end but only about 10%
> of what is needed. If I move the bandspread off of zero the high end
> starts to come down. When the bandspread gets to 70 on the dial all
> bands seem very close at the high end.
> At this point I have stopped.
> I don't know if the problem is a bad componet, an alignment problem of
> the bandspread assembly, or something the previous owner did.
> I could not find a production run number to use the correct schematic. I
> was told that it was stamped "inside the chassis" but I did not find it.
> I would appreciate any comments or information.
> Bob ke6mtt
>
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