HW 101 audio

[Mark Graalman WB8JKR]

  Fran,

  Assuming the rig is running properly, I just spent some
time with a HW-101 and the majority of the RX audio
problem is low BFO injection to the product detector
and high I.F. input to the product detector. Make the
following changes and you'll see a VAST improvement:

 Change C17 on the modulator board to a 100 pf S.M.
 Change R-123 on the I.F. board to to 150 ohms
 Change C-306 on the Audio circuit board to .01 ufd.
 Change R-113 on the I.F. board to 10 K ohm.

  These mods lower the I.F. drive to the product detector,
increase the BFO drive to the product detector and improve
low frequency response of the audio stage a bit.

  73,  Mark  WB8JKR


On Mon, 3 Sep 2001 16:04:18 EDT Fran Sanders Wa3Mrc <Elderjo355 at AOL.COM>
writes:
> Help  I've got the subject transceiver with the following problem.
> The audio
> is so harsh that it hurts your ears.  All else is fine and right up
> to snuff.
> I'm told that the transmit signal is fine. I have a lot of SB
> equipment but I
> just inherited this unit and I don't want to tear into it until I
> have tried
> the easy way. So, what say you guys. Any help     Fran  WA3MRC
>
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