[ICOM] IC-765 transmit audio problem
Dave K6DLW
k6dlw at charter.net
Sun Nov 16 10:50:38 EST 2008
Here is a link to the Icom web site for a similar problem.
http://www.icomamerica.com/en/support/kb/Article.aspx?ArticleNumber=5BBA592A68
I have VE3HUR's document and some other 765 doc's I can send you. Let me
know.
73
Dave K6DLW
----- Original Message -----
From: "Jack/W6NF" <vhfplus at bmg50.com>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Sunday, November 16, 2008 6:36 AM
Subject: [ICOM] IC-765 transmit audio problem
> Just in time for the SSB Sweepstakes (of course), and after not being used
> on SSB for a month or more, my '765 seems to have developed a transmit
> audio problem. To get any RF output with modulation the mic gain control
> must be turned up full resulting in only about 10 watts of RF output and
> almost no deflection of either ALC or compression meter positions. That
> amount of output requires almost hollering into the mic! With
> computer-generated audio being fed into the audio input port on the DIN
> connector on the rear apron the output power is normal. I have tried a
> second microphone with the same results.
>
> I've seen similar symptoms in broadcast audio gear when electrolytic
> coupling capacitors age and dry out but since I have no service manual or
> schematic on this rig I don't know if that is possible in the '765. Has
> anyone seen similar symptoms and come to any diagnosis?
>
> Thanks,
>
> Jack, W6NF
> ----
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