[ICOM] 765 receive problem

[W7RY]

I see that now... I should have read all the way!
73 and let us know how you do.

Jim W7RY


-----Original Message-----
From: Glen Rosenthal [mailto:n0nr at hotmail.com] 
Sent: Saturday, January 21, 2006 10:06 AM
To: w7ry at centurytel.net
Subject: RE: [ICOM] 765 receive problem

Jim
Thanks for your quick reply.
I did check that, but forgot to mention it - t does do it on all bands


>From: "W7RY" <w7ry at centurytel.net>
>Reply-To: ICOM Reflector <icom at mailman.qth.net>
>To: "'ICOM Reflector'" <icom at mailman.qth.net>
>Subject: RE: [ICOM] 765 receive problem
>Date: Sat, 21 Jan 2006 09:54:38 -0800
>
>Sounds like you have defective VCO capacitors. I bet it does not do it
>on all bands?
>
>73
>Jim W7RY
>
>
>-----Original Message-----
>From: icom-bounces at mailman.qth.net
[mailto:icom-bounces at mailman.qth.net]
>On Behalf Of Glen Rosenthal
>Sent: Saturday, January 21, 2006 9:29 AM
>To: icom at mailman.qth.net
>Subject: [ICOM] 765 receive problem
>
>There's a problem with the receiver in my 765 that is somewhat
>perplexing
>and it is more noticeable on CW, especially when the CW narrow filter
is
>
>selected and moreso when the 250Hz filter is selected during the first
>20
>minutes or so of warm-up. It is barely noticeable when in one of the
>sideband modes.
>
>For lack of a better description, it sounds as though the IF shift is
>changing by itself in a warbling fashion. When this is occurring, I can
>turn
>the IF Shift knob to duplicate the sound and the effect it has on the
>desired signal in the passband. It does not mitigate the problem. It
>happens
>whether or not the PBT mod is engaged or disengaged by way of the IF
>Shift
>button. When this is occurring, the unit will not receive briefly, then
>it
>pops back to normal. After about 20 minutes or so of warm up, the
>receiver
>performs perfectly. When the unit is first turned on after it's been
>powered
>down for the night, it does not happen - only during the warm up
period.
>
>The receiver is perfectly aligned to specifications, the trimmer caps
>have
>been replaced, and the PBT mod has been done, but none of these has
>prevented the unit from doing this.
>
>I hope I've described this accurately enough to get some direction as
to
>
>where to look.
>
>Thanks for any suggestions.
>
>Glen
>
>
>----
>Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
>Icom Users Net: Sundays, 1700Z, 14.316 MHz
>Icom FAQ: http://www.qsl.net/icom/
>
>----
>Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
>Icom Users Net: Sundays, 1700Z, 14.316 MHz
>Icom FAQ: http://www.qsl.net/icom/