[ICOM] Icom 765 questions

[glkrul]

Adam.
There are two very good links on your website regarding the 765 trimmer 
problems.
One from Don,ve6hur,the other one is from Rich ka8okh called IC-765 repair 
notes.
I used the one from Rich,its a very good document.
Gerry ve6wg.


Subject: RE: [ICOM] Icom 765 questions


> Hi John,
>
> To address your questions:
>
> 1. I believe that later units were fitted with ceramic VCO trimmers. I had
> S/N 029XX, and as I recall it had the ceramic trimmers - but I could have
> been mistaken.
>
> 2. The IF Shift kluge, which was hastily implemented in response to a
> patent-infringement suit, switches out (bypasses) the 9 MHz IF filter and
> activates the IF Shift control when the [IF SHIFT] key is depressed. When
> the [IF SHIFT] key is not depressed, the 9 MHz filter is in the IF signal
> path, but the IF Shift control is inactive.
>
> The W2ISB PBT Mod reinstates PBT (as in the IC-761) when the [IF SHIFT] 
> key
> is not depressed. Depressing the [IF SHIFT] key bypasses the 9 MHz filter 
> as
> in an unmodified radio.  The PBT mod is considered a "must-do".
>
> Cheers for now, 73,
> Adam VA7OJ/AB4OJ
>
>
> -----Original Message-----
> From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] 
> On
> Behalf Of John Geiger
> Sent: Sunday, September 30, 2007 15:04
> To: ICOM Reflector
> Subject: [ICOM] Icom 765 questions
>
> I have 2 questions about the Icom 765 that I haven't found an answer to 
> yet:
>
> 1 Does it have the plastic trimmer caps problems that the earlier Icom 
> rigs
> suffered from?  I think I heard no, but am not sure.
>
> 2. QST mentions that when you use the IF shift, it takes the narrow CW
> filters out of line. Does this problem still occur if you mod the 765 for
> PBT instead of IF shift?  Is there another mod to keep this from 
> happening?
>
> 73s John AA5JG
> (ex: W5TD, NE0P)
> 6M WAS #1275, 6m VUCC #1260
> 2m VUCC #615, Satellite VUCC #129
>
>
>
>
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