[Icom] Article on improving IC-765 AGC/Audio

Wed, 3 Apr 2002 11:22:58 -0500

Tony,

Was this mod worth while? Did you notice any improvement?
My 765 has a serial number of >4000 so it's a later edition. Some of the mods have
been incorporated in the later models.
Regards,
John
K1JEB

> -----Original Message-----
> From:	Tony Hwang [SMTP:[email protected]]
> Sent:	Wednesday, April 03, 2002 10:37 AM
> To:	[email protected]
> Subject:	Re: [Icom] Article on improving IC-765 AGC/Audio
> 
> Hi, Bob
> That is very simple mod. Changing some RC timing constant on AGC and 
> one cap. change(the audio coupling cap, in the audio amp section).
> I found out the values does not have to be exact.
> In my case, I changed the value of R440 to 470 Ohm, C280 to 0.66 mF,
> C300 to 1.39 mF. Also if your R85 is 10K Ohm, change it to 4.3 K Ohm to
> increase the sidetone level.
> That's it. 
> 73,
> Tony, VE6CGX
> P.S. My old 765 has all the mod. that I know of. In every day use.
>  
> 
> 
> 
> 
> [email protected] wrote:
> > 
> > In the Dec 1995 issue of QST there was a Technical Correspondence article
> > titled, "Modifying the ICOM IC-765 for Better-Sounding Audio and Smoother AGC
> > Performances".
> > 
> > Anyone here have a copy of that they can share with me?
> > Tnx!!
> > 
> > 73,
> > 
> > Bob K8IA
> > Michigan USA
> > 
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> > Your Moderator: Dick Flanagan W6OLD, [email protected]
> > Icom FAQ: http://www.qsl.net/icom/
> ----
> Your Moderator: Dick Flanagan W6OLD, [email protected]
> Icom FAQ: http://www.qsl.net/icom/

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