[ICOM] IC-706MKIIG And Ambient Noise

[JerryM]

There is an internal RF gain section in mentioned the Service Manual. If
this section has been over-adjusted (or mis-adjusted at some point) I
imagine the noise floor would indeed be way up there. Perhaps one of the
techies can comment on that?

Jerry
WC8R/3
----- Original Message ----- 
From: "Ken, KA0W" <ka0w at msn.com>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Wednesday, June 16, 2004 8:05 PM
Subject: Re: [ICOM] IC-706MKIIG And Ambient Noise


> Doug,
>
> I don't have much of a noise problem with my new 706, except for the
> external sources that needed attention such as the fuel pump. The noise
> blanker does fairly well on most of the noise sources outside of my truck.
>
> Overall I am very happy with the performance of the 706 for mobile. I
> reduced the noise sources from the truck to that of being no concern via
> grounding and use of several split beads. I also do not use the preamp
> unless necessary, which is almost never.
>
> 73,
>
> Ken, KA0W
>
>
>
>
> ----- Original Message ----- 
> From: "Davies, Doug A FOR:EX" <Doug.Davies at gems3.gov.bc.ca>
> To: "'ICOM Reflector'" <icom at mailman.qth.net>
> Sent: Wednesday, June 16, 2004 10:44
> Subject: [ICOM] IC-706MKIIG And Ambient Noise
>
>
> > This may have been discussed before but I haven't seen it.  Has anyone
> > noticed that their IC-706MKIIG is very sensitive to ambient noise?  I
have
> > been fighting a noise problem with my mobile setup for the past year and
> > have determined that the majority of the problem lies with the radio
> itself.
> > In fact, when I'm driving, the 706 even picks up line noise just about
> > everywhere, even on VHF, with a noise level in excess of S-7 most of the
> > time.  As a test, I substituted my old IC-735 in the truck and most of
the
> > noise was gone.
> >
> > I have played with the DSP settings, filters, etc all with no success.
> I'm
> > wondering if I have a crappy radio or if this is common to the 706MKIIG.
> I
> > really like mobiling and am considering dumping the MKIIG if this
problem
> > can't be corrected. Your experiences with this would be appreciated.
> >
> > Doug  VA7DD
> > ----
> > 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/
>