[Icom] IC-2100H alternator whine problems

Fri, 10 May 2002 04:24:35 -0400

Gert:
Install a 1000 mfd capacitor at 25V across the 13.8V DC power line as close
to the new rig as possible.  In some of the older 2 meter rigs with more
room we could install that capacitor inside the rig right across the 13.8VDC
terminal to ground. That always worked for me in the past.   73's Don

----- Original Message -----
From: "Gert E. Janssens" <[email protected]>
To: <[email protected]>
Sent: Thursday, May 09, 2002 10:24 PM
Subject: [Icom] IC-2100H alternator whine problems

> Hello all,
>
> I am new to this list; or rather "new-again", as I resubscibed after
buying
> a new Icom, the IC-2100H. I must say it is a beauty. Everything I need
(and
> more) and extremely good audio, both receive and transmit. And at the
> current price I couldn't resist.
>
> However, I have a peculiar problem with it: for some reason it picks up a
> huge amount of alternator noise, and not only receives it but retransmits
it
> too.
>
> I had a Yaesu FT-1500M in the car before the Icom, but the 1500 was
> installed in my wife's car. That one does not have that problem; in fact I
> removed the 2100 today and put the 1500 back in to make sure. Didn't do
it,
> so I put the Icom back in and the noise was there again. I then put the
Icom
> in  my wife's car, and it also picks up the generator's noise there.
>
> I tried an in-line DC filter (Radio Shack) but that doesn't help at all.
> Checked all my cabling, even put on new connectors here and there, all to
no
> avail...
>
> What I haven't tried yet are those ferrite beads that are spoken of many
> times, because I simply don't know which ones to use and where to get
them.
> After contacting Icom America they told me to use ferrite beads, but were
> unable to tell me which ones... They (Icom) also recommended me to install
a
> bandpass filter in the coax line. It seems like I'm going to have to spend
> the price of two radios just to get it working!
>
> Does/did anyone else on this list have the same problem? Any
> advice/help/fixes will be highly appreciated. It's just too good a radio
> (and barely two weeks old) for me to get rid of it...
>
> Thanks in advance, 73,
>
> Gert - K5WW
>
>
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