[Icom] Mobile Noise Supression - Final Chapter

Tue, 8 Oct 2002 15:04:22 -0700

Hi Doug
One of the things everyone is not looking at is the rig. Some rigs
do pickup more noises then other rigs. I pulled a IC-706 MKIIG out
of my Ford PU and installed a Alinco DX-70H and had at least 1/2 the
Noise. I have had two MKIIG's and found the same on both. I am now
running a IC-725 and it's not to bad on noise.
Good Luck,
Boyd  W6DSB

----- Original Message -----
From: "Davies, Doug A FOR:EX" <[email protected]>
To: <[email protected]>
Sent: Tuesday, October 08, 2002 1:20 PM
Subject: [Icom] Mobile Noise Supression - Final Chapter

> As some of you may remember, back in August I posted a plea for help to
> solve the vehicle noise problem(s) with my IC-706MKIIG installation a 2001
> Toyota Tacoma V-6 pickup.  I thought I would post a follow-up, for those
> that may be interested.
>
> From all of the replies I received, I tried out all of the suggestions to
> solve the problem(s).  To date, these have included:
>
> Power to rig goes directly to battery with fuses in both lines, both lines
> have snap-on ferrite beads.
> Bonded all body parts to the frame
> Bonded engine block to the frame
> Bonded exhaust pipe to the frame
> Put large value cap (40,000uF@100V) across alternator terminals.
> Put filter in pos. alternator line
> Put filters in both lines of the fuel pump
> Put large snap-on ferrite bead on wire bundle exiting main computer.
> Put snap-on ferrite beads on both ends of antenna coax.
> Put ferrite beads on both ends of antenna adjustment power cable.
> Checked that spark plug wires are silicon low emmision type - they are
> Checked that plugs are resistive type - they are.
> Went to Toyota dealer and asked if they could help me troubleshoot - they
> basically told me to "stuff it".
>
> So, the bottom line here is I've given up.  As I see it I have three
> choices, put up with the constant S-7 noise level, pull over and stop if I
> want to have a QSO or tear out the whole damn installation and sell the
> equipment.  I have run out of ideas and suggestions to try.  If some has
or
> knows someone who has a similar installation in a Toyota, and they have
> solved the noise problem, please let me know how it was done.
>
> And, If you are considering operating mobile in that new vehicle you're
> planning to buy, don't buy a Toyota pickup.
>
> Doug  VA7DD
>
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