[Icom] Re:Mobile Noise Supression - Final Chapter

Tue, 08 Oct 2002 18:22:52 -0400

Doug, while locating and eliminating the noise is the preferred approach, I 
wonder what a Clear Speech speaker/dsp filter would do to your noise. If 
you can get your hands on one to try, it might be worth the effort. I use 
one with my 707mk2g in a 2000 Buick and the noise reduction is 
considerable. I wouldn't be without it. Good luck.

D. Aukamp - K4QT

At 05:52 PM 10/8/2002 -0400, you wrote:
>Message: 12
>From: "Davies, Doug A FOR:EX" <[email protected]>
>To: "'[email protected]'" <[email protected]>
>Date: Tue, 8 Oct 2002 13:20:12 -0700
>Subject: [Icom] Mobile Noise Supression - Final Chapter
>Reply-To: [email protected]
>
>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

Regards, Dave A.