I run the 706MKIIG in my 2000 Taurus and thought I did not have a noise
problem...but in reality it was the NB on the 706 masking it.
My solution was to bond all doors, hood and trunk to frame; tailpipe in two
places; engine, transmission and alternator where it's attached, and I put
ferrite cores on the fuel pump line and spark plugs.
End result? Took noise from the car from probably S7 or 8 (again, never
noticed it due to effective, but of course somewhat distorting NB) to NIL,
zip, nadda. So now I can work (in the absence of line noise) without the NB
or DSP noise reduction which of course helps the RX overall in the presence
of strong signals.
73,
Art, KC2G
----- Original Message -----
From: "Paul Gates, KD3JF" <pearly732003@yahoo.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Monday, October 01, 2007 5:43 AM
Subject: Re: [TenTec] Ford vehicle RF noise.
I did most of the grounding mentioned here on our Chevrolet's and Ford
stationwagons in the 70s, and 80s. I have no noise problems with my Impala
or Astrovan. The noise blanker and DSP on the 706 <ICOM> will take care of
it. I have the 706MKIIG and it probably has the worst receiver ever made
hands down! But, it seems to work better in the car than at home.
Paul
Bill Harris <W7KXB@msn.com> wrote: Besides tailpipe grounding, we
grounded the engine hood on both sides. We even went as far as a shielded
ignition. Also, coaxial by-pass capacitors on the 12 volt generator.
(this is a few years back) The alternator can be troublesome as well.
Installed grounding devices that went in the axel hub caps and injected a
powder that prevented static build up in the tires. Ohoo yeah,,,ground
straps between the chassis and frame (each side). All this to get the
noise floor down for operation on the 40mHz FM band. I would expect the
vehicles of today are noiser with all the computers on board.
Gud Luck.
Carry-on
BillHarris w7kxb
----- Original Message -----
From: Duane Calvin
To: wb2vuf@arrl.net ; 'Discussion of Ten-Tec Equipment'
Sent: Sunday, September 30, 2007 6:55 PM
Subject: Re: [TenTec] For Sale: Ten Tec Argonaut V
Ford has stopped doing this as a TSP? It worked great on my 2002 F-150
(for
the fuel pump noise, anyway). Took the overall noise from S9+20 down to
S9. Grounding the tailpipe took the noise down to S6. A few things I've
tried after that haven't helped much. Mostly ignition noise left now.
Duane
Duane Calvin, AC5AA
Austin, Texas
www.ac5aa.com
-----Original Message-----
From: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]
On Behalf Of Bwana Bob
Sent: Sunday, September 30, 2007 8:35 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] For Sale: Ten Tec Argonaut V
The Ford fuel pump RFI filter produces mixed results and requires
dropping the tank because the filter is installed right at the pump. A
better way (IMHO) is to cut into the pump wiring at the nearest
connector (about 2 feet from the tank) and installing coaxial type
feedthrough capacitors. You can find more info at
http//www.4x4central.com in the ham radio forum.
73,
Bob WB2VUF
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