[TenTec] Ford vehicle RF noise.

[Paul Gates, KD3JF]

Now if we could ever get the noise out of the MKIIG at the shack at home!!

Arthur Trampler <atrampler at att.net> wrote: 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" 

To: "Discussion of Ten-Tec Equipment" 
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  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  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 at 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 at contesting.com 
> [mailto:tentec-bounces at 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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