[amsat-bb] Re: Mobile RFI

Jim Sanford wb4gcs at amsat.org
Sat Mar 10 10:50:54 PST 2007

Interesting.  I have driven a Saturn SW2 and now drive a 2000 Saturn 
LW2, and have not seen birdies on the 2m calling freq.  I have noted 
that when I operate 40m SSB, sometimes the temperature idiot light comes 
on adn goes out -- the only RFI I've seen in the vehicle.  I put chokes 
around the ECM mounted on the engine, and left it at that.  I understand 
there's another ECM somewhere, but haven't bothered to hunt for it.

Good luck!
wb4gcs at amsat.org

Kyle Yoksh wrote:

>----- Original Message ----- 
>>Don't forget to check it for birdies before buying. I have a 1998
>>Saturn SC2 that has a *nasty* noise emission on 2m right smack on top
>>of the calling frequency.
>>73 de Maggie K3XS
>Hi Maggie (and the list),
>This is a very common issue w/ Saturn vehicles. I worked for a Saturn dealer 
>until 1998, and found the problem myself in every SL and SC I drove.
>It also occurs in my 91 SL1, and the official cause is said to be the ECU 
>(main computer). My vehicle is very well grounded, although I haven't built 
>copper box around the ECU yet.. hi hi
>It's also a good idea on these vehicles to attach ground straps from the 
>trunk lid to the chassis.. I used the braid from some old CATV coax, with 
>ring terminals
>crimped onto each side. Anyone using a trunk-mounted antenna with a Saturn 
>might want to add these.. This cured some pretty strange antenna problems
>I was having, as it did for others folks I know..
>Kyle Yoksh
>Olathe, Kansas
>Amsat# 35249
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