Sounds like whisker growing in the helical cavity.
wb8art wrote:
>
>
> Wonder if anyone has had this problem and know what the problem is. I
> am working on a GE Exec II repeater (converted mobile) which has no
> Comb no. I any case the issue is that if I move around the cable
> feeding it with a generator I was seeing a change in the recieve.
> I went directly to the RCA jack, and then found that just making
> connection with the center pin, I have about 10 to 20db stronger
> recieved signal than when I push it all the way in making the ground
> connection.
> This is a mobile and the RF deck is no. is 19D417075G14 rev A covered
> by LBI30032E. This shows a option of either non floating ground or
> floating ground input. This one is a non floating ground one. Might
> have been changed but I have know knowledge of its history.
> The RCA jack center pin connects directly with a wire thru a hole to
> the first helical and I have looked and can see no connection issues
> and measures a short with an ohm meter. I even reheated the solder
> joints and no change. Anythoughts would be appreciated.
>
> Randy
>
>
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