I agree with Bob. 

Mixing could also occur down at the guy anchor area, where cables are woven 
through the turnbuckles.  Had it happen here...

Laryn K8TVZ


> 
> The cause of your interference problem is not RX "overload".  It is as 
> others have suggested: a mix occurring somewhere in the near field of the 
> antenna.  Pads may eventually mask the real source of the problem, once 
> you've added enough to drop the signal below your RX's noise floor, but 
> you'll end up with a deaf repeater.
> 
> How far away were the separate TX & RX antennas when you tried that?  I'd 
> think if they were far enough apart that you would lose the mix.  OTOH if a 
> tower joint is the source of the mix (likely since a lot of length is 
> required to couple in the AM BC station), it might be all over the tower.
> 
> A similar problem was partially cured here by spraying some conductive 
> paint into all the tower joints.  Each time it was done the interference 
> would disappear for a few months, then return.
> 
> Bob NO6B
>


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