Are these the TV transmitters?  As in on the TV station or a community 
repeater site?

If so, this could just be too much general RF for the system to deal with.

I've also had trouble on the ethernet side of things at an FM radio station.
marlon

----- Original Message ----- 
From: "Adam Greene" <maill...@webjogger.net>
To: <wireless@wispa.org>
Sent: Thursday, October 29, 2009 3:14 PM
Subject: [WISPA] TV interfering with 5.8GHz?


> Hi,
>
> Just installed a 5.8GHz Alvarion VL on a roof with lots of TV antennas.
> Interference was horrible. We were not expecting that, as the main TV
> antenna culprit says "490" on the side -- I assume 490MHz.
>
> My obscure reasoning tells me that if there were a really strong signal
> on 483.33MHz, it might create a harmonic on 5.8GHz, which is 12 x 483.33.
>
> Has anyone seen interference of this type before? Do you think changing
> to horizontal polarization would help? Anything else we could do to
> mitigate the interference (besides putting up a lead barrier) :)
>
> Thanks,
> Adam
>
>
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