Dunno about Omni 6, but with antenna switches you don't get complete
isolation. I had similar spurs which were generated by mixing on my tower.
The guy wires had a little corrosion where they contacted the tower legs and
that was enough to provide a mixer for broadcast signals. I was getting
mixing products, harmonics, etc.
Happy MM and 73 de Mike N4NT@wireco.net
----- Original Message -----
From: "N1EU" <n1eu@yahoo.com>
To: <tentec@contesting.com>
Sent: Friday, December 31, 1999 11:22 AM
Subject: [TenTec] Spurs from Omni 6 aux antenna input
>
> Well it's an idle day here and I was just playing with
> the Omni 6 and found something unusual. Seems to be
> AM broadcast spurs coupling in through my Beverage
> receive antenna feeding the aux (receive) antenna
> jack, even when the Omni antenna switch is on "main"
> not "aux. On 3510Khz, I can hear mixed signals from
> 1460Khz and 590Khz AM and on 1830Khz I can hear the
> 1460Khz AM station.
>
> Disconnecting the Beverage from the aux ant jack
> removes the sputs. The Beverage coax shield is
> grounded at the antenna end about 100ft away.
>
> The Omni chassis has a very good RF ground. A common
> mode choke on the Beverage feed had no effect.
>
> Would appreciate any comments.
>
> Thanks and a very happy 2K to all,
> Barry N1EU
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