Thanks very much for the flurry of responses I got.
Seems that the common wisdom is to reject the BCB
interference with a T section tuner or a BCB trap on
the Beverage feed.
I'm curious though - these spurs come through even
when the aux antenna isn't even selected. I'm
listening with the main (not aux) antenna selected and
the spurs appear with the Beverage plugged in to the
aux jack, and disappear with the Beverage unplugged.
And I'm talking a full S7 spur on 3510Khz.
If it's simply sigs coming in through the Beverage,
shouldn't the main/aux switch cut them off?
Thanks very much for all the help,
Barry N1EU
N1EU <n1eu@yahoo.com> wrote:
>
> 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.
>
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