Topband: Inverted L Proximity to RX Antennas

[Guy Olinger K2AV]

If you model the RX antennas with the TX antennas in the model, and then
without, you can see the change in RX pattern, usually with the loss of deep
nulls.  Some situations you can get extreme interactions and reversal of
pattern or loss of any directionality.  Better to model with your
dimensions, your specific conductors (include any conductors in the area,
not just TX antennas) to see if the model suggests interaction.

There is no rule that works everywhere, other than the general statement
that TX wire antennas CAN modify the pattern and performance of RX antennas
in proximity.

73, Guy

On Wed, Feb 16, 2011 at 1:25 PM, <k8qm at nc.rr.com> wrote:

> All,
>
> I know it is important to keep RX antennas like flags, pennants and K9AYs
> as far away from TX antennas as possible. In the case of a quarter wave
> inverted L with approximately 50 feet vertical is it as important to keep
> the RX antennas away from the horizontal section as the vertical section?
>
> Thanks for any guidance.
>
> Regards,
>
> George (K8QM)
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