Topband: Beverage question

[Hardy Landskov]

Andrew,
I am not sure of the interaction. Maybe someone has some experience with 
that. I would try to make the wires parallel to each other at the same 
heigth. That way you have the same impedance to ground for both antennas.
But if both stations want to listen in the same direction at the same time 
(ie working the East Coast of the US) then a simple 75 ohm 2-way power 
splitter covering both bands will work fine using the same antenna. I 
believe 30 dB isolation between ports should be possible at those 
frequencies. Both outputs will be 3 dB + insertion loss (~3.6 dB) down from 
the input.
73 Hardy N7RT


----- Original Message ----- 
From: <lissa at lissa.dk>
To: <topband at contesting.com>
Sent: Saturday, July 30, 2011 7:02 AM
Subject: Topband: Beverage question


> Hello there, this is Andrew OZ5E,
>
> Our 4-directional Beverage (ladder line) works fine but sometimes we
> would like to be able to operate on 80 and 160 at the same time from 2
> different stations on the same property. The easiest way would be to
> use the same supports and run the ladder lines close together, perhaps
> at different heights, say 50cm and 100cm. Would this work or would
> there be interaction. Of course we can just try it but I wonder if
> anyone has any thoughts?
>
> Best wishes,
>
> Andrew
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK