Topband: Noise and reception

Steve Ireland sire@iinet.net.au
Fri, 15 Feb 2002 15:52:39 +0800


G'day Don,

A couple of other simple ideas you might like to try as a low noise rx
antenna, as you seem to have plenty of real estate, is to try a couple of
low full-size horizontally polarised antennas.

1.  A simple half wave dipole about 10' high, fed in the centre with a
voltage-type 1:1 balun.  It will be virtually omni-directional but
discriminate against the predominantly vertically polarised noise.

2.  A horizontal full wave loop, about 10' high, again fed via a
voltage-type 1:1 balun.  This needn't be particularly symmetrical - it can
be squarish, rectangular, circular-ish, whatever you like.

Give 'em a try - you might be surprised.

Vy 73,

Steve, VK6VZ 

>
>Over Xmas holiday, I put up a 400' terminated Beverage, 10'  high.  It seems 
>to be my quietest antenna, although not too directional.  However, it is no 
>panacea, picking up certain types of noise almost as strongly as it comes in 
>on the vertical.
>
>
>73, Don K4KYV
>
>
>
>
>
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