Dave,
As a 'rule of thumb' the captured signal power in small loops is
proportional to the area enclosed by the loop. Twice the area = twice the
power (3 dB).
The typical dimensions given for these loops allow them to be used on either
160M or 80M -- and as you have surmised, the loop can be larger for 160M
only.
73, Gary
K9AY
_________
Subject: [Antennaware] Shielded loop receive antennas.
> In the ARRL antenna handbook (and repeated elsewhere) is a design for
> a 160m shielded rx loop antenna with 5ft square sides.
>
> Can anyone advise me how the strength of the recovered signal would
> change if the loop was made bigger. By using low-capacity coax I
> think I could still resonate a loop that has 7ft square sides. This
> would very nearly double the **AREA** of the loop, I would like to
> understand how this would affect the received signal.
>
> Any thoughts would be appreciated.
>
> 73,
> Dave, G3UEG
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