Is this an explanation of the term 'capture area' I hear a lot of hams
use.

regards, Jer

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,