Effective aperture is not size related.
Effective aperture is exclusively tied to wavelength and gain.
The only time effective aperture means anything for receiving is when
external noise no longer significantly influences noise floor. Other than
that, effective aperture is meaningless for S/N
I've been playing with an amplified Wellbrook ALA 1530S+ loop antenna for about
10 days now. It does a very good job on both close-in and long-distance
signals across the SW spectrum, and its ability to knock down the local noise
is a great benefit in my dense suburban location.
Compared to
Hi,
That small mag-loop has a small aperture and so all of the signals
delivered to your radio will be lower levels than from a bigger antenna
(in terms of wavelength. A preamp should improve the signal strength but
not improve the SNR over what you get with the loop and no preamp. The
I did this about 10 years ago. I live on the Wisconsin River and it's about
a half-mile wide in front of the house.
I laid out 1000' of #14 stranded, insulated wire. I terminated it with a
200 ohm resistor to a 1/4 wave wire and several short radials running nearly
parallel to the
I put up on of K6MM’s helically Wound 160 vert can not get SWR down
I put up k6mm Helically wound vert for 160 but can not get SWR below 3:1 I have
8 - 1/4 wave radials of 16 awg wire out . Any suggestions you can offer would
be appreciated
W4DEE
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Topband Reflector Archives
We are leaving next Tuesday to go visit my son and his family in Cayman
Islands. I'm going to work the CQ 160 Meter Contest and, for comfort reasons,
will operate from a fixed, inland location. If there is time, however, I am
bringing a kite and some small wire and am hoping we can go to the
