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Old 02-13-2018, 3:51 PM
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Location: Mojave Desert, California, USA
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Originally Posted by FrankO23 View Post

I'm still trying to get a handle on the directionality of these antennas. I've read that the directionality should be strongest at MW, where the antenna can be turned to null out interfering signals. At HF, I understand that they can be close to omnidirectional for distant radio signals, but can still be turned to null out local noise sources such as electrical from households etc.
Arrival angle has a lot to do with how a loop nulls.

On MW stations the arrival angle is often low, this is particularity true for local or semi-local stations where you are receiving via ground wave. And the loop will often null very well. On HF when talking about sky wave signals the loop will not present as sharp or as well defined a null.

I have no close MW stations, there is one 5 kW station 6 or 7 miles away and one lower power one about the same distance in another direction. I can null each of them by 30 dB or more with the Wellbrook.

T!
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