[Lowfer] Accidental Receive Antenna - What's Happening

[Chris Wilson]

Hello Andy,

 Wednesday, January 1, 2020

 I believe you made the TX antenna resonant on or around a frequency
 where there was significant RX noise and it "sucked out" some of this
 by coupling to the RX antenna. Paul, N1BUG posted on the LF reflector
 about a similar phenomenon where his TX antenna de-tuned or weakened
 his RX ability on a different vertical RX aerial unless the TX one
 was disconnected and / or grounded.


Best regards,
 Chris    2E0ILY       mailto:chris at chriswilson.tv


AKvL> Hi all:

AKvL> After using this " Accidental Antenna " for a few days, and
AKvL> seeing consistent, and repeatable results; I am
AKvL> sharing the details of how it came about so that those who know
AKvL> antennas might offer some insight into 
AKvL> what is happening with it. Best results occur on 2200 meters,
AKvL> and 1750 meter - lowFER signals.

AKvL> In as few words possible:

AKvL> 80 foot RX wire, 8 ft AGL at window to shack, sloping up to 10 ft AGL at the far end.
AKvL> In shack, wire ran through Series fixed value Inductor and Air Variable Cap to ground.
AKvL> I adjust Cap for maximum noise level/ S-meter reading, or signal if I hear one.
AKvL> Large TX antenna is grounded ( by accident ) through an adjustable peaking coil.
AKvL> I found I can adjust the grounded coil and reduce noise to almost nothing, and audibly
AKvL> hear signals that were previously masked by the noise.

AKvL> I am excited about my recently found receive capabilities. I'm
AKvL> curious what is happening with it.

AKvL> Thanks for comments, and 73 - HNY to all:

AKvL> Andy - KU4XR
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