Topband: 160m & 80m RFI issues requesting ideas for ANC4 sense antenna to cancell out local noise
Richard (Rick) Karlquist
richard at karlquist.com
Sun Nov 1 10:55:06 EST 2015
On 11/1/2015 5:03 AM, Goldtr8 (KD8NNU) wrote:
> HI Rick
>
> I have tried this idea also but again not enough gain on those antennas.
> The vertical has s9 noise the others are 1/2 that level same as the
> KD8NNU
If you are OK with vertical polarization, the simplest way to
null a particular direction is just to use a conventional
receiving loop and rotate it until you minimize the noise.
(This is a loop in the vertical plane, unlike your 2 wavelength
horizontal loop "skywire"). This is a lot more foolproof
than the ANC box.
Rick N6RK
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