[Elecraft] Anyone use a noise canceller?

[Geoffrey Mackenzie-Kennedy]

Ron D'Eau Claire  <ron at cobi.biz> wrote:

Those interested in noise canceling might be interested in what the rest of
the communications industry is doing with exotic integrated circuit systems
that kill noise by inverting and adding it to the signal at the antenna
input.

<snip>

The bad news for the casual homebrewer is that the chip measures less than
1mm (<0.04") on a side.

------------------------------------------------------------------

Thank you for the bad news Ron :-)  A circuit working at IF which involves 
splitting, hard clipping, phasing and summing used in CW reception to reduce 
zero beat QRM shows promise with noise, but much work still to be done for 
use as a noise canceller.

73,
Geoff
GM4ESD