[Lowfer] would appreciate info on noise nulling

[Chris Trask]

>
> > and a circuit I came up with for dealing with impulse noise:
> >
> >     http://www.home.earthlink.net/~christrask/Paper020.html
>
> That is exactly what I've been looking for! I've started using a Ten Tec
RX320
> lately and it doesn't have a built in noise blanker. I've got an electric
> fence around the horse pasture that I can hear at times. My other main
> receivers have NBing circuits that seem to deal well with the noise, but
> there's not NBer in the RX320. Some kind of external blanking is just want
I
> have been thinking I needed to research.
>

    I came up with that due to having a number of noisy sodium vapor lights
and other discrete impulse noise sources near me, enough of them to make the
problem almost omnidirectional.  It took me a couple of months to get the
propagation delay down in the receiver and detector, and it all came down to
using the fastest cheap devices I could find in my parts stock.

    I started work on a baseband 60 Hz bandstop filter using a 16-bit
commutative filter.  Didn't finish it due to more demanding things around
here.

Chris

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