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Re: managing utility noise

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Posted by Ed Holland on December 30, 2023 at 14:00:39.

In Reply to: Re: managing utility noise posted by swlem3 on December 30, 2023 at 04:02:31.

Hi Ray,

Interesting stuff. If the circuit is similar to the one featured in this link:

www.lyonscomputer.com.au/Electronic-Modules/X-Phase-QRM-Eliminator/X-Phase-QRM-Eliminator.html

Then I can imagine it takes some patience to set up and adjust - perhaps a bit like the old noise bridge, but with the added complexity of finding a "noise" antenna that picks up the QRM you are trying to null?

I have a couple of questions. 1) What do you use for the noise antenna, and, 2) You mention modifying the unit to work at LF. What changes are you planning here? Guessing, I would imagine the transformer on the noise antenna would need more inductance.

Please keep us posted - it is an interesting area.

73s

Ed

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