Dave,

Thanks for the info. In my case, the source seems to be a bank of 4
transformers on a pole about 300 feet away. Weirdest thing I had was S9
white noise from about 40 to 55 MHz with about 50% amplitude modulation at
around 50 KHz. Turned out to be a 60 amp cartridge fuse in my fuse box about
to go bad. I think the 50 KHz was a mechanical resonance in the fuse.

I don't know about the 746, but my 756 has dual watch capability, which lets
you listen to two frequencies at the same time. It would be interesting if
they would let you vary the phase of the secondary channel..

Tam/WB2TT
"Dave Shrader" wrote in message
et...
My ANC-4 is sitting on top of the ICOM 746. I have a short piece of
coax, 7 to 8 feet, to a doublet with a total length of 8 feet on the
floor against an outside wall.

Works Great!

I've used the ANC-4 for almost two years. While in Massachusetts the QTH
was 100 meters from the New England Power Grid with three sets of high
tension [ 67,000 volts] three phase power lines [nine wires total].
The power lines were generally quite quiet but during summer humidity
and/or thunderstorms they would get 'noisy'. The ANC-4 reduced the noise
to S1 typical levels.

Here in New Hampshire, my local noise source is the local LAN where the
router is four feet from my receiver. Similar results with the ANC-4.

BTW, it was given to me as a gift by W1KSZ who picked it up on e-bay for
about $60.00. Thanks many times over, Dick.

DD, W1MCE