[CQ-Contest] ANC-4 Noise Cancelling box - FOR SALE
n5ot at n5ot.com
Sat Mar 24 21:38:43 EST 2007
I have one of these FOR SALE. Very clean and 100% working condition, as
new, in box. Complete. Works as advertised. Used one time at PJ4R in
2005 - world #1 ARRL DX CW M/2. $150.
----- Original Message -----
From: "W0MU Mike Fatchett" <w0mu at w0mu.com>
To: <cq-contest at contesting.com>
Sent: Saturday, March 24, 2007 2:38 PM
Subject: [CQ-Contest] ANC-4 Noise Cancelling box
>I have had an opportunity to play with one of these boxes and they work
> well *IF* you can get a sense antenna that hears the same noise that you
> have. It should only be as long as needed to pick up the offending noise.
> In my case I have a very noise power line to the NE only about 1000 ft
> my tower. The power company has been notified so hopefully this will not
> a prolonged experience.
> I as able to erect a low dipole very close to the power line. It is about
> ft off the ground. I started with a dipole that was 4 ft on each leg but
> that did not have enough signal so I lengthened to about 14ft on both
> and this worked much better.
> I found the extendable antenna to work a bit but it picked up all sorts of
> birdies and other shack noise. I also tried hooking up my R8 vertical as
> sense antenna but that was too much signal to handle.
> The unit comes shipped with a relay delay set to slow which I found very
> annoying as I had to hear about 2 seconds of the power line noise before
> unit would engage after transmitting. You can change this by moving a
> jumper inside the unit.
> Mike W0MU
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