[TowerTalk] noise canceling

[WA3GIN in Alex. City, VA]

CAUTION:  The ANC-4 requires >50 watts to key the switch over relay.  If you
are using a linear that requires less power or running QRP there is a high
probability that you will fry the early front stages of the sense circuit.
Timewave has a bulletin that will show you how to connect the ANC-4 to your
PTT circuit of the transceiver (basically taking one lead to ground in xmit
mode).

You can also put two units in series and work on two difference noise
sources.

73,
dave
wa3gin


-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Thomas Tow
Sent: Saturday, August 26, 2006 12:33 AM
To: towertalk at contesting.com
Subject: [TowerTalk] noise canceling

Rich, the MFJ 1026 works really well if it is set up correctly. Since most
of the noise is vertical you must have a REALLY good vertical noise antenna
that will produce a signal to the 1026 at least equal or preferably greater
to the local noise. It will cancel it out a lot. I believe ON4UN mentions
one of these in one of his books and I have had two of them. It does take
some adjustments and getting used to...but it will work very well if you do
not skimp on the receive noise antenna. I would try a butternut, cushcraft
or other similar vertical. Don't bother with the little antenna that comes
with the 1026...trash it... HI.  Another unit I had at another QTH that
worked ok was the ANC 4. It works with the same theory with less
adjustments...again, all dependent on the receive signal to it.   
Hope that helps some. 73, Tommy WD4K  
_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk at contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk