David wrote:
On Thu, 31 Aug 2006 15:02:46 GMT, Ron Hardin
wrote:

David wrote:

On Thu, 31 Aug 2006 08:27:40 GMT, Ron Hardin
wrote:


It doesn't matter. Precision doesn't come into it any more or less
with random wires.

A random wire is already full of nulls and nodes. Much easier to
phase vertical omnis.

No, if one antenna isn't hearing the signal you want to eliminate, the
job is done for you. If it is hearing it, you phase it away with the
other antenna.

Nothing in the operation changes. You diddle the knobs the same way
in either case, and respond the same way.

The ANC-4 doesn't care where the signal comes from, just that it's
present.

Very imprecise and technically minimalist.

Yes, but it's also correct. I have the MFJ equivalent, and the
contraption works just as Ron describes. I have two antennas up thar,
one a random wire and the other a multiband dipole, and except for the
lower HF bands, where the random wire just isn't quite long enough, I
can cancel out most any *single* obnoxious local noise. For the MW
station nulling, by and large it works fine, despite the mismatched
antenna length...it will chew a big bite out of a pretty big local
signal and leave the weaker station 'neath intact.

It doesn't work worth a hoot for general band noise (no surprise), and
for things like distant lightning that theoretically should be
nullable, it is so tricky that it isn't really worth the trouble.

Bruce Jensen