On Sun, 27 Aug 2006 09:35:42 -0400, Dave wrote:

Sun Tzu wrote:

REDACTED


you use an antenna thats 20 ft long would that be a dipole? 3 inches off
the ground?? no kidding, any idea why so low? what kind of wire do you
use to connect the noise unit to the antenna?

would you say the units eliminate the noise equally as well? or does one
seem to be better than the other?



The 20 feet long antenna is exclusively a NOISE SENSING antenna. It is
used for the NOISE channel on the ANC-4/MFJ-1025. It is simply a wire
plugged into the back of the units.

Mounting it close to ground minimizes the HF/RF signals while picking up
the manmade noise [mmnoise from my previous post] signals.

The ANC-4 works very well with the short NOISE Sensing antenna. The
MFJ-1025 works better IF the NOISE SENSING antenna is longer and higher
[like a second HF antenna]. The MFJ states that it can be used to
eliminate adjacent channel interference. I have never used it in this
mode. [My ICOMS have an excellent ANF feature and DSP]

The ANC is very easy to use [two independent adjustments]. The MFJ takes a
little learning to use [three interdependent adjustments]. Both do work!

If I had to choose one ... the ANC-4 ... ease of use and less noise
antenna requirements.

thanks for all the info Dave.
looks like the ANC-4 is the way to go. I have downloaded the manual for
both. the noise sensing antenna that you use is it in a dipole
configuration or like a long wire?
what kind of wire do you use to go between the ANC-4 and the noise antenna?


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