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.