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The MFJ-1026 saved my DX

By Ralf Radermacher, Germany
from, March 4, 1999
Question: Has anyone tried the MFJ-1026 or MFJ-1025 electronic noise canceling signal enhancers? How well have they worked?
I've been using one for about a year now. Living smack in the city centre of Cologne (abt. 1 million people) with a bazillion of computers, neon signs, trams, sodium vapour street lighting, processor controlled coffee grinders, washing machines and heaven knows what else, I was just about to give up SW for good when I came upon the MFJ-1026.

First, I'm still (or rather again) enjoying my radios, so one could say the money has been well spent. Your own mileage may vary.
Much depends on what antennas you're using and what you want to use the 1026 for. Here its main use is getting rid of man-made noise, a continuous racket which extends from deepest LF well into UHF but is worst from about 100 kHz to 3 MHz. In this range and with the antennas mentioned further down in various combinations, results cover the whole palette from downright amazing to non-existant.
But generally noise at this QTH can be reduced by about 10 dB on average which mostly makes the difference between a signal which will get on your nerves after a few minutes or something you'll want to listen to for hours on end. In any respect, this is a lot more than I have been able to accomplish with anything else.

Don't expect optimum results within 10 minutes of installing the unit. It takes some experimentation with antennas and antenna combinations and a few days to get the feel of the controls.
On a sidenote I tried, just out of curiosity, to 'null out' strong medium wave BC stations to reveal weaker stations on the same channels which are usually masked by the big European powerhouses (600 kW are common power levels, here).
One example: I was able to attenuate the BBC on 648 kHz (a sig to load batteries with) sufficiently to get decent reception of another station on the same channel. Don't recall which one, though, but it was completely unnoticeable, otherwise. So, this should back their claimed 60 dB of attenuation.
Be advised that the 102x needs a minor modification (de-soldering two SMD chokes) to work below 1600 kHz.

Disadvantages? Slight to moderate intermod on MF after removing the high-pass inductors to open the unit up below 1600 kHz and slight intermod on the higher SW bands but always less of a prob than the noise without the 1026.
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