[TowerTalk] MFJ-1025/1026

[Jim Brown]

On Sat, 22 Jan 2005 08:05:08 EST, BobK8IA at aol.com wrote:

>I have been evaluating a MFJ-1026

I've played with a similar product, the ANC-4, here at my very noisy 
Chicago QTH. My observations are pretty much the same as Bob's -- it 
can help with a single source, but you need a decent noise-sense 
antenna and the balancing act needs continuous attention. None of 
this is at all surprising -- it's inherent in the design concept. 

The relatively early version of the ANC-4 that I have has a serious 
problem with fundamental overload by local broadcast stations with 
any significant length of wire attached, which also limits its 
usefullness. Later versions added a front end filter. 

BTW -- these units can also be used to null individual birdies from 
sources like the local oscillators in radios and similar trash. The 
problem I have here is literally hundreds (or even thousands) of 
sources, so the best I can do is choose the most obnoxious and try 
to kill it. Occasionally it helps enough to improve copy a bit. 
Another use for these boxes is as a way to bring a separate receive 
antenna into a receiver that lacks a separate receive antenna input 
(like my TS850). 

Jim Brown  K9YC