Hi all Here's what works to cancel line noise at my QTH. I purchased, on Ebay, an MFJ 1026 "Deluxe Noise Cancelling Signal Enhancer" gadget. I paid 125 bucks for like new. It takes most of my line noise from S6 or S7 down to S1, or so, and I am delighted with it. One caveat: It is not as simple as throwing a switch to enable it to do its work. It cancels noise by using an auxiliary (small) antenna and as you adjust the front controls it cancels the noise by phase shifting the noise 180 deg., and must be set up afresh for each use. It has no discernable effect on the desired signal. In many cases, it has enabled me to solidly copy signals which were otherwise impossible to copy. It is installed between my ant tuner and the transceiver. My aux ant is about 30' long and 10' off ground. Length not critical. A 10 wire would do.
Back to the adjustment of it, it took me a lot of practice to get the most out of it, but if one follows the manual faithfully, it works fine, and I can now adjust it rapidly (in a few seconds). MFJ claims the ability to boost a signal as well as cancel one, but I don't use that feature. The deluxe model comes with a telescoping small screw-in antenna, but I found it works much better with a longer random wire. There is a connector on the back for this. Finally, QST mag tested this device some years ago, and I suggest you read that article before buying. Anyone else using one?? George, N4YM _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
