I thought I should add some photos of what he made. His was a bit more complex with a transformer and bridge rectifier. Mine was more basic & I used a roller inductor but it did the job.
I didn't shrink the photos so as to leave more detail available when you click on a photo. http://doctorgary.net/RFI-1.jpg http://doctorgary.net/RFI-2.jpg http://doctorgary.net/RFI-3.jpg http://doctorgary.net/RFI-4.jpg http://doctorgary.net/RFI-5.jpg 73, Gary KA1J > Another thing that might help if the > ferrites don't do the job is to run a wire > from a series variable capacitor and > variable/tapped inductor, to the stove or > possibly to the metal conduit the wires to > the stove are going through. This, with an > attachment to a counterpoise or ground. > > My father had problems when he would > transmit on 80 and it would trigger the > system that used house wiring to turn on > various lights in the house when a phone > call came in on her line, or the door bell > was rung. She was totally deaf and needed > this to get to her TTY setup for a voice > operator to come in and translate speech > to her printout. > > He did as I described and had a RF ammeter > in line. When the capacitor/inductor was > adjusted under a key down situation, you > could follow the result on the ammeter and > at the right setting, the interference > stopped triggering the in-line receivers. > Sometimes he needed to tweak the setting > but it always worked for him. > > I think MFJ used to have something to do > just this, I don't recall what they called > it. > > Good luck & 73, > > Gary > KA1J > > > Thanks to all the guys who answered my query - seems unanimous that > > I should add Mix 31 Ferrites to the stove ac feed so just ordered > > them from DX engineering - shud be installed and tested by the end > > of the week.. Will probably also add some .05 or so bypass caps to > > the line while I´m there - wouldn´t hurt ! > > tnx again - keep y´all posted..Jay NY2NY > > > > > > --- > > This email has been checked for viruses by Avast antivirus software. > > https://www.avast.com/antivirus _________________ Topband Reflector > > Archives - http://www.contesting.com/_topband > > > > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband > _________________ Topband Reflector Archives - http://www.contesting.com/_topband
