Charlie, AS has been mentioned many times on this reflector, the most effective way track down a source is: 1) Make certain it is not in or on your own property; 2) use DF techniques to locate its lo
Christopher and Ray, Keep something in mind as to what Jim Brown, K9YC said: these conventional 2-line filters will NOT help if the 3rd wire ground is also carrying common mode current. That is becau
Gary, Sad to say, that unless you are successful with the application of decoupling and filtering techniques to eliminate the RFI to the TV, your best cure will be to relocate that sloper further awa
Aaron, A has been stated several times prior on this reflector, spend your time locating, not speculating as to the source. There are so many possible causes, BUT, before you try locating, be absolut
Paul, Depending upon application, but for home and office use, the EU requirements (to get the "CE" mark) for equipment susceptibility require ability to fend off undesired operation at or below 3V/m
All, I thought that the technically inclined on this list might want to be aware that at least one switching power supply manufacturer has now come out with "equivalent" replacements for the ubiquito
Jeff, You bring forth some very good issues - I would add that just as important as the 300 kHz ripple may be (or not) to devices being powered is the issue of how much extra radiated noise is contri
All, Switching power supplies ("switchers") and the RF hash they create are a frequent topic on this reflector. In an effort to help users of this group better understand the requirements levied upon
Tom, I suspect that your post will generate several replies. Mine is as follows: 1. Amateur radio is also a LICENSED service. We CAN invoke the FCC, but admittedly, it takes several more steps to get
John, Locating the source is usually faster than speculating as to what it might be. Start with the usual - power the '706 with a battery supply and then turn off power in the ENTIRE house when you a
Mike, Yes, that is true. One fellow ham here in IA did solve his recent RFI problem with the "power down the house" approach, which killed the RFI. By turning on one circuit breaker at a time, he dis
Kurt, Regarding RFI from a digital recorder ... That's why I keep a few analog cassette recorders around. I even have a pair of hand-held "note takers" with built-in mics and powered by 4 AA cells. T
Dale and Don, Sadly, there are no radiated emission controls in the HF range. The existing ones are all for 30 MHz and above. Plasma emissions from the TV sets is a lot worse than from the plasma ins
The current on-line issue of "In Compliance", a trade rag, had a very interesting link to information that the FCC has just recently released regarding complaints filed with the agency by consumers.
RFI Fans and Victims, Some weeks back, Jim Brown, K9YC, asked for input on what brand of dimmers seemed to create the least amount of RFI. The consensus, supported (in part) by me, was that Lutrons s
Charlie, Thanks for the comments. Getting some inside info like that is excellent (except for stock trading, of course!) and tends to lend some credence to the performance that users have observed. B
Jeff, Sorry, the main reason that dimmers meant for incandescent and halogen lamp loads has nothing to with the waveform. It has everything to do with the driver electronics that are inside the CFL o
All who have posted on the thread ... Folks, before any given t'stat unit is praised or condemned, consider that EACH installation is different. Yes, some may have better RFI protection than others,
Aaron, I have been following your thread with interest. The various comments posted have offered a lot of good suggestions and safety issues. Here is the bottom line: 1. For actual RFI that is carrie
Peter, Interesting issue. 1. First, I assume that you are NOT using an amp after the IC746 Pro. Is that correct? 2. If you have not tried this yet, REDUCE output power to a level at which the RFI sto