Pat, Dave and Dale, Small bidirectional loop antennas such as the Pixel "magnetic" loop are very effective at placing a deep null on a single vertically polarized, ground wave propagated RFI source.
Mike Martin is one of the most capable RFI investigators you could ever hope for. What did he tell you about the RFI source? 73 Frank W3LPL -- Original Message -- I posted this once before. The stati
Hi Gary, Can you share the results of the RF Exposure evaluation you are required to perform by the FCC regulations affecting your license? Your description of your antenna placement and your earlier
Hi Jorge, Its best to ask a few other hams to run the same test at their QTHs. You could be experiencing 10 kHz-spaced intermod products, if thats the case they shouldn't show up at other QTHs. They
http://www.coloradoan.com/story/news/local/2014/06/05/pot-growers-lights-interfering-ham-radio-chats/10015757/ -- Original Message -- _______________________________________________ RFI mailing list
I have used all manner of transceivers in my multi-multi station over the last forty years. Including several each of the following: - Collins S-line - Drake C-line - Drake TR-7 - TS-830 - TS-930 - T
Hi Ken, Don't be fooled... Outlet testers can only reliably verify the wiring of the three wires connected each individual outlet, they cannot detect many other dangerous wiring errors commonly found
NEC quotes relevant to this discussion: Not less than two driven ground rods placed at a minimum of 6 feet apart when a non-metallic water piping system exists or is to be installed. A separate groun
Hi Ed, You're doing it right, the idea is to avoid galvanic corrosion. Galvanized ground rods should be used with galvanized towers and copper ground rods should be used with buildings, 73 Frank W3LP
Hi Larry, The 25 kHz bandwidth you heard is an over the horizon radar is in RAF Akrotiri, Cyprus. http://www.ominous-valve.com/Akrotiri130312.mp4 Fortunately it changes frequency regularly, its been
Hi Tony, I'm lucky to have both Comcast Xfinity and FioS in my neighborhood. I had Comcast for many years. They have a great entertainment package but despite countless service calls over the years t
Hi Mike, A time domain reflectometer makes quick work of identifying the locations of faults in an electric fence. Maybe you can find a ham who will loan one to you. Properly installed its resistance
Hi Mike, Many hand held and portable VHF/UHF ham band transceivers also have the aircraft band built in. Perhaps one of your friends had one. Many inexpensive aircraft receivers are also available on
Hi Mike, This is a good time to break out your antenna modelling software and give it a good workout. Almost all of the radiation from wires more than a wavelength long and installed a few hundredths
A few weeks ago I noticed a new source of intense broadband RFI had appeared on 160 meters and adjacent frequencies from approximately 1500-2000 kHz. There is no trace of RFI on any other frequencies
Hi Jim, I forgot to mention that this TIS transmitter lost its audio feed about six months ago, apparently no one noticed! Its 1700 Hz carrier is strong and clear but no trace of audio. I've never he
Hi Mike, We never needed to use the loopstick antenna in the PL-660 receiver. Because I had a very accurate bearing from my 350 foot diameter 8-circle receiving array, we simply used the PL-660 S-met
Hi Jeff, My consistent practice is to identify the highest frequency where I can hear the RFI in my shack. I then use my directive antennas to determine the bearing on which I should search. I can co
Hi Stan, There are countless thousands of poles within five miles of my QTH, his method could not possibly work here. If I tried, I would lose my excellent reputation with my power company RFI crew.
Hi Bill, That's not an uncommon error, and potentially a dangerous error in if a lightning strike that causes sparking. Google will help you find much information about grounding and bonding of gas p