Yesterday Mike (W9RE) and I tracked down some RFI that's originating from an Xfinity wireless router. The Xfinity name for this modem is XB3, but looks like there are actually numerous model numbers
Hi Jim, Thanks, but I really wanted to know if others have noticed a 1 MHZ wide signal that has a white noise waterfall and spectrum plot (both RF and Audio) from the Wireless Router I mentioned cent
Hi Jim (and gang), I should also mention the wireless router we are talking about is really called a Residential Gateway. The Xfinity Telephony Gateway provides four Ethernet connections for use as t
Hi Jim Thanks, and I thought about submitting an article to QST since I have written articles for them in the past, and will do that for my portable flag for HF direction finding. Numerous people hav
Hi Frank, You bet I will continue to use tuned and untuned loops too. I have tuned loops and untuned loops in my arsenal. I have untuned loops all the way down to 1 inch in diameter. Don ____________
Yesterday afternoon at around 3pm EST I tracked down a power pole 1.69 miles away from the QTH of KB9AX that was causing Dan RFI on 160 and 80 meters. Dan then reported the pole number to his utility
Numerous people asked for information about my portable terminated flag that I built for MF/HF direction finding since it's unidirectional and here is a link to a simple website I created to show my
Hi Jim, It all depends on frequency due to the change in gain of the terminated flag versus frequency and here is some initial info that might help. *If using a 20 dB preamp, below is the system gain
I made a quick video this afternoon showing my portable terminated flag versus one of my tuned loops on 80 meters. Here is the link to the video for those interested. https://youtu.be/yIWY2KwoZ8w 73,
I just uploaded a video on your tube that shows RFI that Mike (W9RE) has on 160 meters that we tracked down to a neighbors Comcast cable box and associated power supply. Here is a link to the video f
Hi Jim, Thanks. I know and follow your guidelines really well, but I have to tell you that when working in someones house that is not a hams we should not be installing anything special if at all pos
Hi Jim, I use google earth on almost every case to get distance and bearing and it sure is a great tool. Mikes property and his closest antenna in his EFBS receive array is about 50 feet from the nei
Hi Dave, I totally agree with your statements and similar to how I use my SDR gear. Thanks, Don _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contes
Hi Jim, Interesting that you mention V and H. There is an elusive signal W9RE and I have been chasing on 21MHz and just this morning I told Mike that we might considering looking at the signal using
I just uploaded a video on youtube showing 18 MHz RFI at KB9AX that I tracked down to one of his neighbors Sodium Vapor light poles. Here is the youtube video link for those interested. https://youtu
A little over a week ago I posted that we (W9RE & WD8DSB) tracked down RFI to a neighbors Comcast Cable Box or its associated power supply. We found the problem on a Friday, and on the following Mond
Hi Randy, You told me off line that you have S9+ noise on all HF bands. I see someone mentioned that you should read Jims (K9YC) paper on Killing Receiver Noise, and I suggest you first do what he re
Earlier this year I tracked down RFI on 160 and 80 meters to a power pole that's 0.5 miles from my house. A Duke Energy engineer met me at the suspect pole one month ago and quickly identified the pr
Hi Grant, Treadmills are notorious RFI generators due to their variable speed drives. I suspect you are onto something regarding what outlet it's plugged into versus how long the run is relative to r
Forgot to add the link to the treadmill youtube video I mentioned. Here it is: https://www.youtube.com/watch?v=VO5DcVSw3M0 73, Don (wd8dsb) _______________________________________________ RFI mailing