This past weekend I encountered interference on 160 meters that I tracked down to a neighbors Nintendo 3DS after market power supply. Full details can be found on a simple website I created to docume
Quick estimate puts the signal at a heading of approximately 75 degrees from Fishers Indiana which is just NE of Indianapolis Don wd8dsb _________________ Topband Reflector Archives - http://www.cont
John W1FV, You and I are in very close agreement on heading because you are 73 degrees from me and we are both saying approximately 75 degrees. I can hear it on numerous web SDR receivers that are lo
Hi Mike and gang, I have been monitoring the signal during the early hours of this morning and on web SDR in England it was there at 3am EST but when I checked again at 4:20am EST it was no longer be
Copying the signal again this evening from Indianapolis area at 8:45pm EST (0145 utc) Heading is again approximately 75 deg. Don wd8dsb _________________ Topband Reflector Archives - http://www.conte
Hi Doug Last night I told w1fv that my estimate was 70 to 75 deg from my location in Fishers IN and a heading of 70 deg from my location clips the bottom tip of Nova Scotia, while 75 deg runs me thro
Update on the apartment complex noise that I tracked down to a new apartment complex in late October. Finally was able to meet with the maintenance manager for this facility this past Thursday, and w
Mfj Nuller will not work because the signal is in the same direction of my 300 deg pointing pennant. My guess is that we should be able filter and shield properly at the source _________________ Topb
Hi Tom, Thanks, and my statement was too broad. In my case I am unable to meet the conditions you mentioned (my sense antenna would not be much closer to the noise, and it would not pick up the noise
Hi Doug, Thanks for the follow up. I was saying 70 to 75 degrees, and 70 degrees from my location puts me right where the W1FV 75 degree line passes below the location you have identified. Interestin
For many years my wife's treadmill caused strong interference on 160 meters when it was in use, and yesterday I was able to completely eliminate the RFI using a combination of two different filters (
of Internet spotting. I'm not going to say the change is good or bad, just that it has really changed things. I enjoyed tuning up and down the band for hours on end with the objective of "the early
Treadmill combination filter update. Today I replaced the 10 amp commercial filter with the 20 amp version of the filter, and the results are similar. Below are a few measurements on 160 meters and 8
Hi Brad, Great to hear you had similar results. The 20VR1 and the 20DRGG5 filter appear to be of very similar design (two stage filters, and component values not vastly different). The 20VR1 looks to
You might consider building a W7IUV preamp. It is a very easy to build boradband preamp that you can build using double sided circuit board in which you can easily cut in the pattern on one side of t
Hi Jim, As of the last log updates for K1N, NA was 89.8% (not 99.5%) and Europe was 7.8% of their 80 meter contacts. Also suspect the Eu numbers will continue to rise as less and less NA stations wil
Hi Charlie and gang, It is not that simple and I am a guilty party of early on dupes on 160 meters with K1N because of the following. Early on 160 meters the jamming was horrible so it was impossible
Data from another treadmill RFI success story. A few days ago Lionel (N5LB) added filters to his treadmill based on what I had done to eliminate RFI from my wife's treadmill, and below are his very s
Things are pretty slow on the topband reflector, so thought I would take the opportunity to comment about, and thank Luis (HC1PF) regarding his great signal on 160 meters using his Inverted L with FC
I've not reported on this issue in a long time, but finally making progress with interference that's originating from an apartment complex 0.4 miles away. Back on Dec 11, 2014 we (myself and the apar