AD6E and I both experienced a very weird phenomena during the first hour of CW NAQP on 10M. For a number of QSO's, the contest exchange just sent came back as a very loud received signal, most of the
That would explain why you tried to dupe me every 5 minutes for the duration of the contest. LDEs return. It was UFOs, Tom. Thanks for the QSOs! Mark, N5OT of back sounding like radio have it -- The
While I didn't experience the delay that Tom did, during that first hour that he mentioned on ten I did notice something strange. My own signal with slight delay returning by scatter was so bad that
There ARE such things as Long-Delayed Echoes (LDE's). I have heard them a few times, even back in the days when there was no digital equipment to spit back what it just received. Conditions may have
Tom, I've heard this type of phenomena a couple of times from N2RM on 15m. I don't know what caused the "reflection" of my signal back, but the time I heard it the most at N2RM - was maybe 10 years a
-- Well, I've heard my own signal as a LDE twice in 48+ years. But there is no way that a complete CQ could be a LDE. Whoever suggested some clown was recording it and then playing it back is probabl
So far, the phenomena was experienced by W7RN, K3WW, K0VBU and ND6E. K7SV reported echoes that sound more like multipath scatter than what the rest of us reported. After long discussions about Long D
Back in the late 60's I heard an LDE that had about a 10 second delay and was a repeat of everything I and the station I was working sent for about 3 minutes. We were both pretty freaked out by it. I
Thomas: This was your opportunity to work yourself. Sort of a unique unique, something for the log-checkers to hyperventilate over. Think teeter-totter, or an M.C. Escher drawing. This could lead to
This does happen guys, I along with K7SS from WWA using dipoles and 100 W on 80 M experienced it one evening several years ago, with a complete call sign coming back. Maybe with gain ant and power we
I remember hearing some discussion of a LDEs on 160 meters a few years ago. I thought it sounded very strange until I experienced it on that band. The delay was at least one second. Of course, I have
OK, let's think about it. Radio waves travel at the speed of light, and a 10 second delay would translate to about 1.86 billion miles before it was again heard. That is approximately the distance to
I have seen several theories for LDE's. The most plausible was a Ph.D. thesis done at Cal Tech, I believe, back in the mid-70's. I wish I had a copy of it. A fellow grad student in radio science at t
Damn, things have gotten a lot faster than when Mrs. Schneider taught me about the speed of light back at Wildwood School, Dist 28. Back then light was only traveling at 186,000 miles per second, bu
Guys, it's early in the morning, and with all due respect to Dr. Einstein, and Hans, I did add an extra 0 to my numbers. Been watching too much Star Trek. GM Ed -- The world's top contesters battle i
I think it is probably Pres. Bush's fault :-) Tom W7WHY -- The world's top contesters battle it out in Finland! THE OFFICIAL FILM of WRTC 2002 now on professional DVD and VHS! http://home1.pacific.n
K4SB contributed: OK, let's think about it. Radio waves travel at the speed of light, and a 10 second delay would translate to about 1.86 billion miles before it was again heard. That is approximatel
I'll have to admit that I have done a LOT of work on 10 meters in the last 47 years, including many contests (W5PR, KZ5MM, KE5FI, WA5IHS, DL4FQ etc) and I have never heard an echo longer than about h
This has been a quite interesting thread. Here is one realistic possibility - it was man-made, intentional, but the culprit was not a contester or ham at all. Given that it happened in the CW portion
Re W7RN's echo experience, I don't get all this tooth grinding over solar system distances and conspiracy theories. Isn't this really a metaphysical question? To wit: A valid contact is a 2-way conta