Hi Alan, have a look here : http://hamwaves.com/antennas/gnd-sigma/vlf_mf_ground_conductivity_atlas.pdf 73, Rik ON7YD - OR7T Van: [email protected] [[email protected]] Ver
Hi Jay, maybe the Opera signals traveled through a Einstein-Rosen bridge ;-) 73, Rik ON7YD - OR7T Van: [email protected] [[email protected]] namens jrusgrove@comcast
Hi Gary, my guess is M0DSZ in IO82LU (http://www.hamqth.com/M0DSZ) 73, Rik ON7YD - OR7T Van: [email protected] [[email protected]] Verzonden: maandag 29 september 2014 21:
Hi Stefan, for the broadcasters LF (and MF) is the past. LF / MF transmitters and their antennas are very expensive to maintain and these days the audience is small. More and more LF / MF broadcast s
Hi Stefan, any chance to use the Donebach antenna on 8.9kHz? Even at that frequency the radiation resistance might be close to 0.1 Ohm! 73, Rik ON7YD - OR7T Van: [email protected] [o
Hello Hans Albrecht, I do use T200-2 cores for 472kHz. At 600W output a single core gets lukewarm at good SWR but rather hot at SWR > 2. As I had a stock of T200-2's available I did glue 2 T200-2's,
Stefan, some patience might help. Wait for the next sunspot minimum. In 2008 transatlantic WSPR was very common, even for stations with just some 100 mW ERP. 73, Rik ON7YD Van: owner-rsgb_lf_group@bl
Hi Stefan, I wasn't saying that propagation on 472kHz is the same as on 1800kHz. For sure it isn't. Just that the current winter condx are far worse than the 2008-2009 season was, when lots of EU WSP
Hi Stefan, your beacon is booming S9 here. Also good CW activity at the lower band end. About beacon band: 474-475kHz seems OK although the upper end comes a bit close to the digital mode segment (la
I just noticed some kind of digital transmission on 472.7 kHz, but couldn't figure out what mode. Anyone to claim this transmission? 73, Rik ON7YD - OR7T
Hi Stefan, what I saw/heard was not hell and also on a very different frequency (472.7 kHz). 73, Rik ON7YD - OR7T Van: [email protected] [[email protected]] namens D
Hello Daniel, it was not your transmission I saw but DL6TY in PSK31 on 472.7kHz. But I you let me know when you rae transmitting I can give it a try. 73, Rik ON7YD - OR7T Van: owner-rsgb_lf_group@bla
I am sorry to hear about the passing of André, N4ICK. I did meet André serveral times when he was in Belgium to visit his relatives and it was always a pleasure to talk with him. Often about technica
Hello Joe, a faint trace is starting to pop up on 477.7 73, Rik ON7YD - OR7T ________________________________________ Van: [email protected] [[email protected]] name
Hello Joe, now peaking 529 but a lot of QSB. 73, Rik ON7YD - OR7T ________________________________________ Van: [email protected] [[email protected]] namens jcraig@m
Joe, right now your signal is down, but I will listen for you the next 30 minutes or so before going to bed. 73, Rik ON7YD - OR7T ________________________________________ Van: owner-rsgb_lf_group@bla
Joe, the signal is building up! I will listen for your CQ until 00:30 UTC. 73, Rik ON7YD - OR7T ________________________________________ Van: [email protected] [owner-rsgb_lf_group@b
Hello Joe, your signal was down in the noise again, I could still see the trace but no aural copy. I had a couple of good aural copy periods each 5 to 10 minutes long. If we had catched one of these
Hello Spiros, your signal is solid O and most of the time audible. 73, Rik ON7YD - OR7T Van: [email protected] [[email protected]] namens SV8CS-Spiros Chimarios [zan
