Hi VLF, Since 23 UTC a 700 mA carrier is running on 17.4701 kHz! It is a little surprise to the VLF community i think ;-) Legal? Yes: http://www.iup.uni-heidelberg.de/schaefer_vlf/VLF/17,47kHz_Sonder
Yeah it's there! More than 20 dB SNR at DL0AO: http://df6nm.bplaced.net/dl0ao/VLFgrabber/vlfgrabber_dl0ao_test.htm Excellent activity! 73, Markus (DF6NM) --Ursprüngliche Mitteilung-- Von: DK7FC <selb
Hello Markus, thanks for the feedback. Wonderful, now it is 30 dB in 424 uHz. DL0AO could run a 3.8 mHz '600' RDF spectrogram and a phase and signal level plot, so we could see propagation effects mu
Hi Stefan I didn't quite believe what I was reading you may like to take a look at my Grabber. http://www.qsl.net/g3zjo/vlfgrabber 73 Eddie On 27/11/2017 09:34, DK7FC wrote: Hello Markus, thanks for
Left it on overnight. Would you like it on 24/7, I see diurnal variations similar to Marcus but more pronounced due to my lower signal strength. 73 Eddie On 27/11/2017 20:30, g3zjo wrote: Hi Stefan I
Hi, What antenna and RX are you using for VLF, Eddie? 73, Dave G3WCB IO80EI From: [email protected] [mailto:[email protected]] On Behalf Of g3zjo Sent: 28 November 2
Hi Dave Stefan's e-probe design for 8.7kHz antenna and sound card RX. The BPF in the probe has quite some cut off outside sub 9kHz but maybe that's good due to the adjacent big boys. 73 Eddie On 28/1
Congratulations Eddie J A nice and clear trace in your spectrogram I’m still digging in to get a trace. Got some pixels at 179uHz but nothing clear enough I have almost double distance to Stefa
Hi Luis Good Luck. Keep trying, don't give up. Consider it a gift to be twice as far away, more challenge :-) 73 Eddie On 28/11/2017 12:13, VIGILANT Luis Fernández wrote: Congratulations Eddie A nice
Attached is a plot from the DL0AO cardioid, showing yesterday's diurnal amplitude and phase changes. Good traces are also continuously visible on the G3ZJO and DF6NM VLF-grabbers. Hope that someone f
Hi VLF Got some pixels at the right place in the 47uHz spectrogram at 100 minutes per pixel The 179uHz spectrogram at the end of the page is also showing something. But a lot of imagination is needed
Hi Stefan, VLF I got your signal in JN64bw, dear Stefan. Depending on the QSB and/or QRN, you're peaking 15dB over noise. Fantastic! :-)) I'm using my LF antenna tuned on your QRG with a (approx.) 20
Hello VLF freinds, I spent some day in Berlin, thus the late reply, sorry. The carrier is actually running since 25.Nov 23 UTC witout any interruption! I have/had control over the TX via the samrtpho
GE dears, I'm also following your TX, Stefan, with a 424 uHz grabber with no result at the moment. I'll try also the 42 uHz one. As antenna I'm using the MF TX marconi because whip and loop are ready
Hello VLF, The TX was switched OFF at 19 UTC, so the carrier was on air for 116 hours :-) Since 20:30 UTC it is now back at 1 A antenna current, 3 dB more. The QRG is still 17.470100000 kHz 73, Stefa
Hi Stefan, good to see the carrier back, I've already been missing that cheerful green trace on DL0AO ;-) But it looks like the phase is inverted now. Did you happen to change something about the pic
...there has been an interruption of the carrier between 23:00...23:50 UTC. It is now back with opposite phase, i.e. the same phase as during the 700 mA test. 73, Stefan Am 30.11.2017 22:21, schrieb
There were a number of interruptions. The carrier stopped arround 4 UTC. It was restarted arround 9 UTC but stopped again 20 minutes later. The reason is heavy snow which triggered the safety functio
Dear VLF'ers, Stefan, Here is the result of the 424 uHz at the moment, I don't know if this could be your signal but I suppose that ther is a good possibility. I had trouble with 47 uHz grabber so on
Well done Stefan! The DFCW message was very well visible at DL0AO in Amberg: http://df6nm.bplaced.net/VLF/screenshots/dl0ao9_171201_1445.jpg but pretty marginal here at DF6NM in suburban Nuremberg: h
