Hi Stefan ! The maximum antenna current was about 500mA but at this power the transistors got very hot, showing that there is still something wrong with the matching. My usual PA has an output resist
Hi Stefan! Not sure about the settings. Basically I used the template of my VLF-Grabber for the 6000-Window and adapted the setting accordingly. Actually, the file in the attachment was my QRSS100 se
Hello Eddie, group! Thank you for watching out. Unfortunately I had no luck today. There is nothing of my signal seen on your grabber. Lubos left a clear trace. I noticed that my signal is fading out
Hello Markus! I also thought about a coupling of antennas after playing around for a while in SpectrumLab. I had to set up the DFCW30 Window because I usually do not run one on my grabber. The signal
Jacek ! I will do my best to announce the tests earlier but there are sometimes some problems. It has to be dry that day and the wind must not be strong. And of course I must have the time to carry o
Peter! Never mind! As Stefan has already explained, "VLF" in this context means lower than 9khz. I will not tell the exact QRG but it will be very close to 8970, of course. Some mHz below or above. 7
Thanks everybody who put some effort in receiving my signal. I will try to keep the transmission up as long as possible. PA is cool, wind is low and in general the WX-conditions are very well. The in
Hello Lubos ! Thank you for the report. I had to stop for a while to fix something with the antenna. If you look at your grabber you see that the spectrum of my signal is broad. I hope this problem i
Hello Peter ! Well a map would be a bit of an overkill. As far as I know, my signal has been clearly detected by OK2BVG, DF6NM, DK7FC and by Paul Nicholson in Todmorden. http://abelian.org/vlf/fbins.
Lubos, Stefan! Very well Lubos! I'm looking forward to see your signal. QRSS30 would be a good option and DFCW30 is even better, as Stefan proposed. I propose the following: 800z: I will "tune in" fo
Hello group! I was not able to copy Lubos signal for QSO and so I also switched on my TX. I will send a carrier on 8970.01 for the next hours. 73 OE3GHB Gerhard Am Samstag, den 10.03.2012, 10:27 +010
Hello Markus, VLF! This might be true at least partially. In my setup, I'm observing acoustic noise without the presence of corona discharges. I observed my antenna in the dark, running about 600mA o
Stefan! You are right! I did some tests today on VLF to make sure everything is working for my planned VLF-transmission tomorrow as announced here previously. Compared to the setup used last season,
Hello Markus! This signal is from Lubos. I have a hard time to copy his signal here in DFCW60 Mode. He is transmitting a carrier, I try to optimize my settings and we are hoping for some db of noise
Hi Stefan! Again, I just had the intention to switch off but consdering your test, I will keep on txing for a while. Gerhard Am Samstag, den 10.03.2012, 17:06 +0100 schrieb Stefan Schäfer:
Hi Markus! You are right, I did a test in the afternoon. I obtained a Audio-PA (Warwick Sweet15) from the scrap-yard last week and both of the complimentary power-transistors were dead. I replaced th
Dear group ! I plan to do a VLF-transmission tomorrow starting at approx. 8z. The QRG will be slightly above 8970, most probably 8970,01. I did some tests today to ensure everything is working as exp
Hi Mal! Tnx for listening (watching)... It's OK2BVG you are seeing. Hopefully my signal would appear on 8970.01 soon. Otherwise, I will have to improve my antenna. 73 es tnx OE3GHB Gerhard Am Samstag
Stefan ! I think WE ARE researchers in some way. Maybe not all of us do have the theoretical background which is "necessary" do to "real" research (whatever that means) but sometimes I think this cou
Hello Geri! I'm using this reflector now for a couple of years and I don't receive spam-mails at all. So the reflector is for sure NOT the reason for the spams you receive. I also never experienced s
