Hello Michel, Thank you very much for the interest and the appempt to catch the signal. It's the first time i read something from you (regarding the VLF tests) and i am generally impressed by the amo
Hi Michel, Our distance is 10 Lambda :-) This is very impressive with such a small antenna! In Pauls opinion it is a clear reception as well. He is surprised by the strong signals at your and Wolfgan
Mal, My next ecty will bemost probably in september. It will be on 8,97 and 6,47... But the grabbers are running all the time! 73, Stefan Am 07.08.2010 13:14, schrieb mal hamilton: VLF Is there any v
Hello Tony, Thanks for that interesting work! Could you extend the measurements to the VLF band? It would be interesting what the levels and directivity would be there. 73 and pse a sked for your upc
LF, The first time at all i saw a trace of a US station on 137 kHz. XGJ captued arround 4 UTC :-) My QRSS-120 window runs since 2 days... 73, Stefan/DK7FC Attachment: XGJ.jpg Description: JPEG image
VLF, He seems to send "N" in DFCW-3000. The dash is clearly visible in my 6000' window, the dot comes in now, although QRN ist starting to rise! He wrote me he has ~ 0,2 mW EMRP. 73, Stefan Am 29.08.
Hi Tony, This is very fine! Probably you monitored DHO38 @ 23,4 kHz (TX in nothern Germany). So it is once again confirmed that the antenna behaves rather like a loop antenna. Additionaly the signal
Dear LF, Currently i am setting up my active antenna for the planned LF grabber here in Heidelberg. It is an active E field antenna, using a BF981 and a 125 kHz signal that transforms the 137 kHz dow
Henny, Very impressing! Go on with that job! 73, Stefan Am 27.08.2010 11:16, schrieb henny van elst: Hello Warren,LF nice capture XGJ,strong signal Henny pa3cpm best 73s Het bericht kan nu met het vo
Dear LF/VLF group, Many thanks to all the people who tried to catch may signal in the yesterdays test! Thanks for taking the time to watch the QRG on a sunny sunday! The RX side is an important facto
Dear VLF, Today i spent some hours to do the next experiment with my earth electrode antenna that i have installed in a forest near Heidelberg. The 2 earth electrodes are about 600 m spaced, with 20
Dear group, Attached you see some pictures of the QRN Situation and my signal, received on my grabber in Heidelberg. To that time my grabber run in DFCW-240 mode,11,4 mHz FFT, so the S/N could have b
Ossi, Mni tnx for the test signal today and now! It is very useful during my works on the LF grabber RX. Due to that signal i found what the current problem might be. I am hopefully to slove the nois
Mal, Are you talking about a earth electrode antenna or your vertical antenna? I assume you mean the vertical ;-) You will get several kV, most probably above 10 kV rms on your antenna. That's why a
Dear LF/VLF, Yesterday und today the QRN levels are as low as never before since i am monitoring the VLF band. The noise at 6470 Hz is even 10 dB lower than during my test on 1st august, the DFCW-60
Hi Daniele, The older CTR monitor seems to have a "real" switch that yust disconnect the mains from the supply (like it should be!). As you said, there is QRM near the both monitors. The SMPS in the
Alex, Thank you for this chance you give us to see our signals in south America! Maybe QRSS30 is a little fast for EU but i will try it on the 4th of September :-) Best 73, Stefan/DK7FC Am 27.08.2010
Dear VLF, DF6NM is transmitting now on the Dreamers Band! His signal is copied on my VLF grabber in DFCW-600 and DFCW-6000. Distance seems to be arround 180 km! One more station who "cracked" the 100
Mal, I am using a galvanic decoupled primary winding at the bottom of the water barrel where the coil is wound on. Adjust the primary number of turns so that enough power is fed into the system. Watc
