Thanks Andy for the hint. I have updated the opds templates at https://dl.dropboxusercontent.com/u/26404526/callsloc.txt (LF, 46 entries) and https://dl.dropboxusercontent.com/u/26404526/callsloc8.tx
Hi Domenico, this may have been due to crossmodulation from the receiver AGC, which is visible in the spectrogram: Whenever the strong signals from SV3DVO and IW4DXW were present simultaneously, ther
474.2 kHz USB "dial" + 1.4...1.6 kHz audio = 475.6...475.8 kHz RF 73, Markus From: [email protected] mal hamilton Sent: Sunday, November 30, 2014 8:15 PM To: [email protected] rsgb_lf_
Hi Warren, Paul, I'm pasting two earlier mails to the group and to Dex, which should give an idea of the transmit setup using Paul's FEC-encoded BPSK. Best 73, Markus (DF6NM) Von: Paul Nicholson <vlf
Since about 12:30, someone seems to be transmitting on 8270 Hz: http://abelian.org/vlf/fbins.shtml#p=1417438800&b=110&s=sp (strong) http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.htm
Paul, once more, very impressive work! I'm tempted to call that a TA first for Dex and Wolf, and Renato at even larger distance is getting very close. But most of all, I think it's the cooperative ef
Hi Joe, sounds like a fierce fire-spitting dragon... What is the nature of that hiss, and can you identify which component is actually producing the acoustic emissions? High voltage discharges at the
Hmm 8820 Hz is a 60 Hz multiple, so maybe not the best choice for American observers. On the other hand, the trace at Forest seems to be too stable for a direct mains harmonic. What I often see here
Hi Jim, resolution (715 uHz bin width), Your resolution is actually similar enough to Paul's 833 uHz bins, and the excursion on the unid signal (around 0.010 Hz, not uHz) would be clearly visible. Co
Laurence, Stefan, very nice! According to the database, you've actually managed three successful decodes in a row. Congratulations! Best 73, Markus (DF6NM) 2014-12-13 02:30 DK7FC 0.137610 -37 0 JN49i
Hi Rik, Stefan, back in 2002, some of us were given the rare opportunity to use the Donebach antenna for one summer afternoon (see emails below). At the time we also considered trying 8970 Hz there.
Laurence, UW8SM is usually a strong signal here but no indication of a transmission at that time and frequency, so almost certainly a false positive. Opds detections with correlation marginally above
Two consecutive Op-32 transmissions from SV8CS, showing an unusual step in frequency and in fieldstrength: 2014-12-21 19:56:53 SV8CS 1506km 137519.965Hz 12mHz -26.8dBOp 69% 21.5dB 2014-12-21 19:22:44
The "MX" beacon on VO1NA's usual frequency 137.777 kHz was visible here all night from 20 to about 9 UT, best from 2 to 7 UT. Merry Christmas to all! 73, Markus (DF6NM)
Joe, thanks for the signals! I was amazed it that the trace was visible for so many hours in 0.438 mHz. Sorry, not much to report from last night: The old and faithful grabber computer decided to swa
It looks like Edgar J. Twining may occasionally be getting a glimpse from DCF39 via the long path to Orford/Tasmania, about 23.6 megameters! Please have a look into the folder df6nm.bplaced.net/LF/lo
Hi Hartmut, Christian, these periods of DCF39 "hyperactivity" usually last for about 70 minutes, so should soon be over... Best 73, Markus From: [email protected] Hartmut Wolff Sent: Monday, December 29
