Joe, the 0.1 Hz spaced sidebands were probably not caused by the TX, but related to the RX noise blanker being periodically triggered by DCF39 bursts. They were probably just being smeared out when t
Hi Joe & Joe, these are two separate effects: The 0.1 Hz sidebands on strong amateur signals are created by DCF39's telegrams, periodically activating the noiseblanker every 10 seconds. They may incr
Last night (Feb 3/4) Joe's TX signal was perfectly stable again. But not on my grabber - unfortunately my receiver had been around 20 mHz low and drifting, caused by a loose solder joint on the BNC p
Nice capture of Wolf on Stefan's MF Grabber! 73, Markus (DF6NM) From: [email protected] Fausto Coletti Sent: Thursday, March 05, 2015 9:49 PM To: [email protected] rsgb_lf_group@black
It's a beautiful moonlit night... Starting 23 UT, I intend to send my callsign every hour on 136.1725 Hz, DFCW 90. All reports and captures welcome! Anyone to join in? Best 73, Markus (DF6NM)
Hi Jay, thanks very much for your capture, it's much appreciated! All seemed to be working well here, ERP just under a watt, and no fires. All the best, Markus From: [email protected][email protected] Sent:
Oops, excuse me Joe for having mixed up first names! Guess I need more coffee... Thank you for taking a break to look out for my transmissions. Around 3 and 5 UT, your signal was strong enough here t
doesn't the E layer absorb it? In the daytime, the lower D-layer becomes conductive enough to intercept and reflect (rather than absorb) LF. The reflectivity may be further enhanced by increased irr
Bob, a lonely "X" appeared here on 137778.2 around 2:12 UT https://dl.dropboxusercontent.com/u/26404526/LF_old/TA_0400.jpg, as well as a nice continuous trace in the 438 µHz grabber panel throughout
Hi Hugh, maybe there was no one transmitting... During the last couple of days, both PSKreporter and opds-32 have been almost bare of LF Opera spots, with the exception of a single RN3AGC sequence at
Hi Stefan, good idea! I started to transmit on 137622, using same full and half hour time slots as you to minimize possible mutual desense. Best 73, Markus (DF6NM) From: [email protected] DK7FC
Thanks Dave, nice to see that! I'll probably have to take a break after midnight as it is about to start drizzling, and I dare not leave the TX on when the antenna is wet. All the best, Markus (DF6NM
Hi Dex, time flies... nice to see you again also in Nuernberg! Can't boast to have received a complete sequence, but at least traces of an "X", a good "K", and a somewhat recognizable "O" around 5 UT
Hi Bob, Dex, last night I got a readable signal from XEB around 5 UT, but this time only traces from XKO. No need to QSY as there's more than enough separation in a QRSS-60 window (XEB 137778.000, XK
Joe, thanks, good that you are intending to get on, despite those difficulties! I hope we can catch possible irregularities on your signal tomorrow morning. Of course it would be ideal to have that s
Yes grabber is working ok but not a trace here yet, propagation must indeed be down. DF2JP http://www.df2jp.dxx.eu/lwgrabber.html shows a relatively weak and spread out signal on 137777. Northerly Lo
Joe, great! We'll see whether we'll see something ;-) The visual eclipse started here a few minutes ago. Perfect sunny weather, now off to the garden with the scope and the attenuator foil. Thanks a
Today's solar eclipse had a very significant impact on 100 kHz propagation. I ran another instance of my Loran monitor http://www.df6nm.de/LoranView/LoranGrabber.htm to observe ten European stations
Just came across at an excellent web paper by Micha Sanders (PC4M, PA3BSH) http://misan.home.xs4all.nl/eclipse.htm, dealing with observations of the HBG 75 kHz time signal during the 1999 solar eclip
Peter, thanks for sharing this plot! The intense and well defined peak would indeed suggest something like a focal point sweeping over the receiver. The 1999 eclipse must have had almost ideal geomet
