Stefan; Seems that right before dark is best. Jay set that up for us and had me start early afternoon and through to 2400 as you saw. That gray line might be the key to the VLF propagation, at least
Paul, Thank you for the excellent data and processing, and the inspiring results! Bob, thank you for your TX work and excellent signal! I should leave well enough alone but: The nominal (which never
Paul; Those are phenomenal captures!!! I never expected that kind of results especially so quickly-Bob > Date: Mon, 3 Mar 2014 21:05:14 +0000 > From: [email protected] > To: rsgb_lf_group@blackshee
Thanks Paul and I will be back when I am ready for something new and better! Bob > Date: Mon, 3 Mar 2014 23:20:39 +0000 > From: [email protected] > To: [email protected] > Subject: Re: L
Hello Bob, Excellent results on Paul's grabber! I'd suggest to try to leave a trace in daytime! The 10 km wave may behave different to 137 kHz or 74 kHz! 73, Stefan/DK7FC Am 03.03.2014 02:26, schrieb
I made a spectrogram of the Morse transmission using a transform width equal to the 180 second dot length, advancing the transform by 60 seconds each time http://abelian.org/vlf/tmp/29499_140303_180_
The two successful transmissions are nicely framed now in the spectrogram at http://abelian.org/vlf/sg29499.shtml A chance to save the image for posterity. -- Paul Nicholson --
You have such a good signal it is hard to miss. Saturating the spectrogram here at 13dB S/N and the actual level is around 21dB in 278 uHz bandwidth. I knew we were onto a winner at about 03:00 the o
Yes I mean no window at all. When I tried some other windows the S/N went down a little. Some windows compared: http://abelian.org/vlf/tmp/29499_140303_180_90_windows.png and I've ranked them in desc
