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1. LF: Signal detection question (score: 1): Author: edgar <[email protected]>; Date: Tue, 08 Oct 2013 11:26:35 +1100; Hi Group, I have recorded signals from HGA22, DCF39 and DK7FC from two antenna/receivers at different locations. The locations are 58 km apart. Recordings are 16 bits, mono, 22050 Hz, and 1.5 hours l; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-10/msg00206.html (10,625 bytes)
2. Re: LF: Signal detection question (score: 1): Author: "Markus Vester" <[email protected]>; Date: Wed, 9 Oct 2013 00:12:38 +0200; Edgar, this sounds like a very interesting concept, though perhaps not easy to realize. In principle, the two reference frequencies would allow you to measure and track both the samplerate ratio and; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-10/msg00583.html (15,307 bytes)
3. Re: LF: Signal detection question (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Wed, 09 Oct 2013 23:12:19 +0200; Am 09.10.2013 00:12, schrieb Markus Vester: [...] I have been following your experiments with interest. Looking at the two grabbers, Stefan was sometimes visible in Moonah but not (or at least not mu; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-10/msg00584.html (12,124 bytes)
4. Re: LF: Signal detection question (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Thu, 10 Oct 2013 14:19:51 +0200; Hi Dimitris :-) Yes, that would be a good idea, the cranes are 50m high! I would like to use one of them as an antenna :-) 73, Stefan Am 10.10.2013 07:48, schrieb Dimitrios Tsifakis: Hi Stefan, 2013/; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-10/msg00585.html (11,756 bytes)
5. Re: LF: Signal detection question (score: 1): Author: edgar <[email protected]>; Date: Thu, 10 Oct 2013 08:46:25 +1100; Hi Stefan and Markus, A comparison of DCF39 reception now and previously should give some indication of the propagation difference. Regards, Edgar Moonah, Tasmania.; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-10/msg00586.html (10,638 bytes)
6. Re: LF: Signal detection question (score: 1): Author: "Markus Vester" <[email protected]>; Date: Thu, 10 Oct 2013 00:19:38 +0200; Edgar, yes that would be interesting. Have you been keeping daily logfiles from the DCF / HGA plots? 73, Markus From: [email protected] edgar Sent: Wednesday, October 09, 2013 11:4; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-10/msg00587.html (12,112 bytes)
7. Re: LF: Signal detection question (score: 1): Author: "Markus Vester" <[email protected]>; Date: Thu, 10 Oct 2013 01:15:33 +0200; Edgar, are all the plots referred to 1 Hz NBW (not only the noise)? I think the signal lines are just the levels of the spectral peak in the narrow FFT, there's no need for scaling these with bandwi; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-10/msg00588.html (14,756 bytes)
8. Re: LF: Signal detection question (score: 1): Author: edgar <[email protected]>; Date: Thu, 10 Oct 2013 09:43:19 +1100; Hi Markus, This is the DCF39 plot from the best DK7FC signal capture last April, between 18:00 and 19:00 UTC. https://dl.dropboxusercontent.com/u/101251787/DCF39%20WR%20ver%20plot%202013-04-08%2021-3; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-10/msg00589.html (11,483 bytes)
9. Re: LF: Signal detection question (score: 1): Author: "Markus Vester" <[email protected]>; Date: Thu, 10 Oct 2013 00:16:48 +0200; Stefan, Edgar, of course I shouldn't have used the term "weakened" which is quite inappropriate for your signal ;-) Yes I agree that the little extra distance would hardly explain the SNR difference; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-10/msg00590.html (15,067 bytes)
10. Re: LF: Signal detection question (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Thu, 10 Oct 2013 00:51:58 +0200; Hi Edgar, Markus, Am 10.10.2013 00:43, schrieb edgar: Hi Markus, This is the DCF39 plot from the best DK7FC signal capture last April, between 18:00 and 19:00 UTC. https://dl.dropboxusercontent.com/u; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-10/msg00591.html (12,558 bytes)
11. Re: LF: Signal detection question (score: 1): Author: edgar <[email protected]>; Date: Thu, 10 Oct 2013 11:55:27 +1100; Hi Stefan, The Spectrum lab settings for the plots would not be the same. Regards, Edgar Moonah, Tasmania.; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-10/msg00592.html (11,036 bytes)
12. Re: LF: Signal detection question (score: 1): Author: Dimitrios Tsifakis <[email protected]>; Date: Thu, 10 Oct 2013 16:48:08 +1100; Hi Stefan, Are you trying to make a directional antenna using these as parasitic elements? :-) Mabe you can become friends with the operator and ask them to pull a wire up? :-) 73, Dimitris VK1SV; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-10/msg00593.html (11,724 bytes)

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