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1. Re: LF: vlf experiments-numerical considerations (score: 1): Author: Jacek Lipkowski <[email protected]>; Date: Sat, 30 Oct 2010 09:10:21 +0200 (CEST); All very interesting, i cannot stop thinking about ;-) Your plot_80km.png tells me that in 200 km distance (pretty close to DF6NM/DJ2LF/DK6NI/DJ6LB), 2500 Hz is the most suitable frequency. i'm not; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00068.html (12,919 bytes)
2. Re: LF: vlf experiments-numerical considerations (score: 1): Author: pws <[email protected]>; Date: Fri, 29 Oct 2010 17:20:04 +0200; Hi Jacek, @Piotr: tnx fer code! Yes, I'm very interested, especially in the makefile since I'm having trouble invoking the GCC against those code. More than 30 years ago dealing with Fortran - on a b; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00129.html (10,457 bytes)
3. RE: LF: vlf experiments-numerical considerations (score: 1): Author: Laurence KL7UK <[email protected]>; Date: Fri, 29 Oct 2010 10:23:46 -0800; Make it 8000Kms :-) Laurence KL7UK =; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00136.html (12,442 bytes)
4. Re: LF: vlf experiments-numerical considerations (score: 1): Author: pws <[email protected]>; Date: Sat, 30 Oct 2010 15:26:49 +0200; Hi Jacek, Working fine; test and examples too. Had to replace "f95" by "gfortran" in the makefile. Thanks a lot! Peter; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00157.html (11,091 bytes)
5. LF: vlf experiments-numerical considerations (score: 1): Author: Piotr Mlynarski <[email protected]>; Date: Fri, 29 Oct 2010 07:45:08 +0200; Dear LF Group, Dreamers Recently, after 7th Stefan experiment on VLF band i came back to the numerical programme i have written few months ago which gives us some insight about the e-field strength p; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00193.html (13,696 bytes)
6. Re: LF: vlf experiments-numerical considerations (score: 1): Author: Jacek Lipkowski <[email protected]>; Date: Fri, 29 Oct 2010 14:58:10 +0200 (CEST); this is a nice plot showing field strength vs frequency and distance, calculated from Piotr's code. please notice that for a given distance there are two frequencies which yield the highest field str; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00262.html (10,467 bytes)
7. Re: LF: vlf experiments-numerical considerations (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Fri, 29 Oct 2010 19:09:34 +0200; Hi Jacek, Could you create a picture like plot_80km for distances up to 5000km? I think i do not want to start simulating, my job is in the field ;-) But you have done it and may generate it easily?; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00285.html (12,177 bytes)
8. Re: LF: vlf experiments-numerical considerations (score: 1): Author: Jacek Lipkowski <[email protected]>; Date: Fri, 29 Oct 2010 23:36:11 +0200 (CEST); Could you create a picture like plot_80km for distances up to 5000km? sure jacek Attachment: plot8000km_80km.png Description: Binary data; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00306.html (10,342 bytes)
9. RE: LF: vlf experiments-numerical considerations (score: 1): Author: Jacek Lipkowski <[email protected]>; Date: Fri, 29 Oct 2010 23:38:17 +0200 (CEST); Make it 8000Kms :-) sent it to the list. attached is a plit of field strength vs frequency at 8000km distance, and at 5000km for comparison jacek Attachment: fs_8000km.png Description: Binary data A; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00408.html (11,164 bytes)
10. Re: LF: vlf experiments-numerical considerations (score: 1): Author: Jacek Lipkowski <[email protected]>; Date: Sat, 30 Oct 2010 17:23:53 +0200 (CEST); Working fine; test and examples too. Had to replace "f95" by "gfortran" in the makefile. maybe i should put some crude autodetection hack in the makefile? Thanks a lot! thank Piotr - it's his code,; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00447.html (11,429 bytes)
11. Re: LF: vlf experiments-numerical considerations (score: 1): Author: pws <[email protected]>; Date: Sat, 30 Oct 2010 14:03:05 +0200; Hi Jacek. Tnx for your link! Using "GNU Fortran (SUSE Linux) 4.5.0 20100604 [gcc-4_5-branch revision 160292]" it does not compile. I'm getting: ... gfortran -O2 head.f propvlf.f -o wavevlf propvlf.f:; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00493.html (10,891 bytes)
12. Re: LF: vlf experiments-numerical considerations (score: 1): Author: Jacek Lipkowski <[email protected]>; Date: Sat, 30 Oct 2010 14:39:12 +0200 (CEST); Using "GNU Fortran (SUSE Linux) 4.5.0 20100604 [gcc-4_5-branch revision 160292]" it does not compile. try this: http://www.lipkowski.org/~sq5bpf/vlf/wavevlf/wavevlf_ext2_unix.tar.gz it works under t; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00595.html (11,161 bytes)
13. Re: LF: vlf experiments-numerical considerations (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Sat, 30 Oct 2010 00:10:43 +0200; Hi Jacek, All very interesting, i cannot stop thinking about ;-) Your plot_80km.png tells me that in 200 km distance (pretty close to DF6NM/DJ2LF/DK6NI/DJ6LB), 2500 Hz is the most suitable frequency.; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00639.html (13,631 bytes)
14. Re: LF: vlf experiments-numerical considerations (score: 1): Author: Jacek Lipkowski <[email protected]>; Date: Fri, 29 Oct 2010 22:57:16 +0200 (CEST); Yes, I'm very interested, especially in the makefile since I'm having trouble invoking the GCC against those code. More than 30 years ago dealing with Fortran - on a block heating station named PDP-; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00691.html (10,828 bytes)

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