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1. Re: LF: Slow PSK result (score: 1): Author: John Andrews <[email protected]>; Date: Sun, 19 Feb 2006 02:29:49 +0000; Markus, I apologize for the late response -- we were out this evening. I won't be running tonight, but may be back tomorrow night. Not sure of the frequency yet, but will advise on Sunday. John A.; /rsgb_lf_group-archives/html/rsgb_lf_group/2006-02/msg00178.html (9,180 bytes)
2. Re: LF: Slow PSK result (score: 1): Author: "Scott Tilley" <[email protected]>; Date: Sat, 18 Feb 2006 16:19:50 -0800; Hartmut/Markus TIL will go into key down mode on 137778.00Hz and will phase shift on the following sked starting at 0100UTC. H, H+15, H+30, H+45 I have concerns on the ability of my antenna matching; /rsgb_lf_group-archives/html/rsgb_lf_group/2006-02/msg00181.html (13,151 bytes)
3. Re: LF: Slow PSK result (score: 1): Author: [email protected]; Date: Sat, 18 Feb 2006 19:04:44 EST; Hi Scott, thank you very much. As I don't currently have a way to lock the receiver and soundcard to GPS, the best I can do is narrow spectrograms, and there are no magic numbers regarding frequency; /rsgb_lf_group-archives/html/rsgb_lf_group/2006-02/msg00182.html (10,081 bytes)
4. Re: LF: Slow PSK result (score: 1): Author: Hartmut Wolff <[email protected]>; Date: Sun, 19 Feb 2006 00:56:38 +0100; Scott, I'm interested in a key-down test, too. 73 Hartmut; /rsgb_lf_group-archives/html/rsgb_lf_group/2006-02/msg00183.html (9,050 bytes)
5. Re: LF: Slow PSK result (score: 1): Author: "Scott Tilley" <[email protected]>; Date: Sat, 18 Feb 2006 15:16:18 -0800; Markus Very interesting and a neat way to display the information! If you like I can place TIL on this evening starting at local sunset ~0100UTC on a different frequency then John. I'd like to do som; /rsgb_lf_group-archives/html/rsgb_lf_group/2006-02/msg00184.html (11,726 bytes)
6. Re: LF: Slow PSK result (score: 1): Author: [email protected]; Date: Sat, 18 Feb 2006 17:15:52 EST; Dear John and LF, based on an idea by Peter Martinez, I then tried to despread the PSK signal by multiplying with a 15+15 minute (+1, -1) sequence before doing the Fourier Transforms. This works as e; /rsgb_lf_group-archives/html/rsgb_lf_group/2006-02/msg00186.html (9,566 bytes)
7. Re: LF: Slow PSK result (score: 1): Author: John Andrews <[email protected]>; Date: Sat, 18 Feb 2006 20:13:51 +0000; Markus, That's a great shot -- thanks for your creativity. Was that done through a sound card, or an external A/D? John A.; /rsgb_lf_group-archives/html/rsgb_lf_group/2006-02/msg00187.html (9,101 bytes)
8. LF: Slow PSK result (score: 1): Author: [email protected]; Date: Sat, 18 Feb 2006 14:53:46 EST; Hi John and LF Group, here is the result from last night's recording of John's slow PSK transmission: This ultra-narrow spectrogram has a resolution of 0.329 milliHertz (16 times finer than Argo 120); /rsgb_lf_group-archives/html/rsgb_lf_group/2006-02/msg00188.html (9,376 bytes)

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