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Total 6 documents matching your query.

1. Re: LF: Opera speeds (score: 1): Author: Andy Talbot <[email protected]>; Date: Fri, 20 Jan 2012 17:18:43 +0000; Curiouser and curiouser. The dB values ought to be the same whatever the mode. The assumption that it was normalised to 2500Hz automatically would have assured that. But you have a very clear differe; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-01/msg00165.html (12,269 bytes)
2. Re: LF: Opera speeds (score: 1): Author: "Mike Dennison" <[email protected]>; Date: Fri, 20 Jan 2012 16:17:31 +0100; Ah. That's interesting. I will repeat my tests over the weekend and report back. Mike ==; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-01/msg00537.html (10,880 bytes)
3. Re: LF: Opera speeds (score: 1): Author: Albert <[email protected]>; Date: Fri, 20 Jan 2012 17:58:27 +0100; Mike, Andy Reports from today. I was curious what the difference would be between op8 and 32. 13:58 136 PA0A de G3XDV Op8 465 km -14 dB in Welwyn, IO91VT 13:49 136 PA0A de G3XDV Op32 465 km -7 dB in; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-01/msg00548.html (10,834 bytes)
4. Re: LF: Opera speeds (score: 1): Author: "Graham" <[email protected]>; Date: Thu, 19 Jan 2012 18:17:30 +0100; Mike OP is reporting the average s/n of the channel .. The purpose of the various speed/time versions are purely the minimum signal decode level The longer the time slot the lower the s/n capability; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-01/msg00565.html (11,661 bytes)
5. LF: Opera speeds (score: 1): Author: "Mike Dennison" <[email protected]>; Date: Thu, 19 Jan 2012 16:17:49 +0100; I have been testing the difference between Op8 (8-second message) and Op32 (32 second message). Thanks to the software, receiving stations can report on both modes without having to switch. Reports o; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-01/msg00919.html (9,565 bytes)
6. Re: LF: Opera speeds (score: 1): Author: Andy Talbot <[email protected]>; Date: Thu, 19 Jan 2012 15:23:05 +0000; Not true - the way its reported. S/N is always (in amateur circles) referred to 2.5kHz. So although OP32 has 6dB lower bandwidth than OP8 (0.12Hz compared with 0.5Hz signalling) by teh time it is nor; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-01/msg01016.html (10,810 bytes)

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