Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+137\.500\s+kHz\s+ROS\s+MF\-1\s+beacon\s*$/>

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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+137\.500\s+kHz\s+ROS\s+MF\-1\s+beacon\s*$/: 15 ]

Total 15 documents matching your query.

1. RE: LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: "g3zjo" <[email protected]>; Date: Fri, 2 Jul 2010 08:43:32 +0100; Hi Andy calculation in WSJT / WSPR gives an artificially high S/N value if the input bandwidth is restricted below >a complete 2.5kHz's worth, and if impulsive noise is present. So could ROS be suffe; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00117.html (14,252 bytes)
2. Re: LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: Andy Talbot <[email protected]>; Date: Fri, 2 Jul 2010 08:01:55 +0100; A thought. MF1 ROS is one symbol per second isn't it. If you can decode at -33dB (presumably in the reference bandwidth of 2.5kHz) that's -1dB S/N in a symbol bandwidth. Which I'm not sure I can; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00144.html (14,971 bytes)
3. LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: Gary - G4WGT <[email protected]>; Date: Sat, 3 Jul 2010 20:27:24 +0100; Hi LF, Running ROS MF-1 beacon again tonight with a little more power to the antenna producing 150mW ERP approx. Last night was 100mW ERP approx. Frequency is 137.500 kHz (dial 136.500 kHz USB) Repor; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00187.html (10,695 bytes)
4. LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: Gary - G4WGT <[email protected]>; Date: Fri, 2 Jul 2010 20:03:44 +0100; Hi LF, Running ROS MF-1 beacon again tonight with a little more power to the antenna producing 100mW ERP approx. First few frames will be at 50mW ERP then increase to the above level. Frequency is 13; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00227.html (11,283 bytes)
5. LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: Gary - G4WGT <[email protected]>; Date: Thu, 1 Jul 2010 18:35:31 +0100; Hi LF, My ROS MF-1 beacon is transmitting now with 3 minute timer. Frequency is 137.500 kHz (dial 136.500 kHz USB), reports & QSO attempts very welcome. ERP about 50mW. 73 Gary - G4WGT - IO83QO; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00240.html (10,256 bytes)
6. Re: LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: "Graham" <[email protected]>; Date: Thu, 1 Jul 2010 23:47:31 +0100; Gary, Just a couple of db's short of a decode via the web , -36 is going some though http://websdr.ewi.utwente.nl:8901/ RX1: 21:55 @ 13.8 Hz: *[:]V-KFY:32DM5#("")EM3H#/F[_ <CANCEL> -36 dB G .. From:; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00248.html (12,572 bytes)
7. Re: LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: "Graham" <[email protected]>; Date: Thu, 1 Jul 2010 20:06:12 +0100; RX1: 19:02 @ -8.0 Hz: G4WGT IO83QO, [email protected] <STOP> -19 dB 33 Km @ 056º From: [email protected] Gary - G4WGT Sent: Thursday, July 01, 2010 6:35 PM To: LF Group (RSGB) Subject: LF: 137.5; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00260.html (11,674 bytes)
8. Re: LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: "Graham" <[email protected]>; Date: Thu, 1 Jul 2010 19:49:13 +0100; That would trigger the email report .. qra , would add the range as well ! Q What antenna system do you use on 137 ? G .. Hi Gary, RX1: 17:27 @ -3.8 Hz: G4WGT <STOP> -33 dB RX1: 17:32 @ -3.3 Hz: G4WG; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00303.html (11,937 bytes)
9. Re: LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: "Graham" <[email protected]>; Date: Fri, 2 Jul 2010 19:55:46 +0100; Tnx Eddie, I was setting up to see if i could monitor Willem. could see him via twente but he was running mf-7 , which is not as sensitive as mf-1 , that was a test at 100 watts , decoded that via tw; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00344.html (24,612 bytes)
10. RE: LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: "g3zjo" <[email protected]>; Date: Fri, 2 Jul 2010 15:39:55 +0100; I am monitoring 502kHz ROS MF1 Eddie G3ZJO --Original Message-- From: [email protected] [mailto:[email protected]] On Behalf Of Graham Sent: 02 July 2010 13:33 To: r; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00345.html (23,715 bytes)
11. Re: LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: "Graham" <[email protected]>; Date: Fri, 2 Jul 2010 13:33:28 +0100; Reply from R . MF1 ROS is 0.837053 symbols/second. If you can decode at -33dB (presumably in the reference bandwidth of 2.5kHz) that's +1.7 dB S/N in a symbol bandwidth, that in the case of 16FSK wit; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00394.html (15,638 bytes)
12. Re: LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: Gary - G4WGT <[email protected]>; Date: Thu, 1 Jul 2010 19:54:30 +0100; Hi Michel, Thank you for your report. I will send a longer message with e-mail for a little while. 73 Gary - G4WGT On 1 July 2010 19:00, Michel F5WK <[email protected]> wrote: Hi Gary, RX1: 17:27 @ -; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00448.html (12,488 bytes)
13. RE: LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: Rik Strobbe <[email protected]>; Date: Fri, 2 Jul 2010 09:34:45 +0200; Andy, I guess it is the same SNR issue that has been noticed with WSPR. As you mentioned SNR is calculated for SSB bandwidth. If some uses a narrow filter the calculated SNR is too low. If I remember; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00468.html (16,122 bytes)
14. Re: LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: Gary - G4WGT <[email protected]>; Date: Sat, 3 Jul 2010 21:52:29 +0100; Last night was 100mW ERP approx. Frequency is 137.500 kHz (dial 136.500 kHz USB) Reports & QSO attempts will be welcome. 73 Gary - G4WGT - IO83QO; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00476.html (11,601 bytes)
15. Re: LF: 137.500 kHz ROS MF-1 beacon (score: 1): Author: Michel F5WK <[email protected]>; Date: Thu, 1 Jul 2010 20:00:11 +0200; Hi Gary, RX1: 17:27 @ -3.8 Hz: G4WGT <STOP> -33 dB RX1: 17:32 @ -3.3 Hz: G4WGT <STOP> -34 dB RX1: 17:36 @ -3.3 Hz: G4WGT <STOP> -30 dB RX1: 17:41 @ -3.3 Hz: G4WGT <STOP> -31 dB RX1: 17:45 @ -3.3 Hz:; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00505.html (10,050 bytes)

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