Re: LF: More EbNaut 137.777

[Markus Vester <markusvester@aol.com>]

Hi Joe,

 

moderate during the night, but strong in the morning:

 

2015 Nov 29/30

start Eb/N0 
 UT     dB  

 

2000    nil
2030    nil
2100    3.6

2130    nil
2200    nil
2230    nil
2300    nil
2330    0.2

0000    nil
0030    0.3

0100    2.5
0130    0.3
0200   -1.2 *
0230    4.4
0300    nil 
0330    1.2 *
0400    7.3
0430    nil
0500    2.7
0530    3.2
0600   10.0
0630   10.6 
0700    5.4
0730    nil

* In two cases the VO1NA message was decoded, but superseded by a false decodes with fewer bit errors. Best center frequency seemed to vary 0.2 ... 0.4 mHz below nominal. The pieces of carrier between the messages were very helpful and correlated well with successful decoding.

 

How about trying longer messages and faster symbols (e.g. 20 char, 0.5 s) , rather than low power?

 

Best 73,

Markus

-----Ursprüngliche Mitteilung----- 
Von: Paul Nicholson <vlf0403@abelian.org>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Mo, 30 Nov 2015 1:24 pm
Betreff: Re: LF: More EbNaut 137.777

VO1NA 2015-11-29/30 8K19A 2S 5C 

 

  20:00  6.2 dB 

  20:30  7.0 dB 

  21:00  3.2 dB 

  21:30  1.4 dB 

  22:00  5.4 dB 

  22:30  no decode 

  23:00  8.7 dB 

  23:30  6.8 dB 

  00:00  no decode 

  00:30  5.4 dB 

  01:00  4.9 dB 

  01:30  no decode 

  02:00  no decode   (Andy 1.5 dB) 

  02:30  no decode 

  03:00  1.5 dB 

  03:30  1.1 dB 

  04:00  no decode 

  04:30  no decode 

  05:00  no decode 

  05:30  no decode 

  06:00  -0.3 dB 

  06:30  1.4 dB      (Andy 1.4 dB) 

  07:00  3.3 dB 

  07:30  2.8 dB 

  08:00  no decode 

  08:30  1.2 dB 

  09:00 -1.6 dB 

  09:30  no further decodes 

...