Re: LF: RE: LF EbNaut from IW4DXW

[Domenico IZ7SLZ <iz7slz.domenico@gmail.com>]

EbNaut test transmissions from IW4DXW continue. Yesterday Riccardo sent some special messages on MF (and in Italian).

The frequency declared by Rick is 475399.999999572 Hz (resulting from a certain ratio programmed on his DDS).

Best results here have been found with a small frequency offset.

2018-11-01_19:00:00 475399.99999572Hz N=30 T=0.1s 8K19A CRC=16 list=100 sym=1712 Duration=171.2s
T_OFFSET=0.000s F_OFFSET=-0.0005Hz
found rank 0 ber 1.0864e-01 Eb/N0 8.9 M -1.024808693e+01 ph 1 180,180,180,180 [BUON FINE OGNISSANTI DE IW4DXW]
--------------------------------------------------------------------------------------------
2018-11-01_17:55:00 475399.99999572Hz N=68 T=0.2s 8K19A CRC=24 list=100 sym=3600 Duration=720.0s
T_OFFSET=0.000s F_OFFSET=-0.0005Hz
found rank 0 ber 1.9944e-01 Eb/N0 5.3 M -1.139669323e+01 ph 0 0,0,0,0 [GE CARO DOMENICO, TU PER IL PIACEVOLE
 POMERIGGIO DI RADIO. 73 DE DXW]
--------------------------------------------------------------------------------------------

Recalling similar results in last season's activities, it is confirmed that the Medium Frequencies seem to be good for EbNaut if we use transmission with a small duration hoping for small events of fading.

73, Domenico IZ7SLZ

NNNN

On Wed, 31 Oct 2018 at 13:48, VIGILANT Luis Fernández <luis@vigilant.es> wrote:

Hi Domenico, EbNaut

 

Congratulations to you and Riccardo. Really a long  message J

 

And saw you could decode my 30 character transmission at 0.5s per symbol

 

2018-10-26_22:30:00 137490.000Hz N=30 T=0.5s 8K19A CRC=16 list=1000 sym=1712 Duration=856.0s

found rank 0 ber 2.2897e-01 Eb/N0 4.5 M -1.009896278e+01 ph 1 180,180,180,180 [EA5DOM 30 CH TEST @ IZ7SLZ 73*]

 

Very nice. That took less than 15s transmission

 

73 de Luis

EA5DOM

 

De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de Domenico IZ7SLZ
Enviado el: miércoles, 31 de octubre de 2018 12:26
Para: rsgb_lf_group@blacksheep.org
Asunto: LF: LF EbNaut from IW4DXW

 

Hi LF,

Riccardo IW4DXW did some special EbNaut transmissions

 

30-10-2018 22:10UT 100Char 0.1s 8K19A CRC16 137490.000Hz

 

30-10-2018 22:30UT 100Char 0.1s 8K19A  CRC16 137490.000Hz

 

30-10-2018 22:50UT 100Char 0.05s 8K19A  CRC16 137490.000Hz

 

30-10-2018 23:00UT 100Char 0.05s 8K19A  CRC16 137490.000Hz

 

The first two (T=0.1s/sym) have been decoded here.

 

Since two days i'm testing a /P location outside the city (locator is JN80ot) and receiving conditions are much better than in the shack.

Unfortunatly there isn't any internet connection (so far) so i have to upload various report manually on my website qsl.net/iz7slz and on wsprnet.org.

Hope to chatch some signal from US with EbNaut or (much difficult) with WSPR: linux autodecoder works for both wspr-2 and wspr-15. Maybe some operator wants to use wspr15 ?

 

73, Domenico IZ7SLZ

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