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RE: LF: EbNaut LF message announcement

To: "[email protected]" <[email protected]>
Subject: RE: LF: EbNaut LF message announcement
From: VIGILANT Luis Fernández <[email protected]>
Date: Thu, 13 Dec 2018 15:39:12 +0000
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Thread-topic: LF: EbNaut LF message announcement

Hi Stefan

 

Your second transmission at 00:30 UTC was still stronger

 

Signal decreasing after that and last transmission at 06:30 was just 4.5dB Eb/N0

 

 

It is very nice to see the 8 transmission in the slow spectrogram

 

 

 

 

De: [email protected] [mailto:[email protected]] En nombre de DK7FC
Enviado el: jueves, 13 de diciembre de 2018 15:58
Para: [email protected]
Asunto: Re: LF: EbNaut LF message announcement

 

Thanks Luis.

A nice SNR! You will manage the 50 characters as well i bet. Even 200 chars would be no problem.
But for me, using SpecLab to key EbNaut, it is not possible to use shorter symbol length than 1 second. Also i remember i have a PTT watchdog which interrupts the transmission after a duration of something between 30 and 60 minutes. So maybe it will clip a few minutes at the end of the coming message, we will see ;-)

73, Stefan

Am 13.12.2018 15:48, schrieb VIGILANT Luis Fernández:

Hi EbNaut

 

Fortunately same maths as yesterday ;-)

 

 

73 de Luis

EA5DOM

 

De: [email protected] [mailto:[email protected]] En nombre de DK7FC
Enviado el: jueves, 13 de diciembre de 2018 0:08
Para: [email protected]
Asunto: Re: LF: EbNaut LF message announcement

 

LF,

Another, shorter message, for the distant stations:



f = 137.540 kHz
Start time: 12.DEC.2018  23:30:00.3 UTC (8 repeats)
Symbol period: 3 s
Characters: 5
CRC bits:
16
Coding 8K19A
Antenna current: 4 A
Duration: 25:36 [mm:ss]



73, Stefan

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