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Re: LF: LF EbNaut transmission anouncement

from [DK7FC] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: LF EbNaut transmission anouncement
From: DK7FC <[email protected]>
Date: Tue, 18 Sep 2018 09:34:28 +0200
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Luis,

I further analysed the files from your transmission. The best SNR i'm getting (assuming the message is 'DOM') is 9.07 dB from the 2 UTC transmission. We need about 4 dB more S/N, i.e. a lower noise or 0.3 W TX power :-) With 1 W it should be possible to decode your complete callsign! The SNR peaked at a time offset of -0.5 seconds and a frequency offset of -30 uHz, but that does not tell to much at this low SNR, maybe.

Worth to try again!

73, Stefan

Am 13.09.2018 21:43, schrieb VIGILANT Luis Fernández:
Hi EbNaut

I will be transmiting an EbNaut message in LF with about 100mW to antenna (not ERP)
during the next 24 h al least

Frequency: 137.485Hz

Transmissions already started at 19:30 UTC and will repeat twice every hour at minute 00 and 30

Coding: 16K21A
CRC: 16
Symbol: 2
Characters: 3

Number of bits:864
Duration: 00:28:48

Reports wellcome. Let's se what can be donde with really low power

73 de Luis
EA5DOM

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