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Re: LF: VLF EbNaut

To: [email protected]
Subject: Re: LF: VLF EbNaut
From: DK7FC <[email protected]>
Date: Wed, 12 Dec 2018 20:16:00 +0100
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Hello Joe,

I tried to decode your message from the stream of Renato Remoro. The carrier S/N is quite thin but there were two decodes of the same message.
Best result was:
found rank 19764 ber 4.4515e-01 Eb/N0 1.2 M -4.933010787e-04 ph 31 -120,-120,-90,-90 [3]
carrier phase: -0.8 deg
carrier Eb/N0: 1.0 dB
carrier Es/N0: -20.36 dB
carrier S/N: 8.58 dB in 42.5 uHz, -35.13 dB in 1Hz, -69.11 dB in 2.5kHz

...i.e. the message is '3'.
There is nothing to loose so i tell you that result. Maybe it is wrong. I will try again tomorrow including stacking and see if there is another result with better SNR.

73, Stefan

Am 12.12.2018 10:56, schrieb DK7FC:
Joe,

However, i'm recording the VLF stream of Renato Romero since this morning again. I will try to decode the message rom these recordings. It is a good experiment for me to see if it works. So just continue TXing.

73, Stefan

Am 12.12.2018 08:20, schrieb DK7FC:
Hello Joe,

Unfortunately my tree is shut down since a week due to lack of sun. After 3 years the lead acid batteries lost about 50 % of their capacity, so i have only 5 days coverage. A better battery system would be helpful but with these new permanent overcast winter days i would need something like 500 Ah it seems.
I will try as soon as the tree is back...

73, Stefan

Am 12.12.2018 01:54, schrieb [email protected]:
A quick reminder:

8.2700075 kHz, one character, 30 s symbols, 784 symbols, 16K23A, CRC-21, 2300 and 1100 ut daily 30 watts to a 100x15m RL

73
Joe VO1NA




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