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Re: VLF: Carrier on 4470.005 Hz! / EbNaut

To: [email protected]
Subject: Re: VLF: Carrier on 4470.005 Hz! / EbNaut
From: DK7FC <[email protected]>
Date: Thu, 24 Aug 2017 13:14:36 +0200
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Hello Markus and the DL0AO team.

Excellent, you got it!
Also it is interesting to see that the EW earth antenna produces better results (this time) than the cardioid with its current settings.
With the coming transmissions you may try your stacking tool.

73, Stefan

Am 23.08.2017 23:34, schrieb Markus Vester:

Slightly improved decode with complete data.

73, Markus

-----Ursprüngliche Mitteilung-----
Von: Markus Vester <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Mi, 23. Aug 2017 21:55
Betreff: Re: VLF: Carrier on 4470.005 Hz!

Hi Stefan,

think we got it! The most plausible decode "PEACE" came from the DL0AO EW-antenna, whereas the W-cardioid insisted on "@ !&;". Both files ended half an hour early at 18:27, but I was too curious to wait two more hours for the next FFT output.

Best 73,
Markus (DF6NM)

-----Ursprüngliche Mitteilung-----
Von: DK7FC <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Mo, 21. Aug 2017 9:35
Betreff: Re: VLF: Carrier on 4470.005 Hz!

Hi Paul, Markus, VLF,

That's already a nice peak! Markus' 'OK message' came to late last night, so i let the TX running without starting EbNaut. That's not bad at all because now you will get more energy to produce a better peak.
I'm happy with the SNR on these two locations from my first signal between 4...5 kHz.
I'd like to start a somwwhat longer EbNaut message which will be repeated daily until there are decodes on your RX sites. For DL0AO it could work with 1...2 days stacked and for Paul we may need 2...4 days:

f = 4470.005000 Hz
Start time: 22.August.2017  04:00:00 UTC
Symbol period: 60 s
Characters: 5
CRC bits: 6
Coding 16K21A
Duration: 14h56min
Antenna current: 150 mA

(suggested optimum list length: 9)

Great, i'm excited and curious to see if you will get that message :-)

73, Stefan

Am 21.08.2017 00:58, schrieb Paul Nicholson:

> Anything on Pauls RX?

So far,

About 10.5 dB in the 12 hour integration.

Paul Nicholson

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