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Re: VLF: 15 charaters on the 67 km band...

To: [email protected]
Subject: Re: VLF: 15 charaters on the 67 km band...
From: DK7FC <[email protected]>
Date: Tue, 12 Sep 2017 13:57:55 +0200
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]>
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I'd like to shorten that transmission experiment a bit. For a decode from Paul or Jacek it may take 2 weeks of daily transmissions. DL0AO however will likely get a decode today, if all works well. After the decode from DL0AO i'd like to stop the test because my new stacked coil is already completed, at least it allows a transmission on 8270 Hz. My larger 3 layer coil allows 700 mA antenna current, the new one allows just 300 mA, i.e. -7.4 dB. Anyway i'd like to test that new coil for the first time. I intend to run DFCW-60000 near 8270.005 Hz. This will allow to see a trace in a 47 uHz spectrogram, for Mike and Luis and DL0AO and maybe even a few more stations. Each 'dit' will take 16 hours.
I'll start in the end of the week but for the newcomers it would make sense to start a RX spectrogram a few days earlier.
An announcement of the carrier transmission will follow during the week...

73, Stefan

PS: Markus, if you can decode the message, you can tell it, it's no secret.

Am 09.09.2017 20:27, schrieb DK7FC:

Another EbNaut message which is even more challenging to decode:

f = 4470.005000 Hz
Start time: 10.September.2017  05:00:00 UTC (daily repetition)
Symbol period: 20 s
Characters: 15
CRC bits: 14
Coding 16K21A
Duration: 11h01min20sec
Antenna current: 155 mA

Markus, if you decode it (after stacking 2...3 days), pse don't tell the message here (but your decode details pse). It will be interesting to see if Paul can get it too. Paul, will you try? Or are you still testing the E field antenna?

73, Stefan
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