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Re: VLF: New experiments on 17.47 kHz planned...

To: [email protected]
Subject: Re: VLF: New experiments on 17.47 kHz planned...
From: DK7FC <[email protected]>
Date: Wed, 22 Aug 2018 17:39:26 +0200
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VLF,

Last night a carrier test transmission at 1.2 A antenna current went well for a few hours.
Today the regular carrier transmissions start from 16...0 UTC on 17470.1 Hz.

Reports welcome :-)

73, Stefan

Am 20.08.2018 16:25, schrieb DK7FC:
PS: Is there anyone else interested in VK or even ZL ?

Am 20.08.2018 16:23, schrieb DK7FC:
Hi VLF,

For this week, i'm planning to start with new experiments on 17.47 kHz, where i have a (renewed) special permission to transmit.
So far the best results were a prooved carrier detection as well as a
1 character EbNaut decode by Edgar from Tasmania (VK7).
The first goal will be to determine the best time (start time and
length) on the path for this season. We have a usable path for about
2 months centered on our autun/spring time (21st SEP).
The Signal will be exported by SpecLab to simple txt files containing
the FFT data. This allows stacking, which will be required to get
some S/N at all. A reasonable stable path is essential during the
transmission time. All this will be determined by running some
carrier transmissions, a few hours per day, starting about 16 UTC.
When knowing the time to try we will attempt to transfer a 2
character message and then even longer messages. 5 characters would
be realistic i think, with some luck and good propagation and low QRN
on the RX site...
More soon.

73, Stefan




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