Message-ID: <5A44CB9D.8080707@posteo.de>
Date: Thu, 28 Dec 2017 11:46:53 +0100
From: DK7FC <selberdenken@posteo.de>
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To: rsgb_lf_group@blacksheep.org
References: <2dbcd2a8-0109-41e4-c0ca-aada17f54de8@abelian.org> <5A2D886D.5060109@posteo.de> <5A31249C.2040307@posteo.de> <5A326AAE.7020808@posteo.de> <6b23a798-f28e-828c-bd8a-43ba8af0fb6a@abelian.org> <346e5dfe-da5f-79e9-c097-e3012a3b74bd@abelian.org> <5A344E83.3020308@posteo.de> <5A37BB18.4090806@posteo.de> <79b53aa1-0fa7-d02c-34bf-5b2e3b7bdddb@abelian.org> <5A381F2B.7000304@posteo.de> <3871624a-11dc-12b8-853c-8454840ca9ff@abelian.org> <5A398786.7000001@posteo.de> <5A398906.9000806@posteo.de> <6833b8ea-5cf8-809e-364e-a9f47e04bc44@abelian.org> <5A3D1058.2060801@posteo.de> <17640699-682a-2d4e-6c5f-8fa14d411530@abelian.org> <5A3DA439.2070503@posteo.de>
In-Reply-To: <5A3DA439.2070503@posteo.de>
Subject: Re: VLF: Finally back on the 58 km band...
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5 transmissions are completed now. I expect this is enough to leave a 
clear decode at RN3AUS.
Alex' txt files will be invaluable this time :-) They may contain the 
messages of VO1NA, W4DEX as well as my litte contribution on 5170 Hz 
over the negligible distance of 1985 km :-)

Without having the confirmation of a successful message decode i'm 
announcing and starting the next message this evening. This will take a 
while to decode near Moscow. It can be a challenge of the other VLF 
receivers in the region:

*f = 5170.1000 Hz
Start time: 28.Dec.2017  15:30:00 UTC (daily)
Symbol period: 30 s
Characters: 12
CRC bits: 6
Coding 16K21A
Duration: 13:04 [hh:mm]
Antenna current: 300 mA

*73, Stefan


Am 23.12.2017 01:32, schrieb DK7FC:
> VLF,
>
> It feels good to be back on the well audible frequencies. Finally i'm 
> running a carrier on 5170.005 Hz again, since 21:30 UTC. The target 
> antenna current is 300 mA, the actual level is arround 260 mA at present.
> The carrier will run until my next EbNaut message will start tomorrow!
> In October Alex and me managed to pass 1 character on 5170 Hz over the 
> almost 2000 km land path, a record distance on that band. Now the next 
> challenge is to try 3 characters. Since the nights are long, we can 
> use very long transmission times. However i think the FFT window 
> length at RN3AUS is currently just 13.27 hours so i try:
>
> *f = 5170.1000 Hz
> Start time: 23.Dec.2017  15:30:00 UTC (daily)
> Symbol period: 60 s
> Characters: 3
> CRC bits: 11
> Coding 16K21A
> Duration: 13:04 [hh:mm]
> Antenna current: 300 mA*
>
>
> 73, Stefan

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5 transmissions are completed now. I expect this is enough to leave a
clear decode at RN3AUS.<br>
Alex' txt files will be invaluable this time :-) They may contain the
messages of VO1NA, W4DEX as well as my litte contribution on 5170 Hz
over the negligible distance of 1985 km :-)<br>
<br>
Without having the confirmation of a successful message decode i'm
announcing and starting the next message this evening. This will take a
while to decode near Moscow. It can be a challenge of the other VLF
receivers in the region:<br>
<br>
<b>f = 5170.1000 Hz<br>
Start time: 28.Dec.2017  15:30:00 UTC (daily)<br>
Symbol period: 30 s<br>
Characters: 12<br>
CRC bits: 6<br>
Coding 16K21A<br>
Duration: 13:04 [hh:mm]<br>
Antenna current: 300 mA<br>
<br>
</b>73, Stefan<br>
<br>
<br>
Am 23.12.2017 01:32, schrieb DK7FC:
<blockquote cite="mid:5A3DA439.2070503@posteo.de" type="cite">
  <meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
VLF,<br>
  <br>
It feels good to be back on the well audible frequencies. Finally i'm
running a carrier on 5170.005 Hz again, since 21:30 UTC. The target
antenna current is 300 mA, the actual level is arround 260 mA at
present. <br>
The carrier will run until my next EbNaut message will start tomorrow!<br>
In October Alex and me managed to pass 1 character on 5170 Hz over the
almost 2000 km land path, a record distance on that band. Now the next
challenge is to try 3 characters. Since the nights are long, we can use
very long transmission times. However i think the FFT window length at
RN3AUS is currently just 13.27 hours so i try:<br>
  <br>
  <b>f = 5170.1000 Hz<br>
Start time: 23.Dec.2017  15:30:00 UTC (daily)<br>
Symbol period: 60 s<br>
Characters: 3<br>
CRC bits: 11<br>
Coding 16K21A<br>
Duration: 13:04 [hh:mm]<br>
Antenna current: 300 mA</b><br>
  <br>
  <br>
73, Stefan<br>
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