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Date: Mon, 09 May 2011 22:26:03 +0200
From: wolf_dl4yhf <dl4yhf@freenet.de>
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Subject: Re: LF: test message
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Hi Eddie,

You wrote:
> Did you ever put numbers to the data units?
>
> 080905.jpg is familiar to us as a breakfast or tea time 3 unit code, 
> reading 6,11,12
>
> 0080906jpg is more complex 3,8,6 - 6,8 ---- 9,11,10 - 12,4
>
> This has confirmed some as yet unused (unseen by me) data units which 
> I had surmised were there and useable.

I didn't try to 'see' anything there, I am not even sure how many 
different 'tones' they actually send. But it doesn't seem that much, 
only a few bits per symbol.

The filenames use the date in ISO 8601 format, which I often use for 
temporary filenames.. YYMMDD . With a full year number, the dates were 
2008-09-05 and 2008-09-06. Not sure if the timescale was in UTC or local 
time back then (but compare this with Markus' post, the schedule seems 
to be the same still). I don't remember what happened on September 6, 
2008, why they sent so many 'data bits' around and after noon. It's a 
pity my recording ends before the transmitter switched back to the 82 Hz 
idle tone on that day.

73,
   Wolf .