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Date: Tue, 27 Jan 2009 19:48:57 +0100
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References: <004f01c9809a$708b5c30$0301a8c0@mal769a60aa920>, <497F3902.1070604@sighthound.demon.co.uk> <497F5976.5945.1B872C2@v.d.heide.on-line.de>
In-Reply-To: <497F5976.5945.1B872C2@v.d.heide.on-line.de>
Subject: Re: LF: PROPAGATION WSPR
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Klaus von der Heide wrote:

>Dear LF Group,
>.......
>
>Nevertheless, WSPR is not very near to the Shannon limit. 
>I spent nearly all my leisure time of the last year with 
>the design of a new digital ham radio QSO-mode HD43 that 
>comes as close as possible to the theoretical limit. 
>I will send a preprint on request.
>
>73 de Klaus, DJ5HG 
> 
>
>  
>
Dear Klaus,
then i would appreciate receiving your paper  upon this hd43 mode.
In fact  some of my free time (not much of it, unfortunately) is used 
to  'play'  with
some variations of digi modes - as a part of my scientific job(quantum 
chemistry)
i do fortran programming so i took  old  jt44  mode of wsjt  i.e.  its 
fortran source and
using it as a starting basis i do some 'modifications'  for my own fun ...
btw, does  the "43" abbreviation  stand for the PUA43 system  of W7PUA
 which was  used in FSK441 protocol?
                                                                                      

                                                                           
73, peter, sq7mpj
qth: lodz, poland /jo91rs/