[Moon] Here we go again..

[Peter Sundberg]

In his quest for acceptance of the extremely limited transfer of data in a
JT65 Deep Search QSO, K1JT is endlessly suggesting that all CW operators
are cheating when working EME skeds. 

This is his latest statement, sent via email to all the representatives of
the IARU Region 1 meeting in Vienna next weekend:


"JT65 QSOs require the transfer in each direction of a minimum of 16 bits 
of information.  Thus, even when the "Deep Search" decoder is 
used, JT65 QSOs transfer about five times more information than 
the most marginal scheduled QSOs using CW."


I must say, this is nothing but an insult. 

He is saying that Deep Search transfers FIVE TIMES more info than a CW QSO,
where I COPY both calls, plus report, plus acknowledgement...??? 

NOT SO!!!

The standard, and fully accepted, EME procedure says that if I don't COPY
the information, then it is not a valid QSO! Period. 

DJ5HG has recently published a very interesting document, explaining that
if we fill the CALL3.TXT file with more calls, the DS decoder will ALWAYS
produce false decodes. Confidence is zero.

Klaus has also suggested quantative guidelines for digital QSO's, where
confidence in the decode is not an issue. It is fully possible to produce a 
software that would meet these criteria, thus matching digital QSO's with
old accepted standards for analogue.

see http://www.sm2cew.com/IARU_GeneralComment_DJ5HG.pdf

Klaus ends his document by stating, that Deep Search would not conform to
these basic guidelines because of the way it is constructed.

Joe Taylors comment about this document is;  "Nothing in the DJ5HG analysis
is incorrect."


Furthermore, Joe Taylors statement from April 2006 on Moon-Net:

"Digital communication modes are different.  Their quantities of
information transfer can be measured objectively.  The QSO guidelines
for traditional modes are an obvious and reasonable starting point, but
you and others have persuaded me that we could benefit from having more
explicit guidelines for digital QSOs -- probably something quantitative,
something capable of establishing with objectively high confidence that
the quantitative guidelines have been met.

I hope to work with DJ5HG, and perhaps others, to produce some
recommendations which address this perceived need.

Many thanks for your continuing interest!

With best wishes,
-- Joe, K1JT"


It is TIME for Joe Taylor to stand up for his words, and not continously
belittle the CW operators.

73 de Peter SM2CEW
www.sm2cew.com
http://blog.sm2cew.com