CW is King!Posted by Peter Sunday, January 17 2010 18:38:24
Yes, it was about time.
Time to revise the "EME Communications" chapter in our ham bible, the ARRL Handbook, it's been long overdue.
But the way it has been done certainly makes me and a lot of friends dissappointed.
The new text is totally in favour of digital EME (WSJT/JT65) and the author claims that digital is at least 10dB better than CW.
In essence, the bottom line is that newcomers should not try anything but digital EME in the form of JT65 and they should start by looking up Internet real time chatboards to get guidance during their first endeavours in EME.
The Internet chatboards are even listed in the text so that digital moonbouncers don't get lost and try random EME, for Heavens sake beware or random..!
Really, this distorted way of inviting people to EME troubles me.
Who was chosen to rewrite the chapter?
- Of course, the editors of the ARRL Handbook asked Joe Taylor K1JT do to it.
Am I surprised? Not really. This is marketing of digital EME in the form of JT65, nothing less. After all, he invented the software, so why wouldn't he say that EME shouldn't be done without it..?
Now, the thing that really upsets me is the fact that K1JT refrain from telling the reader the truth about the extra 10dB his digital software is said to provide over CW.
The full chapter consists of thousands of words, but not once does he mention the Deep Search feature of his software! Not once. This part of the truth is totally left out of the context.
As we all know it:
- The truth is that Deep Search never communicates full callsigns.
- The truth is that Deep Search is incapable of communicating full callsigns.
- The truth is that the Deep Search routine is not a QSO!
Furthermore, the truth is that a said 10dB difference lies in the fact that JT65 Deep Search never does what a CW operator does, i e copies the full message as it is transmitted!
Deep Search is cheating the operator into believing that the computer has received the full message from the station at the other end.
This is NEVER mentioned in the ARRL Handbook chapter - EME Communications!
It is hard to understand why the editor of the ARRL Handbook is unwilling to disclose the secret of this communication protocol to it's readers.
It is however easy to understand why the author Joe Taylor K1JT is unwilling to reveal the truth. To do so it is necessary to reveal that the Deep Search feature is incapable of making a QSO on the air! Deep Search can not communicate callsigns. It is a guessing excercise that relies on having all the information avaliable to the CPU in the computer. As the chapter is so full of scientific data, why not add this little bit to the text also??
Joe Taylor K1JT is again doing what he is best at - full fledged unreserved marketing of his cheating software - by omitting the truth when comparing it to the king of modes - CW!
We CW operators have no need to hide the truth, we know what CW stands for and what it is capable of - real QSO's in real time - no need to know the information before we decode it!
CW is King!
Oh, by the way, here is a link to The ARRL Handbook Chapter EME Communications
73 de Peter SM2CEW
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