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[RTTY] More on the KH6ZM mystery

To: RTTY Reflector <RTTY@contesting.com>
Subject: [RTTY] More on the KH6ZM mystery
From: Kok Chen <chen@mac.com>
Date: Tue, 11 Jan 2011 19:22:04 -0800
List-post: <rtty@contesting.com">mailto:rtty@contesting.com>
OK, I took the sound file that Alex K2BB graciously emailed to me and ran it 
through my modem and I got this

> DRAOO 1166 1K?? K2BB
> K2BB 599 1166 173 DE K2BB TU NJ NJ BK2BB  U DE KH6ZN

Not the KH6M that people seem to print, but KH6ZN.

On a hunch that he was cutting off his transmitter too early and chopping off 
the very last bit just before the stop bit (the difference between a Baudot N 
and a Baudot M), I increased the receive baud rate and sure enough, I printed 
KH6ZM at 48 baud -- indicating that at least part of that last bit of M was 
perhaps transmitted.

He could loose many points because of this.  Pity.  For a different reason, I 
always add a space at the end of my exchanges (yeah, I can hear the millisecond 
counters grumbling in the background) which could have sidestepped early cutoff 
problems too.  But again, this could be something very different.

I received #272 from my first QSO with KH6ZM and another for #719, both well 
before Alex' 1166, so I should have noticed a discrepancy too (I look out for 
those things, contests don't interest me, RTTY signal do :-), but I didn't see 
any problem from the left coast here.  I printed ZM when I worked him and each 
time that I clicked on his signal.  Odd, eh?

73
Chen, W7AY

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