[RTTY] Why QR for the section????

Kok Chen chen at mac.com
Mon Sep 29 00:50:50 EDT 2008


On Sep 28, 2008, at 9:03 PM, Bill, W6WRT wrote:

> Often in radio
> communication the 'figs' or 'ltrs' shift is lost due to QRM or fading
> and the other, incorrect character prints.

I'm not sure that (dropped FIGS) is what happened since it happened  
for the same station (EE3R) each time, and David kept getting QR when  
he asked for a repeat.  Remember that David had mentioned

> "So I ask.  They just kept sending me their exchange. I didn't know  
> what to do."


That is why I asked if the QR came right after a 599 and a SPACE.

The USOS/non-USOS mismatch is consistent with what happened, I believe.

It is because of this that I had added a "strong USOS" to cocoaModem  
that makes the transmission compliant with both USOS receivers and non- 
USOS receivers.  The program can send a <SPACE><LTRS> pair for every  
SPACE character in the buffer.   There is the expense of an extra  
LTRS, but it reduces requests for repeats.   Pick your poison --  
faster or more accurate :-).

73
Chen, W7AY



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