In WPX, the only cut numbers I used were leading T's. However, there
were times that I felt like not using cut numbers was excessive /
discourteous to the other station -- the "when in Rome..." phenomenon,
Personally, I didn't have a problem with leading A's and T's, or
trailing T's and N's when the signals were strong. A couple of
stations used cut numbers "in the middle", which I found a little
When responding to a repeat, or when sending number 599, 1599, 2599,
etc., I think using the full number would be better.
Michael D. Adams (AB1OD)
Poquonock, Connecticut | email@example.com
On Thu, May 31, 2012 at 8:23 AM, Pete Smith N4ZR <firstname.lastname@example.org> wrote:
> There's nothing like a CW serial number contest to get you re-thinking
> about the use of cut numbers.
> For situations where first-time intelligibility is important, I think
> use of cut numbers probably costs more time than it saves. Here's why:
> The basic Morse Code 0-9 character set has two important characteristics
> - each number is five code elements long, and each one gives you two
> chances to copy correctly or confirm that you have done so. If you hear
> the first dit of 1, or the last 4 dahs, then you know what the number
> is. This is because, with the regularity of computer-sent CW and the
> presence of "5NN" as a signal to expect the number to begin at a certain
> time, you can often infer from the length of the "lost" portion of a
> number what it must have been. Even if you only get the two dits of 8,
> depending on when you hear them, you can have pretty good confidence
> that it was, in fact, 8, and not seven with one unheard dit.
> How much time is saved by sending A instead of 1? How much time is lost
> by responding to "AGN" or "NR?"
> Opinions? I bet there are a few out there.
> 73, Pete N4ZR
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