Hello Mike,
In theory there is no need for these 'gaps', but a series of tests (mainly
conducted by DF8ZR, DF6NM and me) showed that these small 'gaps' had 2
advantages :
1. It eases the reading of characters with a series of dots or dashes (eg.
O, S, J, 5 etc...)
2. It gives the TX a 'break' (reduces the 'on/off' ratio) during long
characters
The disadvantage is that is slows down the speed by 33% (but still leaves
an average speed increase of about 225% compared to QRSS).
In my opinion these 'gaps' should not be obligatory, so you can leave them
out if you wish so.
73, Rik ON7YD
At 18:25 9/05/00 +0100, G3XDV wrote:
Rik,
Have I misunderstood, or are you saying there is a gap between
each dot and each dash? I thought there was no need to do this as
the frequency determines whether an element is a dot or dash so a
dot three times the dot lenght must be three consecutive dots.
Probably me being dumb.
Mike, G3XDV (IO91VT)
http://www.dennison.demon.co.uk/activity.htm
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