From: "Mike Dennison" <mike.dennison@rsgb.org.uk>
To: rsgb_lf_group@blacksheep.org
Date: Mon, 15 Nov 1999 12:57:13 -0000
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Subject: Re: LF: new visual-CW techniques
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Rik, ON7YD wrote:

> Thanks to all who responded to my previous mail, it seems that others had
> similar ideas to increase the transmission speed for visual-CW.
> 
> For those who also appreciate the 'therapeutic' value of visual-CW and are
> not interested in speeding up things there is the possibility to increase
> the 'dot-length' by a certain factor (+/- 3). This will ensure that the
> duration of the QSO will not be too short and has the advantage that you
> can make the QSO with less power or cover a bigger distance with the same
> power.

Yes, that's a good point. The length of the dot is the limitting factor in 
signal to noise calculations. I often can copy dashes much more 
easily than dots, partly because the averaging can be done over a 
longer period, and partly because dashes are less easily destroyed 
by impulse noise such as QRN (and there's lots of that at LF).

Mike, G3XDV (IO91VT)
http://www.dennison.demon.co.uk/activity.htm