Dick Dievendorff wrote:
> .......<clip>
3) To send good smooth morse code, you probably need to mess with the PC
> clock. I'm not an expert in the techniques, but I think it is difficult to
> provide smooth speed changes (from 22 to 23 to 24 WPM) and "accurate" morse
> code with a clock as coarse-grained as the standard-rate PC time-of-day
> clock. So I suspect CT and its peers run the clock at a higher speeds.
> Most multitasking OSs won't let you mess with the hardware unless you
> install a device driver, and talking Joe Ham through the details of device
> driver
> installation isn't something I'd like to spend much time doing minutes
> before a contest.
So how hard would it be to incorporate a morse driver on a card? You
could send the text to the card in a burst and the card would control
the speed (after being given suitable setup and control commands from
the PC). This would divorce the morse from the PC clock and avoid all
the interrupt and timing problems.
Since there appears to be a market for voice cards out there, why not
incorporate the morse feature in the same card as an option? Is the CW
market not large enough?
--
Submissions: ct-user@contesting.com
Administrative requests: ct-user-REQUEST@contesting.com
WWW: http://www.contesting.com/ct/
Questions: owner-ct-user@contesting.com
|