What the heck is a mudball/
John VE1ZJ

Larry Kayser wrote:

Greetings All:

> > 3. If Alberto could adapt ARGO and let the 'time markers' also appear on
> > exact multiples of 30 seconds (or 1 minute etc..) and eventually replace
> > the 'time ticks' at the bottom by thin vertical lines (over the entire
> > window) then the RX would also have the required 'time synchronisation'
:
> > 'key up' or 'key down' of the TX would be at the same time when a 'time
> > marker' appears on the ARGO screen.

Well if your going this far why not ad real time as an optional alternative?
Connect the INVERTED 1 PPS output from a GPS receiver to the RI line in
RS232 and use the RI interrupt to make the timing coherent to a rather
excellent and free standard available everywhere on this mudball.

RI (Ring Indicate) is available on dB-25 Pin 22, and DB-9 Pin 9.

Larry
VA3LK