The Rino transmits a position each time you transmit. If your unit is set up
to accept polls, you can poll your buddys unit without input from the other
unit. Polling is limited to one data position each 30 seconds. More data than
just the other units position comes with each data burst

Each unit will track up to 50 other units.

It is really quite sophisticated for $150.

I am interested in tracking (on the ground) several gliders racing around a lap
racing course.

Bill Snead
Georgetown Texas