abfbrinlee,

Hey, All caps is considered yelling, that and it's awfully hard to read. That said, technically it's pretty simple to do. There are low mass pressure sensors on the market add a pitoc tube and an A/D convertor, feed the information into a postage stamp CPU and transmit it.

The main problem as I see it is that is the last item - transmit it. Getting the transmitter FCC certified, is a major - costly problem. Then there is the problem of running out of channels - if you use the 27Mhz or 900 Mhz license free bands. You would have the same situation as someone at the field using your channel. Only for this application there are no channels. Mass chaos.

Perhaps a bright LED mounted on the airplane as a stall indicator that you could see from the ground?

Later,
John