The Themi does not have any input for glider type or airspeed. It uses
GPS data and pressure altitude only for the thermal centering
calculations. Many reports suggest that it works very well.

Good Soaring,

Paul Remde
Cumulus Soaring, Inc.

Paul,
How many hours, with 4 second interval, will the Themi FR record.
Does it have a 5 volt output and cable to hook up a PDA?
Udo