Hi Guys,
Has anybody used the Spektrum telemetry system with the Airspeed Sensor.
I just installed the Spektrum TM1000 module and the Airspeed unit downlinked to an iPad on my Kingcat.
The KC is powered by a AMT Pegasus - Strangely for a 30lb airplane with 37lbs thrust(more than 1:1 power to weight ratio) the speed we could record were not over 167 mph/Kmph (Not sure what the default units for speed are on the STi App)
Similar measurements with a handheld GPS unit in the airplane have yielded upto 436 km/h
This was the speed recorded with the Peggy at WOT coming out of a dive
Visually the KC appeared to be well over 200++mph .
I tried the same thing with 2 different pitot tubes - one is the pitot that comes with the airspeed sensor and the other pitot from a Jetcat unit.
Both recorded similar figures.
I checked the connections again i.e the Airspeed sensor has 2 ports one for the Static pressure and one for the Dynamic pressure marked  -ve and +ve on the sensor.
Any idea if the unit has to be calibrated ?
Also the STi App for the iPhone /iPad was not relaying RF link data i.e Fades , Frame losses & Holds
Anybody have a clue ?
I think the FPV guys should be able to help.

This is the other Pitot tube