Using cheap Orange LRS TX for LR telemetry

frejus

Hello guys,

Obviously not as far and sexy as GPRS from Synamics or 4G from Silvio, but it seems to be an interesting play. Basically use 2 times 1W cheap Orange TX to transfer APM mavlink telemetry above 10 km with the correct antennas
http://www.itluxembourg.lu/site/

Cheers

Phil

Sinamics

This is absolutt a good alternative to 3g/4g telemetry, what do you get for 27EUR now days.. 😉
Thx for sharing this with us.

Chuckster1

Hi.

I have 2 orange rx open LRS tx and flashed them with custom firmware. I have the jumper on my APM to activate serial PPM. Telemetry data is coming back fine. I have a regular Futaba rx (PWM) going to a PWM to PPM encoder. The PPM signal then goes to my APM. My apm is armed, and the servos go in a locked positon and stay. I did a radio calibration, and can clearly see my Futaba radio inputs on my Mission Planner screen move perfectly with my RC input movements on my radio. MP lets me switch from manual to RTL or any mode I want. The servos stay locked in place, despite changing to manual mode. The IT Luxembourg site shows the PPM signal from the Orange RX module, not a receiver. Could this be my problem, or is there any way to make this work, or a reason why my setup is not working?

flipflap

Hi, normally the ULRS will transmit your RC (PPM) signal as well as the telemetry : you don't need to use a RC receiver or a PWM to PPM converter.

Just plug the ULRS TX module in the transmitter (so it receives the VCC, GND and PPM), and on the RX side connect the telemetry (RX/TX), GND, and PPM. Then put a jumper between CH 2 & 3 of the APM for serial PPM, and voilà.

Works very well