Hi resmanm. I regret a lot that you were not able to get the data flow correctly after changing the resistor. I hope that unmannedtech and others, with more electronic knowledge than me, can figure out a solution. However, as a matter of fact, you can get a lot more with this setup, like GPS update position and IMU data, but with a small trick. If you connect directly with the radio you will get only the parameters you told. Try to do as follow: Get the quad and the RC radio connected and binded. The telemetry radio must already be connected to the computer and also online with the “Air” part. If you have GPS fix it’s even better. Connect the USB cable to the computer. You must have, in mission planner, both the quad and the telemetry radio available in the “port” list. Connect to mission planner via USB. The mavlink connection goes as expected. You should be able to see the telemetry flow correctly and upload missions and parameters. After, just disconnect the USB cable, go to the port list, get the telemetry radio port and hit Ctrl + T. You will see that the telemetry (including GPS data and IMU data) continues to update perfectly. You can not upload anything but, at least you will know everything that the drone is doing, unless you loose radio signal. It’s not the most appropriate way of doing this but I’m satisfied. Of course, it will be better if we can get full duplex communication.