If you are having a Radian Issue please read the following first so that we can help you resolve your issue efficiently: Aircraft Type: Gimbal Type: Radian Type ( 1, 2 , 3 axis) Gimbal Power source: Gimbal Radio Type: Radian Communication Protocol (S.Bus, PPM, PWM, Spektrum) Connections: Change these to match your setup Roll Sensor: Port 1. GR-24 receiver and power. 2. 3. To Tilt sensor 4. To Roll Servo Tilt Sensor: Port 1. 2. 3. 4. Pan Sensor: Port 1. 2. 3. 4. Symptoms: Steps taken to resolve: Video of problem (this one is critical! If you can give us a good iPhone video with audio explaining what you are looking at we can usually resolve the problem very quickly. Please tell us what is going on in the video and at what time the issue happens.) Please also do the following: a. With the gimbal powered off, connect up the USB and adapter from your PC to the Radian sensor to which you have the receiver connected. b. Power on the gimbal and sensors with the transmitter set to the Off mode for the Radian sensors. c. Use the Radian software, connect the Radian cable to the Radian sensor connected to your receiver. d. Click on the Connect button to connect to the Radian sensor, and check you have a connection. e. Click on the Read button. f. Take a screen shot of the Diagnostic and Configuration windows and post it to this thread with your response to Question 1 above. g. Then connect up to the other two Radian sensors in turn, do a Read, and take a screen shot of the Diagnostic Window and Configuration Window and post those screen shots too.