Hello, please advise. I've had a Royal SX for several years and today while flying I got a wobbly sound from the transmitter for about 3s. Looking at the display, I didn't see anything. After a while this sound came again, so I thought about the voltage of the receiver battery. The display showed 8.2V, the discharge limit is set to 6.5V in the menu. Is there another function signaled this way? I've had the settings unchanged for several years and it's the first time it's worked for me. Thank you for the advice. Jaroslav
