03-23-2026, 01:12 PM
The RFU is actually -107dBm in a controlled test.
You should be able to turn on/off the transmitter and if the failsafe is really set to HOLD last position (and not USER defined) then the servos should stay put. You should not see any amount of movement. Unless you deliberately changed the RFU's settings the failsafe defaults to USER defined with preset positions at 1500us. It is recommended that you do the live-active failsafe setup. You do that by powering on your system so you can move the servos and then press and HOLD the button on the RFU until the LED started flashing red/green. You will have about 7 seconds to positions the sticks and switches on the transmitter where you want them during a failsafe condition. Typically this will be all neutral sticks. The purpose of failsafe is not to save your aircraft - it is to provide you with some insight of where the crash will most likely occur so that people can be moved out of the way. We typically provide a small amount of up elevator and rudder to cause a deliberate spiral pattern during a failsafe condition.
The RFU works down to 2.1v, so the voltage level you are talking about will not affect it.
You should be able to turn on/off the transmitter and if the failsafe is really set to HOLD last position (and not USER defined) then the servos should stay put. You should not see any amount of movement. Unless you deliberately changed the RFU's settings the failsafe defaults to USER defined with preset positions at 1500us. It is recommended that you do the live-active failsafe setup. You do that by powering on your system so you can move the servos and then press and HOLD the button on the RFU until the LED started flashing red/green. You will have about 7 seconds to positions the sticks and switches on the transmitter where you want them during a failsafe condition. Typically this will be all neutral sticks. The purpose of failsafe is not to save your aircraft - it is to provide you with some insight of where the crash will most likely occur so that people can be moved out of the way. We typically provide a small amount of up elevator and rudder to cause a deliberate spiral pattern during a failsafe condition.
The RFU works down to 2.1v, so the voltage level you are talking about will not affect it.