Notes for OpenTX/EdgeTX:
This fix doesn't exhibit servo jitter if failsafe mode was left on Custom, however it is still recommended to set failsafe mode back to Receiver after setting failsafe values.
It is still necessary to wait at least 8 seconds switching back from failsafe mode Custom to failsafe mode Receiver as OpenTX/EdgeTX will trigger the data transfer in Custom mode only every 7 seconds.
Bench tested with HoTT receivers GR-16, GR-24pro, GR-32
Flight tested with HoTT receiver GR-24
Reasoning: The OpenTX sensor "RSSI" is populated by the individual OpenTX telemetry protocol implementations and returns a value from 0..100 (percent) originating from the early FrSky implementation. It turns out that FrSky did not really provide a genuine signal strength indicator in units of dbm but a link quality indicator in 0..100%. With Graupner HoTT the link quality indicator is not a good basis for the model locator as it is very non-linear and doesn't change much with distance. Using the Graupner HoTT telemetry sensor "Rssi" which is a true signal strength indicator serves the purpose of locating a model much better as it varies much more with distance.
Michael