// @Description: This sets the channel for transmitter tuning. This should be connected to a knob or slider on your transmitter. It needs to be setup to use the PWM range given by TUNE_CHAN_MIN to TUNE_CHAN_MAX
// @DisplayName: Transmitter tuning parameter or set of parameters
// @Description: This sets which parameter or set of parameters will be tuned. Values greater than 100 indicate a set of parameters rather than a single parameter
// index 2 and 3 reserved for old MIN and MAX parameters
AP_GROUPINFO("CHAN",1,AP_Tuning,channel,0),
// @Param: RANGE
// @DisplayName: Transmitter tuning range
// @Description: This sets the range over which tuning will change a parameter. A value of 2 means the tuning parameter will go from 0.5 times the start value to 2x the start value over the range of the tuning channel
// @Description: This sets the channel for the transmitter tuning selector switch. This should be a 2 position switch, preferably spring loaded. A PWM above 1700 means high, below 1300 means low. If no selector is set then you won't be able to switch between parameters during flight or re-center the tuning knob
// @Description: This sets the channel for the transmitter tuning selector switch. This should be a 2 position switch, preferably spring loaded. A PWM above 1700 means high, below 1300 means low. If no selector is set then you won't be able to switch between parameters during flight or re-center the tuning knob
// @Description: This sets the range over which tuning will change a parameter. A value of 2 means the tuning parameter will go from 0.5 times the start value to 2x the start value over the range of the tuning channel