Ethos v1.5.7 and X18, X20 series User Manual
The antennas must be changed to suit the frequency selected.
Both versions allow configuration of different power levels.
Note for EU users: The use of 200mW and 500 mW is allowed in the 868 MHz band.
And with the latest TD Update and RF update these power levels work with telemetry
also. For compliance, if you select 25mW the telemetry data will be sent via 868MHz,
while with 200mW or 500 mW the telemetry data will be sent via 2.4G.
Notes:
a) with ACCESS you can have a mix of up to three 900M or 2.4G receivers
b) the ACCST D16 option is 2.4G only
c) with TD mode you can have three TD receivers