TD R18

1. Fixed the issue of missing telemetry working above 25mW RF power in EU mode.

1. Fixed the issue of incorrect behavior of the Xact servo working in FBUS mode once powering on the receiver.
2. Added the support of telemetry data transmission through 2.4G link in the TD mode (The telemetry via 2.4G link can be also achieved under sufficient range with the RF power settings above 25mW in EU mode).
Critical Note: TANDEM TD-ISRM RF Module firmware >=2.2.6 / TD-ISRM Pro >=1.1.13 must be installed. Please use ETHOS Suite to update the RF Module via the FRSK Flasher tab.

1. Added the 25mW option of the telemetry power. (The telemetry power of 2.4G and 900M bands is synchronized while the option is selected.)