FrSky have a new generation 8 Channel receiver specific for glider use. With built in variometer sensor, this will give you telemetry data like altitude and vertical speed. The G-RX8 supports the redundancy function as well, this means you can add on another receiver to create a backup for added security. It also supports SBUS and PWM mode, and you can switch between the two very easily.
 
SPECIFICATION
Dimension: 55.26x17x8mm
Weight: 5.8g
Number of Channels: Up to 16 CH
Operating Voltage Range: 4.0 -10V
Operating Current: 100mA@5V
Operating Range: Full range
Firmware Upgradable
Compatibility: D16 mode
 

FEATURES
Integrate with high precision variometer sensor
Support redundancy function
Support telemetry data transmission
Switchable SBUS/PWM mode (1~8CH from PWM outputs and 1~16CH from SBUS output)