Ground-end digital transmission station: The ground-end digital transmission station communicates with the ground station through the RS232 or TTL interface, and supports the remote control SBUS or PPM signal input. When it is PPM input, it will be converted to SBUS signal and sent to the ground station together with the control data of the ground station. br> At the same time, the air-end data transmission station transmits the flight control data of the air-end data transmission station to the ground station. Air-end data transmission station: The air-end data transmission station communicates with the flight control through the RS232 or TTL interface, which can send flight control data to the ground-end data transmission station, and receive the ground station control data and remote control SBUS signal sent by the ground-end data transmission station. Send to the flight controller.

Main parameters of the receiving end
Transmission distance	50-160KM
Input voltage	DC9~48V (support 3S~12S)	XLR module input voltage DC3.8~5.5V
Input current	About 800mA@DC12V	Note: The sending current of the XLR module is 1.58A@DC5V, and the receiving current is 295mA@DC5V
Output voltage	DC5V
Working frequency band	IMS 902~928MHz
Communication distance	Indoor/city distance: 9.4kb/s: maximum 40KM; 141kb/s: maximum 12.8KM; 591kbs: maximum 5.76KM; 3.2Mb/s: maximum 1.6KM
	Outdoor distance: 100+KM@1.2Mbps, using 6dBi Yagi antenna
Transmit power	+30dBm max
Receiving sensitivity	-120dBm@9.4kb/s
Air rate	9.4kb/s~3.2Mb/s
SPI rate	Max 6Mb/s
Spread spectrum technology	CSS
Encryption method	AES-128
XLR authentication	FCCID: MCQ-XLRP; IC: 1846A-XLRP
Product size	106*54*20.6mm	With antenna connector, without antenna
Product weight	128.4g	With antenna connector, without antenna