I'm using RFM22B radio modules and ATMEGA328P chips on Rx and Tx.
Rx modules including 8 channel servo ports and RS232 for telemetry uplink
Tx modules including PPM-Input for analog servo control and RS232 for Computer based controls and Telemetry downlink.
System range will be around 4-5km.
Firmware Upgradeable over RS232.
Ground tests was unbelievable, it's working around 500 meters into the city (after 20+ concrete building)
I will share the flight test results, sources and schematics soon.
If you have any idea about design and inputs, please share with me before 4th generation's production..
Thanks for reading