"I have tested the simlar hobbyking 500mW telemtry module which called RF4432D27. @9600bps the RF range is about 4000m in the open air. @19200bps or @38400bps the range is about 2000m long. The high data rate will decrease the range rapidly. LoRa run…"
"We have also tested both LoRa and FSK modules. The LoRa modulation is very impressive in the low data rate compared to the FSK modulation(RF4432). In the air data rate at 5000bps, FSK modulation is just 1km of the working distance(@100mW output).…"
"DRF4432F27 is a front end module with SPI port. It need external MCU to drive the module. There are many kinds of UART module integrated MCU inside. Such as RF4432D27 with shield coverd.
Nowadays, The LoRa module RF1276 is popular in the ISM band…"
"2W is very high power for wireless. Compared to 500mW, the range is not increasing rapidly. SNR6202 adopted old type of RF IC.
Have you tried the LoRa solution? It is much higher sensitivity than SNR6202. Only 100mW can run over 5kilo meters.
"ISM band are vary from different countries. 2.4GHz is common in all over the world. But the distance is not suitable for the UAV telemetry. In the Sub-Ghz band, 433MHz, 315MHz, 868MHz and 915MHz are all available between different countries.…"