Ooops I missed the 32 kilometers !
Then rfdesign.com.au have RF modem compatible with ppm in/out RF900X has the power..
applications requiring best in class radio link performance.
Long range >40km depending on antennas and GCS setup
2 x RP-SMA RF connectors, diversity switched.
1 Watt (+30dBm) transmit power.
Should do for your application..