This is the ideal solution for long range telemetry or communications.  Two RFD900 modems with antennas for all antenna ports.

The kit consists of:

2 x RFD900 Radio Modems

2 x Antennas, 900MHz Quarter wave monopole 2.1dBi

2 x Antennas, 900MHz Half wave dipole 3dBi

1 x FTDI USB cable

You get a cheaper price when purchasing a whole kit !