Telemetry is accomplished using two XBee 9B 900MHZ 250MW long range radio transmitters. Under line of sight conditions, these are expected to achieve a maximum range of 28 miles. We equipped both with 900 MHZ, low impedance, RP-SMA duck antennas. | Telemetry is accomplished using two XBee 9B 900MHZ 250MW long range radio transmitters. Under line of sight conditions, these are expected to achieve a maximum range of 28 miles. We equipped both with 900 MHZ, low impedance, RP-SMA duck antennas. |