The CM-300/350 (V2) Series from General Dynamics Mission Systems are Ground-to-Air Software-Defined Radios (SDRs) that operate in the VHF band from 112-150 MHz and UHF band from 225-399.975 MHz. They are based on the FAA NEXCOM Segment 2 requirements, providing reliable, clear, and uninterrupted communications to improve the safety of flight in the National Air Space (NAS). These radios adhere to global standards and contribute to less cost and more flexibility with integration into the radio equipment.
The CM-300/350 radios support EUROCAE ED-137-compliant VoIP connectivity for standard digital audio interfacing and remote connections in the network. They incorporate a frequency-agile co-site filter for increased RF interference protection without the need for 1-for-1 fixed frequency back-ups, thereby reducing the overall footprint. These air traffic radios deliver more modes over a broader frequency range in a rugged chassis to support current and future voice and data requirements. They also ensure unprecedented mean-time-between-failures (MTBF) for high reliability.
These radios integrate a passive cooling mechanism and require no fans, reducing maintenance costs while ensuring quiet and highly reliable operation. They support built-in testing, control (via SNMP) and diagnostics to provide comprehensive and rapid equipment status information. These SDRs deliver an output power of up to 12 W (UHF, 100% duty cycle) and 35 W (UHF, 50% duty cycle) in the Tx mode and have a sensitivity of less than -102 dBm in the Rx mode. They require an AC/DC supply of 85-256 V and 24 V, consume 3.9 A (Tx) and 270 mA (Rx) of current, and include an automatic switch-over capability for back-up power engagement. These radios are available in a passively-cooled rack-mount enclosure that measures 19.00 x 18.50 x 1.75 inches and is ideal for control centers, commercial airports, and military air station applications.
