Radio Frequency Management Systems encompass the hardware and software architectures used to control, coordinate and allocate RF spectrum across multiple airborne communication and navigation functions, covering frequency selection units (FSUs), integrated RF management units, tuning control buses such as ARINC 429 and MIL-STD-1553, and software-defined radio (SDR) management layers that arbitrate between concurrent VHF, UHF, HF and SATCOM channels.
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