The ARC-231 Skyfire is a software-definable radio for military aircraft that provides two-way, multi-mode voice and data communications over a 30 to 512 MHz frequency range. It covers both line-of-sight Ultra High Frequency (UHF) and Very High Frequency (VHF) bands with AM, FM and SATCOM capabilities, including Integrated Waveform (IW).The ARC-231 radio also includes embedded anti-jam waveforms, including Havequick and SINCGARS, and other data link and secure communications features, providing battlefield interoperability. The radios utilize the MIL-STD-1553 data bus.