Software-defined radio (SDR)
A radio whose waveform, band and encryption are reconfigured in software rather than hardware.
A software-defined radio (SDR) implements its signal processing in software, so waveform, frequency band and encryption can be reconfigured in the field rather than replaced in hardware. One platform can evolve with the mission and the threat environment, updated on operational timescales instead of the procurement cycle, and free of the upgrade-locks major-power radios often impose.
In practice
Software-defined radio is attractive to defence buyers because the capability can keep pace with the threat rather than the procurement cycle. Unstrat sources SDR platforms whose waveform, band and encryption can be reconfigured in the field, so a single platform evolves with the mission instead of being replaced in hardware. The advantage is agility: the buyer adapts on operational timescales and protects communications as the electromagnetic environment shifts. Crucially, sourcing from independent manufacturers avoids the upgrade-locks that major-power radios often impose, keeping custody of the capability and its encryption with the buyer. As the accountable single channel, Unstrat stands behind the platform and its evolution rather than passing the buyer to a foreign vendor's roadmap. Localisation arrangements are scoped per programme, subject to export controls and end-use approvals.