What allows SDRs to support multiple communication protocols effectively?

Software-driven architecture is what enables Software-Defined Radios (SDRs) to support multiple communication protocols effectively. This architecture allows for the flexibility and adaptability necessary to modify or upgrade the radio's capabilities through software updates rather than requiring new hardware.

With software-driven systems, SDRs can be programmed to operate on different frequencies and protocols, accommodating varying communication standards such as military, commercial, and private sector protocols. This adaptability is crucial in tactical communications, where the operational environment can change rapidly, and the ability to switch communication methods can significantly enhance operational effectiveness.

In contrast, fixed hardware components would limit the SDR's ability to adapt to new protocols since any change would necessitate hardware modifications. Low-bandwidth requirements do not contribute to a radio's ability to support multiple protocols; instead, they pertain to the efficiency and transmission capability of the radio itself. Legacy operating systems could hinder flexibility and innovation, as they may not support newer protocols as effectively as modern software systems designed for SDRs.