Which of the following is a limitation of traditional radios compared to SDRs?

Limited frequency compatibility is indeed a significant limitation of traditional radios when compared to Software-Defined Radios (SDRs). Traditional radios are typically designed to operate on specific frequencies and modulation types. This means their functionality can be constrained to a narrow band of signals, making them less versatile in rapidly changing operational environments or when interoperability with different communication systems is required.

On the other hand, SDRs can be programmed and reconfigured to operate across a wide range of frequencies and can adapt to multiple communication standards. This flexibility allows military operations to be more efficient, as SDRs can be tailored to meet the specific needs of various missions without requiring multiple different radios. Thus, limited frequency compatibility restricts the effectiveness and adaptability of traditional radios in dynamic communication scenarios.