What unique feature does the AN/MRC-145 radio set offer?

The AN/MRC-145 radio set is designed with a dual-configuration feature that allows it to be used in both vehicle-mounted and portable setups. This flexibility is crucial for military operations, where adaptability to different environments can enhance communication capabilities significantly. The vehicle configuration enables stable and reliable communication during transport, while the portable setup allows for deployment in various tactical scenarios where mobility is essential.

The other options do not accurately represent the unique features of the AN/MRC-145. Long distance satellite tracking, submersible communication, and integrated GPS navigation are capabilities associated with other communication systems but are not defining characteristics of the AN/MRC-145 itself. By focusing on its dual-configuration, one can appreciate how this feature enhances operational effectiveness in diverse situations.