Describe a typical field procedure to attach and detach an antenna on the PRC-160/PRC-163.

• A. Power off, connect securely, tighten couplers, verify mechanical fit, and re-check SWR after mounting
• B. Power on, connect securely, tighten couplers, verify mechanical fit, and re-check SWR after mounting
• C. Power off, connect loosely, remove quickly, test SWR
• D. Power off, connect securely, tighten couplers, verify mechanical fit, but do not re-check SWR

Answer: (A)

Starting with powering the radio off is essential. This protects you from RF energy and prevents arcing while you handle the antenna and connectors. Then connect the antenna securely and tighten the couplers until they’re snug, so the connection is both mechanically solid and electrically reliable. It’s important to verify the mechanical fit—make sure the antenna is seated correctly, there’s no undue strain on the feedline, and nothing will work loose in operation. After mounting, re-check the SWR to confirm the feed point is well matched to the antenna at the operating frequencies. Rechecking SWR after installation catches any changes in impedance or mounting-related issues, preventing excessive reflected power that can damage the transmitter or degrade performance. The other options miss one or more of these safety, mechanical, or electrical checks: powering up during attachment raises safety and equipment risk, loose or quick connections don’t guarantee a solid, proper fit, and omitting the SWR check leaves you blind to a poor match after mounting.