Which of the following is NOT a common failure mode when a radio shows 'no power'?

• A. Loose antenna connection.
• B. Dead battery.
• C. Damaged power connector.
• D. Faulty power switch.

Answer: (A)

When a radio shows no power, the issue lies in the power path, not the RF path. The antenna is part of the RF chain, not the supply chain, so a loose antenna connection won’t remove the radio’s supply current. It would typically cause poor transmit/receive performance, not a complete power-down.

In contrast, a dead battery removes the source of power to the radio, a damaged power connector can block power from reaching the circuitry, and a faulty power switch can prevent the battery from feeding the radio at all. So the antenna connection being loose is not a common cause of a no-power condition, making it the best answer in this context. If no-power is observed, start by verifying the battery, its contacts, the power switch, and the power connector.