Icom Icf121 Manual Jun 2026

The transceiver requires an antenna system with a 50-ohm characteristic impedance.

(p.4–6):

: The IC-F111/F121 Instruction Manual from ICOM Canada covers the basic operation, panel description, and safety information. icom icf121 manual

Periodically check the antenna system using an SWR meter to ensure a reading below 1.5:1, protecting the RF power amplifier from overheating. Keep the rear cooling fins clear of dust and obstruction.

• Blown fuse.• Loose power cable connection.• Defective power supply/battery. The transceiver requires an antenna system with a

Proper installation ensures the longevity of your transceiver and prevents damage to the vehicle's electrical system. Mounting the Radio

While holding the [P0] and [P1] keys (usually the first two, depending on programming), turn the power ON. Keep the rear cooling fins clear of dust and obstruction

Adjusting the threshold at which the radio opens its audio to filter out static.