You’ve just bought a used ICOM ICF-121 at a swap meet. It powers on. The squelch works. But what does “Tri-Watch” actually do? And why is CH 16 blinking?
Before diving into the settings, it’s important to know what the IC-F121 brings to the table: 136–174 MHz (VHF)
: Avoid placing the unit against walls or in direct sunlight (like a vehicle dashboard), as this obstructs heat dissipation.
You’ve just bought a used ICOM ICF-121 at a swap meet. It powers on. The squelch works. But what does “Tri-Watch” actually do? And why is CH 16 blinking?
Before diving into the settings, it’s important to know what the IC-F121 brings to the table: 136–174 MHz (VHF) icom icf121 manual
: Avoid placing the unit against walls or in direct sunlight (like a vehicle dashboard), as this obstructs heat dissipation. You’ve just bought a used ICOM ICF-121 at a swap meet