Across all of North America, the National Simplex Frequency (also referred to as the calling frequency) is 146.52 MHz. … What Frequency Do I Use on 2 meters? 144.000-144.100CW (Continuous Wave, Morse Code)146.400-146.595FM Simplex (National Simplex Frequency =146.52 MHz)146.610-147.390FM Repeater OutputsWhat Frequency Do I Use on 2 meters? – Ham Radio School www.hamradioschool.com › post › what-frequency-do-i-use-on-2-meters