440 MHz simplex frequencies

To work simplex with your DMR or C4FM radio please do not use the FM analog national call frequencies 2m (146.520 MHz) or 70cm (446.000 MHz). … DMR or C4FM Simplex Frequencies. ChannelFrequencyAdmit Criteria (DMR only)1 (UHF)441.000 MHzFree or Always2 (UHF)446.500 MHzFree or Always3 (UHF)446.075 MHzFree or Always4 (UHF)433.450 MHzDMR or C4FM Simplex Frequencies. – 0x9900 0x9900.com › dmr-or-c4fm-simplex-frequencies

Simplex communication is a communication channel that sends information in one direction only . The International Telecommunication Union definition is a communications channel that operates in one direction at a time, but that may be reversible; this is termed half duplex in other contexts.

LPD433 (low power device 433 MHz) is a UHF band in which license free communication devices are allowed to operate in some regions. The frequencies correspond with the ITU region 1 ISM band of 433.050 MHz to 434.790 MHz, and operation is limited to CEPT countries.

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