5/3/2023 0 Comments Dmr simplex channelsYou also need to know shift direction +up or –down.Īnother important thing need to know: for an analog repeater, you need to know the access tone, also can say CTCSS/DCS. Uplink frequency: this is the repeater receive frequency which you need to set as a transmit frequency on your radio.įrom this we can know that the repeater use two different frequencies, they have a shift offset. Usually the repeater will have much greater range than you will if transmitting from a handheld or mobile radio.ĭownlink frequency: this is the repeater transmit frequency which you need to set as a receive frequency on your radio. It picks up your transmission and simultaneously re-transmits it. The repeater is a device consisting of a transmitter and a receiver. Two radios can communicate with each other.īut for repeater, you should to know what is a repeater, the repeater frequency, shift offset? Simplex, it is very easy to understand, for the radio, Use the same frequency, transmit from radio A to radio B. Today, let us learn the difference between simplex and repeater. I often get confused how to operate a radio connect to a repeater, the shift frequency downlink and uplink. One is simplex, the other more popular way is using a repeater. From the beginning when I learn the ham radio knowledge, There are two basic ways to using your radio.
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