It is a sometimes called “direct” and uses one frequency in the amateur radio band to transmit and receive a signal directly to another radio. Simplex is also used in amateur communications. When you are using a little store-bought FRS walkie talkie, you are communicating in simplex mode. It uses a single frequency for the transmission and receiving of a radio signal. Simplex radio communications is the simplest means of communications. Here is a simplified explanation of simplex and repeater operations as well as some advantages and disadvantages to serve your preparedness objectives. However, to unlock its capabilities it is important to first understand some of its most popular means simplex and repeater communications. You can find many repeater information on repeaterbook website like below picture show.An amateur radio license brings a multitude of communications capabilities to the table.
But on a digital repeater, you need to know color code set on the repeater. The tone is not always used, but if the repeater is programmed for a tone then it will not repeat any signals it receives that do not have a tone on it. You 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.
0 kommentar(er)
