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What is Simplex versus Repeater mode in Ham and GMRS radio. Updated Apr 5, 2022. 2 года назад


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What is Simplex versus Repeater mode in Ham and GMRS radio. Updated Apr 5, 2022.

This is a slightly updated video of a previous video I posted. I created a dedicated channel for just Ham Radio and GMRS here. A short and simple explanation of what the words SIMPLEX and REPEATER (DUPLEX) modes mean in 2-way radio communications. DUPLEX is another term used to describe a repeater frequency pair because the transmit and receive frequency is not the same frequency. Another meaning of DUPLEX is when some commercial grade mobile radios (ex: Motorola) can both talk and listen to a repeater at the same time, and hear themselves as they are transmitting. For this reason, the term REPEATER is more commonly used than DUPLEX. SIMPLEX & REPEATER is used in ham radio and GMRS when operating on the VHF & UHF bands. Simplex is point-to-point, line-of-sight, direct radio transmission between two or more radios all operating on the same transmit and receive frequency to talk and receive. Repeaters are typically high elevation relay stations that repeat the transmission of one radio on a frequency, and re-transmitted on a different frequency where the listening radio will be receiving and listening. This happens automatically. I will explain how the repeater frequency set up in the radio is done in more detail in another video. #ham #simplex #duplex #repeater

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