Digital Radio Repeater Training

Topics: Electromagnetic spectrum Propagation of Radio Waves above 30MHz. VHF versus UHF Digital Versus Analogue transmission. Advantages and disadvantages of digital systems, compared with analogue. Digital Repeater standards (dPMR, DMR, Tetra etc) Analogue standards Trunked Systems Pseudo Trunk Antenna systems Coaxial lines, and considerations Impedance mismatch implications Code Plugs and system programming Designing a reliable …

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