CTCSS/PL Explained
Many hams know they generally need to use Continuous Tone Coded Sequelch System (“CTCSS”) to access an FM repeater. CTCSS, or more commonly referred to as “PL tone” or “PL” which is an acronym for Motorola’s implementation of it branded Private Line, was introduced in the 1950s by Motorola to share frequencies used for land […]
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