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20 Ιαν 2014 · Tone Squelch tells the repeater to respond only to stations that encode or send the proper tone. Most repeaters are “PL’ed”, due to the sheer number of radios and repeaters in their area. A repeater tone filters noise by adding a low-frequency audio tone to the voice.
7 Δεκ 2005 · Using your tones will help filter out the unwanted traffic. how do you enter one of these csq tones? I have a Pro-97. For the '97 you'll want to press mode while on the channel for the frequency you want. For your county sherriff for instance you'll want to press mode until CT comes up on the upper right corner of the display.
CTCSS is often referred to as a "PL" tone by many users. Many repeaters require the use of a PL tone to access the repeater. The frequency that a user transmits to access a repeater is the Repeater CTCSS Encode Frequency. The frequency that the repeater transmits to the user is the Repeater Decode Frequency.
7 Ιουν 2024 · The PL tone scheme, technically called Continuous Tone Coded Squelch System, CTCSS, was enacted by the Electronics Industry Association a predecessor to the TIA as a standard in about 1948. Initially tones were spaced 3.5% apart from about 100-206.5 HZ.
30 Αυγ 2020 · How does the radio know if it's the right PL tone and how to use it to activate a circuit? The PL decoder is a filter that only the desired tone will make it through. If after the signal is processed, there's a valid tone detected, the detector circuit generates an output signal that opens squelch.
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…
PL (private line) tones or CTCSS (continuous tone-coded squelch system) tones, are sub-audible tones (300hz and below) that are transmitted and looked for (transmit and receive) by radios and repeaters.
