Squelch & Tone/PL

 

SQUELCH (from the intenet)

What is squelch used for?

In telecommunications, squelch is a circuit function that acts to suppress the audio (or video) output of a receiver in the absence of a sufficiently strong desired input signal.

WHAT IS THE SQUELCH ON A RADIO FOR?

In telecommunications, Continuous Tone-Coded SquelchSystem or CTCSS is a circuit that is used to reduce the annoyance of listening to other users on a shared two-way radio communications channel.

What is PL?

PL, an acronym for Private Line, is Motorola’s proprietary name for a communications industry signaling scheme called the Continuous Tone Coded Squelch System, or CTCSS. It is used to prevent a repeater from responding to unwanted signals or interference.

In telecommunications, squelch is a circuit function that acts to suppress the audio (or video) output of a receiver in the absence of a sufficiently strong desired input signal. Squelch is widely used in two-way radios to suppress the annoying sound of channel noise when the radio is not receiving a transmission. … This can be useful when trying to hear distant, or otherwise weak signals (also known as DXing).

What is DCS in radio?

CDCSS or Digital Code Squelch (DCS) is a further development of the continuous tone-coded squelch system or CTCSS that uses a slow-speed, binary data stream passed as sub-audible data along with the transmission. Motorola calls this Digital Private Line or DPL.

What is a radio repeater for ham radio?

An amateur radio repeater is an electronic device that receives a weak or low-level amateur radio signal and retransmits it at a higher level or higher power, so that the signal can cover longer distances without degradation.

FOR LOTS MORE INFO ON SQUELCH GO TO:

http://www.amateur-radio-wiki.net/index.php?title=Squelch

AND:

https://en.wikipedia.org/wiki/Continuous_Tone-Coded_Squelch_Syste

For more, much more, about Repeaters go to:

FOR MORE, MUCH MORE, ON REPEATERS:

http://www.hamradioschool.com/?s=REPEATERS

 

 

 

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