Contents
What does PL tone stand for?
Private Line Tone
PL Tone stands for Private Line Tone, DPL is Digital Private Line. It is a sub-frequency that filters out other radio user’s transmissions on the same frequency in the area. You can and should still “monitor” the frequency first before transmitting of the channel.
What is a PL on set?
PL = Private Line. CTCSS = Continues Tone Coded Squelch System. DPL = Digital Private Line. DCS = Digital Coded Squelch.
What is a radio private line tone?
In radio or wireless telephony, Private Line is a term trademarked by Motorola to describe an implementation of a Continuous Tone-Coded Squelch System (CTCSS), a method of using low-frequency subaudible tones to share a single radio channel among multiple users. Each user group would use a different low frequency tone.
What is TPL squelch?
Squelch Type The three squelch types – Tone Private-Line (TPL), Digital Private-Line (DPL), and Carrier Squelch (CSQ) – can be independently assigned to each Receive and Transmit frequency. For TPL, use Motorola Standard codes or any frequency between 67 Hz and 250 Hz in 0.1-Hz increments.
What does PL stand for in ham radio?
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.
What is a PL frequency?
Technically speaking, PL tones are sub-audible tones that are transmitted simultaneously with the speech portion of the transmission. It is these tones that prevent other people from receiving the transmission.
What does CTCSS mean?
Continuous Tone Coded Squelch System
In conventional radio, one of the most used and sometimes misunderstood features is CTCSS, which stands for Continuous Tone Coded Squelch System.
Is there a standard tone number for PL?
There is no generic standard tone number assignment or code letter to go with a particular tone; however, below is a chart of the commonly accepted 50 tones used at this time. In addition to these standard PL tones, there are also “Color Dot” frequencies that can be accessed through business two-way radios.
Why do I need a PL tone on my Radio?
However, by activating a sub-audible PL tone, the radio receiver will remain off until it hears a signal that was definitely meant to be repeated. One industry that often uses PL tones is the security industry. For example, let’s say a security company needs to monitor a particular frequency 24 hours a day for a specific protection detail.
What’s the difference between CTCSS tone and PL tone?
In amateur radio, the terms PL tone, PL and simply tone are still used somewhat commonly. Often, there is a distinction between the terms tone and tone squelch , in which the former refers to the use of transmitting a CTCSS tone while using standard carrier squelch on the receiver.
How many cycles per second does a PL tone go?
Typically, these tones will start at 67 cycles per second or hertz and go as high as 254 htz. Sometimes these are referred to as sub-audible tones or tones that cannot be heard by the human ear.