for other tasks. A total of 3124 channel combinations are available when the 22 channels are combined with the 142 privacy codes (38 CTCSS/104 DCS)

GMRS/FRS radios offering CTCSS codes typically provide a choice of 38 tones, but the tone number and the tone frequencies used may vary from one manufacturer to another (or even within product lines of one manufacturer) and should not be assumed to be consistent (i.e. "Tone 12" in one set of radios may not be "Tone 12" in another).

Below find a listing of all the Private-Line (PL), or CTCSS codes, sorted by number and by tone frequency. PL Tones Sorted By Code; Code: Frequency: Code: • CTCSS - Continuous Tone Controlled Squelch System. Also known by various trade names such as Private Line (PL), Channel Guard and Quiet Channel. In CHIRP it is called Tone for transmit and TSQL for receive. • Split tones - Transmitting and receiving different CTCSS tones or DCS codes. In CHIRP this is called Cross Mode. 2019-11-11 · CTCSS, also known as Private Line and Channel Guard, is a low continuous tone transmitted on NFM voice transmissions that is used to squelch and manage transmissions on a given frequency.

Ctcss codes

A later Digital-Coded Squelch (DCS) system was developed by Motorola under the trademarked name Digital Private Line (DPL). General Electric responded with the same system under the name of Digital Channel Guard (DCG). Newer Yaesu 50-tone CTCSS list A different 38 tone list (missing 7 standard tones, adds 3 unique tones) 41 tones 47 tones Many ICOM radios Moto 1965 list of 26 tones EIA Grp A EIA Grp B EIA Grp C Moto standard code list (42 tones) EIA/TIA RS-220 standard (37 tones) Comment; 67.0: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1 : A : XZ or L1: 1: Listed as 67.1 in The Continuous Tone Coded Squelch System, commonly referred to as CTCSS, has been in used in the land mobile radio arena from the late 1960’s. It is known by a number of different trade names such as Private Line ® (PL) by Motorola, Channel Guard ® (CG) by General Electric and generically as tone squelch.

Om CTCSS- eller DCS- symbolen blinkar betyder det att den som sänder ej har Pilottonsystemet CTCSS (Continuous Tone Code Squelch. System) är en s.k Microphone appropriate communication radio HM70, with keypad for transmitting CCIR or CTCSS codes of the radio, and set channel from the microphone mm.

Seite 22 - Setting the CTCSS code · Seite 23 - Voice-controlled send function (VOX) · Seite 24 - Searching for a CTCSS code · Seite 25 - Dual scan · Seite 26

Code Squelch): Dessa system använder en speciell typ av signa- lering (en kontinuerlig subton Pilottonsystemet CTCSS (Continuous Tone Code. Squelch System) är en s.k underbandston som fungerar som ett filter.

On Display. Frequency. Tone. CTCSS. 1. P1. 446.00625. 2. P2. 446.01875. 3. P3. 446.03125. 4 DCS (Digital Code) TONE TABLE: 104 codes. N° CODE N°

If the radio receiver chooses to, it can keep the radio squelch circuit silent unless a particular tone is found. This video explains the basic technical principles behind CTCSS (continuous tone coded squelch system) and DCS (digitally coded squelch) as well as how they CTCSS stands for Continuous Tone Coded Squelch System. Basically what it does is this: it adds a tone into your transmission at a certain frequency. Other radios must have the same CTCSS tone or code set to hear the transmission. It will also be heard if the radio has CTCSS and DCS off.

Uniden, Motorola, and Backcountry Access just keep the privacy code numbers going, and switch from CTCSS to DCS at code 39. This is obviously not desirable and a system known as CTCSS (Continuous Tone Coded Squelch System) has been introduced to overcome this problem. CTCSS uses a sub-audible tone transmitted on the signal of the transmitter trying to access the repeater. The amateur radio repeater has a very sharp filter to detect whether the exact tone is present.
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CTCSS is an analog system. A later Digital-Coded Squelch (DCS) system was developed by Motorola under the trademarked name Digital Private Line (DPL). General Electric responded with the same system under the name of Digital Channel Guard (DCG). The generic name is CDCSS (Continuous Digital-Coded Squelch System).

It functions the same way as CTCSS. The only differences are the encode/ decode method and the number of selectable codes. For DCS, you can select from 104 different codes. Note: CTCSS/ DCS does not cause your conversation to be private.