Filter
Top Products
User Manual SL1000
Page 15
English
CTCSS/DCS
The SL1000 Series radio(s) support 2 kinds of squelch options. A different squelch option can be
applied to each channel. Sub Audible Tone (SAT) codes are made up from frequencies which are
below 300Hz. These frequencies are lower than the voice audio band. The two most common
forms of SAT codes are CTCSS, Continuous Tone Coded Squelch System, and DCS, Digitally
Coded Squelch.
CTCSS/DCS information may be added to speech during transmission. A receiving radio can then
be programmed to behave according to which tones or codes are being sent by a transmitting
radio.
The SL6000 Series radio(s) are capable of generating all 47 standard CTCSS tones and can also
generate the 83 standard DCS codes and 83 inverted DCS codes.
CTCSS
47 kinds of TIA/EIA Standard CTCSS Tones can be set up. All tones can be set up using PC
Programmer.
TX Operation: If PTT key is pressed, the radio transmits programmed CTCSS tone.
RX Operation: If a CTCSS Tone is detected, the Radio status is changed from Busy to Correct
Call. If the CTCSS Tone is not detected, the radio will stay in Busy mode or change from Correct
Call to Busy mode and no audio will pass through the speaker.
DCS
The radio supports 83 kinds of TIA/EIA Normal/Inverted DCS codes.
TX Operation: If PTT key is pressed, the Radio transmits pre-programmed DCS Bit pattern.
RX Operation: If DCS Data Stream is detected, the radio status will change from busy mode to
correct call. If DCS data stream is not detected, the radio will stay in busy mode or be changed
from correct call back to busy mode.
English