These are the dual frequency tones sent over the air to control remote equipment such as a DStar node or repeater.
In addition to linking and unlinking reflectors by means of the UR entry as documented in the radio's handook the controlling of linking and unlinking can be controlled by DTMF commands. This includes CCS callsign routing.
It is much more convenient to use the DTMF codes than trying to alter rig settings on the fly and also you only need one rig memory for each gateway you are going to use
The commands are:
DTMF Command Equivalent UR Command Comment
“B1A” or “B01A” XRF001AL Link to DExtra reflector XRF001 A
“*1C” or “*01C” or “*001C” REF001CL Link to D-Plus reflector REF001 C
“D5B” or “D502” or “D0502” or “D00502” DCS005BL Links to DCS reflector DCS005 B
"D523" or "D0523" or "D00523 DCS005WL Links to DCS reflector DCS005 W
"B55A" or "B055A" XRF055AL Links to X reflector XRF055A
“#” _______U Unlink
“0” or “00” _______I Trigger a voice announcement
The underscore character is used to indicate a space character in the actual setting of the UR callsigns.
THe Gateway will then transmit a voice announcement stating which reflector it is linking to
You can send DTMF code 00 at any time to find out which if any reflector is currently linked
The different radios use different methods to access the DTMF tones and although it appears to be still written in "double Dutch" please persevere with the manual for your individual transceiver to access this feature.
NB: not all nodes / repeaters use this system but in the South West / Wales, we all do. Please NEVER leave the node / repeater unlinked when you are finished
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