64 CCR TM8100/TM8200 Computer-Controlled Data Interface (CCDI) Protocol Manual
© Tait Electronics Limited April 2007
2.8.5 Receive CTCSS Value
Description This command disables (if xxxx=0), or enables (if xxxx>0), Rx CTCSS.
If enabled, the audio mute is opened only when a given subaudible CTCSS
tone is being received (otherwise the audio mute is closed). If disabled,
muting on CTCSS is disabled. If the frequency is out of range, the radio
does not act on the command and sends a NAK (range error) back.
Command A04xxxxcc
Where:
Effect This command has immediate effect and closes the mute to signals without
a valid CTCSS tone if enabled, or opens the mute on disabling CTCSS
muting.
2.8.6 Transmit CTCSS Value
Description This command disables (if xxxx=0) or enables (if xxxx>0), Tx CTCSS. If
enabled, a CTCSS tone is transmitted whenever the radio is transmitting
audio. If the reference number is out of range, the radio does not act on the
command and sends a NAK (range error) back to the radio. If the radio is
already transmitting then a NAK response will also be sent.
Command Bssxxxcc
Where:
Effect On receipt of the request the radio stores the CTCSS tone to generate. The
radio will then generate the tone at the next PTT or Selcall encode activity.
Parameter Value
A ASCII letter A denotes the Receive CTCSS Value load command
04 ASCII hex number 04 is the number of characters for parameters
xxxx ASCII number xxxx is a receive subaudible frequency in 0.1Hz. The
valid range is 67Hz to 254.1 Hz.
cc ASCII hex number cc is the checksum
Parameter Value
B ASCII letter B denotes the transmit CTCSS value to be sent on
transmit
04 ASCII hex number 04 is the number of characters for parameters
xxxx ASCII number xxxx is a transmit CTCSS frequency in 0.1Hz. The valid
range is 67Hz to 254.1 Hz.
cc ASCII hex number cc is the checksum
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