JETStream jt270m User Manual page 25

it can neither be transmitted nor decoded.
Enable Or Disable DTMF Signaling
1, In VFO / MR mode, select a frequency or memory
channel to modify DTMF signaling. Alternatively,
you can enable DTMF signaling in the programming
software.
Note:
a), If the transceiver is in CH mode, you can not enable or
disable DTMF signaling from the transceiver's front panel. In
CH mode, this setting can only be modified from the
programming software.
b), In MR mode, each memory channel can be independently
set to have DTMF signaling enabled or disabled.
2, Press the "M" key and use the "CHA+" and
"CHA-" or "VOL+" and "VOL-" keys to select Menu
06. Press the "M" key to open the menu, and select
"ON" or "OFF" to enable or disable DTMF signaling.
The default setting is ON. Once you have made your
selection, press the "M" key to accept the change,
followed by the
Individual call/ group call
Individual call: Using programming software, set the
transceiver's individual ID code. This can be any code
of up to 15 characters, using the digits 0-9, *, #, A, B,
key to exit the menu.
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