Tait TM8250 User Manual page 25

Audible tones
If quiet or silent mode has been turned on, you will not hear
any audible tones.
For a description of other tones you may hear, see
"Describing the radio's audible tones" on page
Tone type
one short
beep
one long,
low-pitched
beep
one short,
low-pitched
beep
26 Getting started
Meaning
Valid key press: the action you have attempted is
permitted, or
Function activated: a function key has been pressed and
that function has been activated
Invalid key press: the action you have attempted is not
permitted, or
Transmission inhibited: you have attempted to transmit
but for some reason transmission is not permitted at
this time
Function deactivated: a function key has been pressed
and the corresponding function has been turned off
91.