Tait TM8105 User Manual page 22

Tone type
one short, high-
pitched beep
two low-pitched
beeps
two high-pitched
beeps
continuous low-
pitched tone
two long low-
high pitched tone
pairs
22 Troubleshooting
Meaning
radio is stunned: the radio has been made
inoperable by your service provider
radio's temperature is high: the radio's
temperature is in the high-temperature
range, but the radio will continue
to operate
radio's temperature is very high: the radio's
temperature is in the very high temperature
range and all transmissions will now be at
low power; if the radio's temperature rises
outside this range, transmissions will
be inhibited
radio system error: a system error has
occurred and the radio may be inoperable
(E, E1 or E2 appears in the display)
synthesizer is out-of-lock: the radio's
synthesizer is out-of-lock on the current
channel and you cannot operate on that
channel (L or OL flashes in the display)