Tait International Limited TPDH5D User Manual

Your radio may be programmed to play a pre-
recorded message for the start-up channel, when 
changing a channel, for the battery condition, or when 
loneworker monitoring has been turned on or off.

Two low-
pitched beeps

Radio’s temperature is high: The radio’s 
temperature is in the high-temperature 
range, but the radio will continue 
to operate.

Two high-
pitched beeps

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. Turn off 
the radio and allow it to cool down.

Continuous 

low-pitched 

tone

Radio system error: A system error has 

occurred and the radio may be inoperable. 

Contact your radio provider.

Two long high-
low pitched

 

tone pairs

Synthesizer is out-of-lock: The radio’s 
synthesizer is out-of-lock on the current 
channel and you cannot operate on that 
channel

 

(Out of Lock appears on the 

display).