Motorola XPR 5550 用户手册

During scanning, your radio stops on a channel/group where 
activity is detected. The radio stays on that channel for a 
programmed time period known as “hang time”. 

 If the Channel Free Indication feature is enabled, you 

hear a short alert tone the moment the transmitting radio 
releases the PTT button, indicating the channel is free for 
you to respond.

Press the PTT button during hang time. The green LED 
lights up.

Wait for the Talk Permit Tone to finish (if enabled) and 
speak clearly into the microphone.
OR

 Wait for the PTT Sidetone to finish (if enabled) and 

speak clearly into the microphone.

Release the PTT button to listen.

If you do not respond within the hang time, the radio returns 
to scanning other channels/groups.

If a channel continually generates unwanted calls or noise 
(termed a “nuisance” channel), you can temporarily remove the 
unwanted channel from the scan list.

This capability does not apply to the channel designated as the 
Selected Channel.

When your radio “locks on to” an unwanted or nuisance 
channel, press the programmed Nuisance Channel Delete 
button until you hear a tone.

Release the Nuisance Channel Delete button. The 
nuisance channel is deleted.

Procedure: 
To restore the deleted nuisance channel, do one of the 
following:

Turn the radio off and then power it on again, OR

Stop and restart a scan via the programmed Scan button or 
menu, OR

Change the channel via the Scroll Up/Down buttons.