Tyco mm23772 ユーザーズマニュアル

36 

1.  Press the 



 or 



 buttons to cycle through the menu until “Mode Menu” is displayed. 

2.  Press 



 or 



 to select the desired operating mode. 

3.  Press 



 and use 



 or 



 to select Y or N. 

4.  Press 



 again to make selection and return to the dwell display 

As soon as the radio completes the initialization sequence and registers on the OpenSky network, the user 
will begin to hear calls from the talk groups in the active profile, if available.  

No action is required on the part of the user. 

The caller’s alias is only shown when the selected talk group matches the received talk group. Otherwise, 
the name of the received talk group is displayed. 

1.  Select the desired talk group.  

2.  Depress and hold the PTT button, wait a couple of seconds. If programmed by the administrator, a 

grant tone will be sounded. 

3.  Begin speaking into the microphone in a normal voice.  

4.  For maximum clarity, hold the radio approximately 2 inches from your mouth. Take care not to cover 

up the microphone while speaking. 

5.  Release the PTT button to terminate an outgoing voice call. 

The tone of received signals can be adjusted using the radio’s “Treble Menu.” 

1.  Press the 



 or 



 buttons to cycle through the menu until “Treble Menu” is displayed. 

2.  Press 



 or 



 to increase or decrease level. There are four levels available: low, medium, medium-

high, and high. 

3.  Press 



 or wait a few seconds to return to the dwell display. 

There are two ways to focus voice communications by suppressing calls from talk groups in the active 
profile.  

•  No Scan. By changing the Scanning Mode to “No Scan” only the selected talk group is scanned. 
•  Lock Out. By locking out selected talk groups, background noise or chatter can be eliminated and 

scanning resources can be focused on just those groups whose calls you wish to monitor.