41
English
PASSPORT 
TRUNKING
ROAM LOCK
Because of the RSSI (Received Signal 
Strength Indication) feature, the 
CDM1550•LS+ radio automatically roams to a 
different site when the signal falls below the 
RSSI level programmed in your radio by your 
dealer. In some instances (inside a building or 
in fringe areas), you may want to prevent your 
radio from roaming. This is possible by 
enabling the Roam (Site) Lock function.
Note: If you are currently on an affiliated site and
wish to lock onto your home site, you need
to first press the preprogrammed Home Site
Revert button prior to pressing the prepro-
grammed Roam Lock button. 
To Activate Roam Lock
To Deactivate Roam Lock
To deactivate Roam Lock, press the 
preprogrammable Roam Lock button again or 
turn off your radio or switch zones/talkgroups. 
Your radio automatically re-registers onto the 
PassPort system.
Note: Once deactivated, the radio follows the 
roaming criteria programmed in the radio.
Notes:
• The radio must currently be registered on 
an affiliated site.
• If the radio cannot register to its Home 
Site, for whatever reason, the radio reverts 
back to its current affiliated site.
1
Press the preprogrammed Roam Lock button 
(see page 23).
2 You see.
Alternating with:
at one second inter-
vals.
• A good key chirp is heard.
Note: A radio can be roam-locked only 
when it is registered to a site. 
7/.*53$/,$6
5RDP/RFNHG