33• NoneNo function has been programmed on the key.• Operator Selectable ToneRefer to “QUIET TALk (QT)/ DIgITAL QUIET TALk (DQT)” on page 28 for details.• OST DownPress this key to decrease the Operator Selectable Tone number of yourselected channel.• OST UpPress this key to increase the Operator Selectable Tone number of yourselected channel.• PlaybackRefer to “vgS-1 OPTIONAL vOICE gUIDE & STORAgE UNIT” on page 37.• Public AddressPress this key to toggle the Public Address function ON and OFF. “PUBLICADRS” appears on the display when Public Address is activated. To use thePublic Address system, your dealer must first install an external speaker. Thisfunction causes all audio input via the microphone to be amplified and outputfrom the external speaker.• Regroup RequestPress this key to send a request to the dispatcher to join the talkgroup set upby the dispatcher. While using the dynamic group, “Dyn. Regroup” appears onthe display.• ScanRefer to “SCAN” on page 5.• Scan DeleteRefer to “TEMPORARY ChANNEL LOCkOUT” on page 5.• Scan ProgramRefer to “SCAN PROgRAMMINg” on page 7.• Scrambler/ EncryptionRefer to “SCRAMBLER (FM)/ ENCRYPTION (P25)” on page 26.• Scrambler/ Encryption CodeRefer to “SCRAMBLER (FM)/ ENCRYPTION (P25)” on page 26.• SelcallRefer to “FleetSync: ALPHANUMERIC 2-WAY PAGING FUNCTION” onpage 9.• Selcall + StatusRefer to “FleetSync: ALPHANUMERIC 2-WAY PAGING FUNCTION” onpage 9.• Send the GPS dataPress this key when the GPS unit has been installed to send your positioningdata to the base station.