How it Works? (VHF Marine) ................................................20
Band Select ..........................................................................................................20
Normal Mode Operation .......................................................................................20
Normal mode with Triple Watch or Dual Watch ....................................................20
Scan Mode Operation ...........................................................................................21
Using the radio in Scan Mode ...............................................................................21
Scan mode with Triple Watch or Dual Watch ........................................................22
Weather Mode ......................................................................................................22
Using the radio in Weather Mode .........................................................................22
How it Works? (UHF CB) .......................................................23
Band Select ..........................................................................................................23
CTCSS ..................................................................................................................23
DCS ...................................................................................................................... 23
Operate in Duplex Mode .......................................................................................24
Normal Mode Operation ....................................................................................... 25
Normal mode with Dual Watch ............................................................................. 25
Normal mode with Triple Watch ............................................................................25
Scan Mode Operation ...........................................................................................26
Using the radio in Scan Mode ...............................................................................26
Scan mode with Triple Watch or Dual Watch ........................................................27
Busy Channel Lockout ..........................................................................................27
Vibrator ..................................................................................................................28
Maintenance and Troubleshooting .................................................... 29
Specifications ...................................................................................... 31
VHF Marine Channels and Frequencies (MHz) ................................. 33
US Channel Frequencies and Names ..................................................................33
Canadian Channel Frequencies and Names ........................................................35
International Channel Frequencies and Names ................................................... 37
UHF CB Channel Guidelines ................................................................................39
CTCSS Codeas and Frequencies ........................................................................ 40
DCS Codes Table ................................................................................................. 41
UHF CB Channel and Frequencies ......................................................................42
Regulations and Safety Warnings ..................................................... 44
Warranty ...............................................................................................45
5
UHF CB+VHF Marine Radio
UNIDEN MHS157
