Raymarine RAY91 VHF Installation And Operation Instruction Manual page 68

Symbol
68
Name
Fog horn
Transmit
Receive
Weather
Power supply voltage too low
Description
Indicates that the radio is in Fog
horn mode.
Indicates the radio is currently
transmitting (e.g. the PTT button is
being pressed.)
Indicates the radio is currently
receiving a transmission
Indicates that the weather alerts
mode is activated.
Indicates the power supply to
the radio is below the specified
operating voltage.