6. SCANNING FUNCTIONS
6.1 Channel scanning
NEPTUNE 100 can automatically search for signals throughout the marine band by scanning,
or selecting the channels in rapid sequence. When a signal is detected, the scanning pauses
on that channel (RX displayed) and remains blocked until the signal ends. Before the scanning
automatically starts again, NEPTUNE 100 waits for a 3,4 seconds in case the user wants to
transmit.
You can transmit in any moment, even if the scanning is active. In this case, the transmission will
be done on the channel currently scanned; but if you transmit just after a signal is detected, the
radio will transmit on that channel.
After the transmission, the scanning is interrupted.
If the scanning detects an undesired channel, you can start scanning again by pushing STEP/
SCAN.
To activate the Scan function:
Hold down the STEP/SCAN button till scan blinks on the display; press MENU/SELECT to conrm
your selection. The scanning will start.
The scanning and the memory scanning cannot properly work if the squelch is not adjusted as
previously described.
To activate the Mem Scan function:
• keep pressed STEP/SCAN till scan blinks on the display;
• with the UP/DOWN keys select mem scan;
• conrm your selection by pushing MENU/SELECT.
Now the scanning of the stored channels starts.
To stop it, push STEP/SCAN and the radio will stop on the channel scanned in that moment.
• Reception: if NEPTUNE 100 detects a signal, the scanning interrupts and the display
indicates “RX”.
• Transmission: you can transmit in any moment, even if the scanning is active. In this case,
NEPTUNE 100 will transmit from the channel being scanned in that moment; but if the
transmission is done after a channel is picked up, the device will transmit from that channel
within 3 / 4 seconds. After the transmission, the scanning interrupts.
6.2 Dual Watch and Triple Watch
Dual Watch
Allows you to monitor two channels at the same time: the channel in use and channel 16 (emergency
channel).
To activate this function, push DW and the radio will start monitoring both channels.
To disable this function push DW again and the radio will return to the channel in use.
If you push PTT the scanning will stop and the radio will go to channel 16.
The Dual Watch and Triple Watch stop when a signal is picked up, giving you the possibility to
answer.
These functions cannot operate properly if the squelch is not adjusted.
