Owner's Manual
Table Of Contents
- Introduction
- Getting Started
- Basic Operation
- Turning the Radio On and Off
- Adjusting the Volume
- Adjusting the Squelch
- Selecting Channels
- Transmitting with the Radio
- Bypassing the LO (1 W) Transmission Power Setting
- Scanning and Saving Channels
- Repeating the Last Received Communication
- Monitoring Multiple Channels
- Reprogramming the Second-Priority Channel
- Using 16/9 Mode
- Switching Between 1 W and 25 W Transmitting Modes
- Adjusting the Local/Distant Receiving Sensitivity
- Using the Intercom
- Using the Hailer
- Using the Foghorn
- Listening to NOAA Weather Broadcasts and Enabling Weather Alerts
- Automatic Transmitter Identification System
- Digital Selective Calling
- Advanced Operation
- Appendix
- Index

26 VHF 300 Series Owner’s Manual
Digital Selective Calling
Adding and Modifying Group Entries
Adding a Group
1. Press the DSC key.
2. Select GROUP > ADD ENTRY.
3. Enter the MMSI number.
4. Enter a name.
5. Select ACCEPT to save your changes. Select CANCEL to return to the previous screen
without saving the changes. Press the MENU key to return to the Home screen.
Editing a Group
1. Press the DSC key.
2. Select GROUP > EDIT ENTRY.
3. Change the characters in the MMSI eld or the Name eld.
4. Select ACCEPT to save your changes. Select CANCEL to return to the previous screen
without saving the changes. Press the MENU key to return to the Home screen.
Deleting a Group
1. Select the DSC key.
2. Select GROUP > DELETE.
3. Select YES to delete the entry. Select NO to quit the action and return to the previous
screen.
Conguring DSC Settings
Manually Entering Position Information
If you do not have a GPS device connected to your radio, manually enter your position and
time of entry so that this information will be transmitted with DSC calls. When you enter
the position and time manually, “MANUAL POS” is displayed on the screen.
Your radio has two alarms to indicate that you need to update your position data:
• When the position data you entered manually is over four hours old, the radio beeps and
displays “DATA IS OVER 4 HOURS OLD” on the screen.
• After 23.5 hours, manually-entered position data is considered invalid. The radio
displays “DATA IS INVALID” on the screen. The radio will not transmit position data
that is more than 23.5 hours old.
See page 35 for more information on GPS alarms.
When you manually enter your position with the time, the time remains xed at the value
you specify. The radio updates the time only if you connect a GPS device to the radio.










