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TABLE OF CONTENTS
VHF255S Introduction 6
How VHF Radio Works 6
Features Overview 7
Maritime Mobile Service Identity (MMSI) 9
VHF255S Controls - Radio Base Station Front 11
VHF255S Controls - Radio Base Station Rear 13
VHF255S Controls - Microphone Handset 14
What's On the Display 15
Installation Overview 17
Parts Supplied 17
Connections Overview 20
1. Decide Where to Install the Radio Base Station. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2. Install the Radio Base Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
3. Attach the Antenna Cable to the Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4. Install the Microphone Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5. Attach a GPS Receiver (Optional-Purchase) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Using Your VHF255S 28
Before You Use Your Radio: FCC Radio Frequency (RF) Compliance Requirements . . . . 29
Before You Use Your Radio: FCC Licensing Requirements. . . . . . . . . . . . . . . . . . . . . . . . . 29
Before You Use Your Radio: FCC Privacy and Priority Channel Requirements . . . . . . . . . 30
1. Turning the Power On/Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2. Adjusting Squelch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3. Selecting a Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4. Selecting High/Low Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5. Transmitting and Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6. Selecting the U.S./International/Canadian Bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7. Selecting a Weather Channel and Turning On Weather Alert . . . . . . . . . . . . . . . . . . . 33
8. Accessing the 16/9 Priority Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9. Adding/Deleting Channels to/from Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34