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Lowrance - LVR-250 Installation and Operation Instructions
51
Special Notes on USA Channel Usage
1
. LOW POWER (1 W) only.
2
. Receive Only.
3
. LOW POWER (1 W) initially. Override to HIGH POWER by holding down H/L key before
transmitting. Used normally in bridge-to-bridge communications.
4
. Lightly shaded simplex channels 03A, 21A, 23A, 61A, 64A, 81A, 82A, and 83A cannot be
lawfully used in U.S. waters unless special authorization is obtained from the U.S. Coast
Guard. Not for use by the general public.
5
. The letter “A” illuminated by the channel number indicates the USA channel is simplex.
This same channel is always duplex when selecting International. There is no “A” refer-
ence for International channels. The letter “B” is only used for some Canadian “Receive
only” channels.
6
. Channel 70 is designated for use exclusively for Digital Selective Calling (DSC), such as
Distress, Safety, and Ship Calls. No voice communication is allowed on CH70.
This channel is only available on DSC enabled radios.
KEY: S = Simplex operating channel; D = Duplex operating channel.
67 156.375 156.375 S Commercial, bridge-to-bridge, 1W with
Power-up
Yes No BRIDGE COM
3
1W
68 156.425 156.425 S Boat Operations, Recreational Yes No SHIP - SHIP
69 156.475 156.475 S Boat Operations, Recreational Yes Yes PLEASURE
70 156.525 156.525 Digital Selective Calling - DSC ------ ------ DSC
6
71 156.575 156.575 S Boat Operations, Recreational Yes Yes PLEASURE
72 156.625 156.625 S Boat Operations, Recreational Yes No SHIP - SHIP
73 156.675 156.675 S Port Operations Yes Yes PORT OPS
74 156.725 156.725 S Port Operations Yes Yes PORT OPS
77 156.875 156.875 S Port Operations Yes Yes PORT OPS
1
1W only
78A 156.925 156.925 S Boat Operations, Recreational Yes No SHIP - SHIP
79A 156.975 156.975 S Commercial Yes Yes COMMERCIAL
80A 157.025 157.025 S Commercial Yes Yes COMMERCIAL
81A 157.075 157.075 S U.S. Government, Environmental Protec-
tion Agency Operations
Yes Yes UNAUTHORIZED
4
82A 157.125 157.125 S U.S. Government, Canadian Coast Guard Yes Yes UNAUTHORIZED
4
83A 157.175 157.175 S U.S. Government, Canadian Coast Guard Yes Yes UNAUTHORIZED
4
84 157.225 161.825 D Public Correspondence, Marine Operator No Yes TELEPHONE
85 157.275 161.875 D Public Correspondence, Marine Operator No Yes TELEPHONE
86 157.325 161.925 D Public Correspondence, Marine Operator No Yes TELEPHONE
87 157.375 157.375 S Port Operations No Yes PORT OPS
88 157.425 157.425 S Port Operations No Yes PORT OPS
88A 157.425 157.425 S Commercial, Inter-ship Only Yes No COMMERCIAL