Simrad - HH33 Installation and Operation Instructions
68
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 US waters unless special authorization is obtained from the US
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”
reference 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.
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
161.975
D
Port Operations
No
Yes
TELEPHONE
88
157.425
162.025
D
Port Operations
No
Yes
TELEPHONE
88A 157.425
157.425
S
Commercial, Inter-ship Only
Yes
No
COMMERCIAL
