Present Frequency bands used by Ship
radiotelegraph stations for calling, working and distress traffic are:
|
Low Frequency : 90-160
kHz
Calling Frequency: 143 KHz (Mode A1 only)
152-158 KHz
Calling
& Distress 500 kHz
Calling when 500 occupied
512 kHz by distress |
High Frequency:
4-25 MHz
Calling, all ships in kHz
4180.2-4187.0 (in 0.4 kHz steps)
6270.3-6280.5 (in 0.6 kHz steps)
8360.4-8374.0 (in 0.8 kHz steps)
8364.0 (for safety of life only)
12540.6-12561.0 (in 1.2 kHz steps)
16720.8-16748.0 (in 1.6 kHz steps)
22228.0-22246.0 (in 2 kHz steps)
25071.0-25075.0 (in 2 kHz steps)
|
Medium
Frequency: 405-535 kHz
Radio Direction Finding (RDF) 410 kHz
Calling: 425, 444, 454, 468, 480 kHz
Calling & Distress 500 kHz
Calling when 500 occupied
512 kHz by distress
|
|
Working, high-traffic
ships, in kHz:
4172.5-4176.0
6258.75-6264
8342.0-8355.0
12505.5-12532.5
16662.0-16710.0
22189.0-22217.0 |
Working,
low-traffic ships, in kHz:
4188.5-4219.0
6282.7-6324.7
8377-8359.5
12565.5-12529.5
16754.0-16718.5
22250.5-22261.0
25091.0-25104.5 |
High
Frequency: 4-25
MHz
Calling, all ships in kHz
4180.2-4187.0 (in 0.4 kHz steps)
6270.3-6280.5 (in 0.6 kHz steps)
8360.4-8374.0 (in 0.8 kHz steps)
8364.0 (for safety of life only)
12540.6-12561.0 (in 1.2 kHz steps)
16720.8-16748.0 (in 1.6 kHz steps)
22228.0-22246.0 (in 2 kHz steps)
25071.0-25075.0 (in 2 kHz steps) |
Frequency bands in which
coastal stations communicating with ship radiotelegraph stations will be
assigned:
90-160 kHz band:
112.85-153 kHz
415-525 kHz band: 416-512 kHz
4-23 MHz band:
4238.0-4316.0 kHz
6351.0-6512.5 kHz
8502.0-8726.0 kHz
12745.5-13119.0 kHz
16933.2-17242.4 kHz
22407.0-22617.0 kHz
Radiotelephone Frequencies:
The 2-23 MHz or HF bands in which ship radiotelephone
stations may be assigned for calling, working and distress traffic are:
1619.0-2830.0 kHz (A3A, A3H, A3J)
2182.0
kHz (International Distress Frequency)
4069.2-4434.9 kHz SSB
5680 kHz SSB
6147.5-6512.9 kHz SSB
8201.2-8780.0 kHz SSB
12358.0-12435.4 kHz SSB
16474.0-16593.3 kHz SSB
The 2-23 MHz or HF bands in which coastal stations may be assigned
to communicate by SSB with ships are:
2009.0-2782.0 kHz
4071.0-4371.0 kHz
6147.5-6455.0 kHz
8207.0-8783.2 kHz
12379.0-13158.0 kHz
16488.0-17283 kHz
The 156-162 MHz or
VHF band is divided into 25 kHz channels in which narrowband F3 emissions are
used. Some representative channels are listed below:
|
Channel |
Frequency for
ship/Coastal station |
Type of
message |
|
16 |
156.8 MHz |
Distress, Safety, Calling |
|
6 |
156.3 MHz
|
Intership Safety |
|
7 |
156.35 MHz |
Commercial |
|
9 |
156.45 MHz |
Noncommercial |
|
12 |
156.6 MHz |
Port operations |
|
13 |
156.65 MHz |
Navigation
(continuous Listening watch when vessels are in heavy-traffic area) |
|
15 |
156.75 MHz |
(Coastal) Environmental |
|
24 |
157.2 MHz(ship)161.8 MHz(Coast) |
Public correspondence |
|
68 |
156.425 MHz |
Yachts
|
| |
162.55 & 162.4 MHz |
(Coastal) Weather
Broadcasts |
|
