Marine radios
Marine radios are essential safety equipment for communicating with other boats, marine rescue groups and to receive navigational warnings and weather updates. There are three types of marine radios:
- 27MHz are relatively cheap transceivers available for general use, however, they do not provide the coverage of a VHF radio.
- VHF emergency channels are monitored 24 hours a day. All commercial ships operating at sea carry, and monitor, VHF distress frequencies with the possibility of lending assistance. Operators must be licensed with the Australian Communications and Media Authority. VHF range can be significantly increased when using a repeater channel.
- HF radios have a greater communication range if travelling long distances from shore. Queensland HF services cover coastal waters to a minimum of 200 nautical miles seaward from sites located at Cairns (call sign: coast radio Cairns) and Gladstone (call sign: coast radio Gladstone). To increase communication efficiency, all HF equipment should be connected directly to the battery. Avoid patch panels and switch boxes if possible, as this will add to unwanted resistance and reduce performance. A good ground plate increases the efficiency of most communications equipment. Grounding straps between antenna tuners and ground plate should be made of copper pipe or copper sheet, approximately 50mm wide. The battery terminals and other connections on all radio equipment should be checked regularly and cleaned.
All crew should be competent in the operation of the marine radios onboard, know the frequencies dedicated to distress and safety and be able to properly format and transmit distress and safety messages. Information about licensing of radios and operators, can be found at the Australian Communications and Media Authority website at http://www.acma.gov.au/*.
Operating procedures
Standard radio procedures are used by boats of all nationalities.
Standard calls
When making a standard call to another boat or volunteer group state clearly:
- the boat/group you are calling - spoken three times
- this is - name of your boat - spoken three times
- message
- over
- await response.
Distress calls
The distress call 'mayday' may be used only if the boat is threatened by grave and imminent danger and immediate assistance is required. This distress call has absolute priority over all other transmissions and may only be transmitted on the authority of the skipper or the person responsible for the safety of your boat.
Call procedure:
- mayday mayday mayday
- this is - name and radio call sign of boat in distress - spoken three times
- mayday
- name and radio call sign of boat
- details of boat's position
- nature of distress and assistance required
- other information including number of people on board.
Urgency calls
The urgency call should be used when you cannot justify use of the distress call but have a very urgent message to transmit concerning the safety of your boat or the safety of a person. Once again, you may only make an urgency call on the authority of the skipper or person responsible for the safety of your boat.
Call procedure:
- pan pan pan pan pan pan
- hello all stations hello all stations hello all stations
- this is - name and radio call sign of boat - spoken three times
- details of the boat's position
- details of assistance required and other information.
Safety calls
The safety call should be used if you wish to broadcast an important navigational warning to other stations. For example, you have sighted a large floating object that could damage the hull of a boat.
A safety call is more likely to be made by a coast station or a limited coast station operated by a marine rescue association and may include important weather warnings such as severe thunderstorm, gale and cyclone warnings.
Call procedure:
- say-cure-e-tay say-cure-e-tay say-cure-e-tay
- hello all stations hello all stations hello all stations
- this is - name and radio call sign of boat or shore station - spoken three times
- details of the warning.
You may make the initial safety call to all stations on a distress frequency. However, you should change to a working frequency to make the broadcast of the safety message.
Volunteer marine rescue groups (monitoring HF, 27MHz and VHF) contact details.
Distress radio frequencies
MF/HF transceivers:
- Distress and calling 4125, 6215, 8291 KHz.
- Navigational warning 8176KHz.
VHF transceivers:
- Channel 16 with channel 67 as a supplementary.
27MHz transceivers:
- 27.88MHz (channel 88) with 27.86MHz as a supplementary.
Phonetic alphabet
A Alpha
B Bravo
C Charlie
D Delta
E Echo
F Foxtrot
G Golf
H Hotel
I India
J Juliet
K Kilo
L Lima
M Mike
N November
O Oscar
P Papa
Q Quebec
R Romeo
S Sierra
T Tango
U Uniform
V Victor
W Whisky
X X-Ray
Y Yankee
Z Zulu
*The content found by using this link is not created, controlled or approved by this department. No responsibility is taken for the consequences of viewing content on this site. This link will load into a new window.
Last updated 06 May 2008
Other languages