Cobra Electronics MRF45 owner manual World City Time Zones, Noaa Weather Channels Alert

	World City Time Zones
VHF Marine Radio Protocols
World City Time Zones			•
LongitudinalZone		Offset	City
E172.50 to W172.50		-12	IDLW(InternationalDate Line West)
W172.50 to W157.50		-11	Nome
W157.50 to W142.50		-10	Honolulu
W142.50 to W127.50		-9	YukonSTD
W127.50 to W112.50		-8	Los Angeles
W112.50 to W097.50		-7	Denver
W097.50 to W082.50		-6	Chicago
W082.50 to W067.50		-5	New York
W067.50 to W052.50		-4	Caracas
W052.50 to W037.50		-3	Rio de Janeiro
W037.50 to W022.50		-2	Fernandode Noronha
W022.50 to W007.50		-1	Azores Islands
W007.50 to E007.50 GMT		+0	London
E007.50 to E022.50		+1	Rome
E022.50 to E037.50		+2	Cairo
E037.50 to E052.50		+3	Moscow
E052.50 to E067.50		+4	Abu Dhabi
E067.50 to E082.50		+5	Maldives
E082.50 to E097.50		+6	Dhuburi
E097.50 to E112.50		+7	Bangkok
E112.50 to E127.50		+8	Hong Kong
E127.50 to E142.50		+9	Tokyo
E142.50 to E157.50		+10	Sydney
E157.50 to E172.50		+11	SolomonIslands
E172.50 to W172.50		+12	Auckland

NOAA Weather Channels

And Alert

VHF Marine Radio Protocols

NOAA Weather Channels And Alert

•

Monitoring the weather will probably be a frequent use of your radio. The National Oceanic and Atmospheric Administration (NOAA) provides continuous, around-the- clock broadcasts of the latest weather information. Taped weather messages run every four (4) to six (6) minutes and are revised every two (2) or three (3) hours, or as needed. The Coast Guard also announces weather and other safety warnings on Channel 16 and DSC Channel 70. Smart boaters keep an eye on safety and an ear to the radio — and never let the weather catch them unaware.

NOAA Emergency Weather Alert

In the event of a major storm or other weather condition requiring vessels at sea or on other bodies of water to be notified, NOAA broadcasts a 1050 Hz tone that receivers such as your CobraMarine VHF radio can detect and warn you of a weather alert condition. When the Weather Alert mode on your radio is On, this signal will produce the weather alert alarm tone from the speaker and a “weather alert” message on the LCD to signal that a weather alert is being broadcast.

The radio will automatically switch to Weather Radio mode.

Test

To test this system, NOAA broadcasts the 1050 Hz signal every Wednesdaysometime between 11 a.m. and 1 p.m. in each local time zone. Any receiver that can detect the weather alert tone may use this feature to verify that this feature is functioning properly.

Weather Frequency/Channel

Channel	RX Frequency MHz	Weather Channel
1	162.550	NOAA
2	162.400	NOAA
3	162.475	NOAA
4	162.425	NOAA
5	162.450	NOAA
6	162.500	NOAA
7	162.525	NOAA
8	161.650	Canadian
9	161.775	Canadian
10	163.275	NOAA*

*This frequency is no longer in use.

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