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What are the batter requirements for portable VHF transceivers?
The primary battery should have sufficient capacity to ensure 8 h operation at its highest rated power with a duty cycle of 1:9. This duty cycle is defined as 6 s transmission, 6 s reception above squelch opening level and 48 s reception below squelch opening level.
How long can a portable survival craft radio be expected to work?
This is possible due to a unique concept with the PRIMARY EMERGENCY BATTERY stored for the emergency and a SECOND RECHARGEABLE BATTERY for daily use of your new portable transceiver. This concept secures at least 8 hours operation time even at minus 200c at sea.
What is the primary battery of portable GMDSS radio?
To comply with the requirements of GMDSS survival craft radio, the primary battery pack, BP-234, is required. BP-234 LITHIUM BATTERY PACK 9.0V/3300mAh primary battery pack for GMDSS survival craft radio.
How many portable emergency handheld VHF radios are required in each lifeboat CFR?
§ 80.1095 Survival craft equipment. (a) At least three two-way VHF radiotelephone apparatus must be provided on every passenger ship and on every cargo ship of 500 tons gross tonnage and upwards.
How do you hail in VHF?
Basics for radio etiquette and protocol include: Reserve calling on channel 16 for hailing and distress only. If you need to hail a vessel, name the vessel you are calling two or three times, state the name of your vessel and wait. Once the vessel responds, switch immediately to an authorized working channel.
What should be marked on the portable GMDSS radio?
The equipment should be clearly marked with the manufacturer’s identity, type or model identification, serial number, brief operating instructions and the expiry date for the primary batteries used.
How far will a VHF radio transmit?
A typical VHF station operates at about 100,000 watts and has a coverage radius range of about 60 miles.