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Coast Guard marine channel listing (with frequencies) US FCC marine channel listing (by function) UK MCA advice on use of VHF at sea, including collision avoidance, effective ranges, and International channel usage * Canadian VHF Bands in the Maritime Service; VHF marine band plan in Turkey (Türkiye'deki VHF Deniz Telsiz Frekans Kanal Listesi)
The AN/PRC-160 began production in 2017 as the HF manpack component to the Harris Falcon III ecosystem of tactical radios. [4] Several DoD contracts have since been signed by branches of the US military, including a nearly $8 million US Air Force contract for 264 radios. [5]
A Sailor VHF DSC unit. Digital selective calling (DSC) is a standard for transmitting predefined digital messages via the medium-frequency (MF), high-frequency (HF) and very-high-frequency (VHF) maritime radio systems. It is a core part of the Global Maritime Distress Safety System (GMDSS). [1]
Very high frequency (VHF) is the ITU designation [1] [2] [3] for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter. Frequencies immediately below VHF are denoted high frequency (HF), and the next higher frequencies are known as ultra high ...
HF's position in the electromagnetic spectrum.. High frequency (HF) is the ITU designation [1] [2] for the band of radio waves with frequency between 3 and 30 megahertz (MHz). It is also known as the decameter band or decameter wave as its wavelengths range from one to ten decameters (ten to one hundred meters).
An amateur radio installation on a 28' yacht, including 100W HF transceiver with microphone, manual antenna tuner, and morse key. Maritime mobile amateur radio is an amateur radio transmission license that allows maritime operators to install and use radio while they operating at sea.
AIS uses the high side of the duplex from two VHF radio "channels" (87B) and (88B) Channel A 161.975 MHz (87B) Channel B 162.025 MHz (88B) The simplex channels 87A and 88A use a lower frequency so they are not affected by this allocation and can still be used as designated for the maritime mobile frequency plan.
The SINCGARS operator must change to the cue frequency to communicate with the outside radio system. The network can be set to a manual frequency for initial network activation. The manual frequency provides a common frequency for all members of the network to verify that the equipment is operational.