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General| Model | MRF55 |
|---|---|
| GPS | No |
| NOAA Weather Channels | Yes |
| Instant Channel 16/9 | Yes |
| Voltage Range | 13.8 VDC |
| Type | Marine Radio |
| Frequency Range | 156.025-163.275 MHz |
| Power Output | 25 Watts |
| Display | LCD |
Expresses gratitude for purchasing the VHF radio and highlights its benefits.
Details contact methods for technical and general support in the US and abroad.
Identifies and illustrates the main physical controls and connection ports on the radio unit.
Describes the microphone controls and lists key product features of the VHF radio.
Explains the meaning of WARNING and CAUTION statements for safe operation.
Provides information on RF exposure compliance and relevant safety guidelines.
Offers advice on VHF radio usage, alternatives for long-range communication, and cellular phone limitations.
Outlines FCC regulations, station licensing requirements, and call sign usage for marine radios.
Details user obligations, regulatory compliance, and prohibited operating locations for VHF radios.
Explains how to make voice calls to other vessels and shore stations, including channel selection and etiquette.
Introduces DSC as a system for establishing radio calls and its role in distress and safety communication.
Explains the MMSI number's function in DSC and how to obtain it.
Guides on making and receiving telephone calls via public coast stations, including privacy considerations.
Covers the use of MAYDAY, PAN, and SECURITE signals and procedures for distress calls.
Provides a step-by-step guide for making a voice distress call and the required information to convey.
Explains how to send an automated DSC distress call using GPS position data.
Outlines channel usage categories like distress, calling, intership safety, and commercial operations.
Details channels for public correspondence, port operations, navigation, DSC, and weather.
Lists VHF channels with their corresponding map usage, frequencies, and power limits.
Continues the detailed listing of VHF channels, their uses, frequencies, and power limits.
Provides remaining channel assignments, including non-commercial, intership, and port operations uses.
Lists final channel assignments for public correspondence, non-commercial, and commercial uses.
Lists longitudinal zones and their corresponding city offsets from GMT for time synchronization.
Explains NOAA broadcasts, weather alert tones, and how to receive weather information.
Lists all items found in the CobraMarine VHF radio package for the user.
Provides initial guidance on choosing a location and mounting the radio unit on a vessel.
Details how to install the microphone bracket securely on a suitable surface.
Explains the process of flush mounting the transceiver unit into a flat surface.
Guides on correctly connecting the radio to the vessel's 13.8-volt DC power source.
Discusses the need for an external antenna and advice on selecting quality components.
Covers safety limits and procedures to avoid excessive RF energy exposure during transmission.
Details how to connect the microphone and an optional external speaker to the transceiver.
Explains how to connect a GPS device for position data and DSC message enhancement.
Introduces the user to the radio's controls and indicators via a foldout reference.
Describes the various tones and alarms generated by the radio for different events.
Guides on adjusting speaker volume and using the squelch control to filter noise.
Explains how the radio operates in standby, receive, and weather radio modes.
Details how to adjust the LCD backlight brightness or turn it off for visibility.
Guides on setting the LCD contrast for optimal readability in various lighting conditions.
Explains how to enable or disable the confirmation tone for button presses.
Guides on setting the local time zone offset for accurate time display and DSC operations.
Instructs on choosing appropriate channels for voice messages based on type and area.
Explains how to select transmit power (1W/25W) and send voice messages.
Details how to listen to NOAA weather channels and set up weather alerts.
Describes how to quickly switch between Channels 16 and 9 for calling purposes.
Explains how to monitor two channels simultaneously, including entering and exiting the mode.
Details how to scan through all selected channels and manage transmissions during a scan.
Introduces DSC setup and its benefits, emphasizing the need for MMSI entry.
Provides step-by-step instructions for entering the unique MMSI number into the radio.
Explains procedures for transferring the radio to a different vessel and managing its MMSI.
Guides on enabling or disabling the DSC scanning feature for received alerts.
Details how to enter and use Group MMSI numbers for group communications.
Explains how to configure automatic or manual replies to position requests.
Guides on entering and storing names and MMSI numbers for quick DSC calls.
Provides step-by-step instructions for initiating an automatic or manual DSC distress call.
Explains how the radio handles received DSC calls, alarms, and switching to Channel 16.
Guides on how to respond to received DSC distress calls and relay information.
Details how to send urgent, safety, or routine messages to all vessels within range.
Explains how the radio handles All Ships and Geographical calls, including alarms and channel switching.
Guides on initiating a DSC call to a specific vessel using the individual directory.
Describes how the radio receives and alerts the user to individual and group DSC calls.
Explains how to request the position of another station via DSC.
Details how to interpret and respond to received position data, no data, or no reply messages.
Guides on resending a position request or exiting the mode after a response.
Explains how the radio receives and displays position information sent by other stations.
Guides on initiating a DSC message to send your vessel's position to another station.
Provides instructions for cleaning and caring for the VHF radio to ensure longevity.
Lists common radio issues, their possible causes, and suggested solutions.
Lists the radio's technical specifications, including frequency range, power, and dimensions.
Details the warranty terms, coverage, and exclusions for products purchased in the USA.
Explains how to obtain factory service, return a product, and contact customer support.
Provides a form to order optional accessories directly from Cobra.
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