To Next PageTo Next PageWhy does my Cobra MR F77W GPS Transceiver only transmit at 1 watt, but not 5 watts?
If your Cobra Transceiver is only transmitting at one (1) watt instead of five (5) watts, the selected channel might be limited to one (1) watt. To fix this, switch to another channel.
Why can't I answer calls on my Cobra MR F77W GPS Transceiver?
If you cannot answer calls, it might be because you are out of range of the other station or the signal is being blocked by terrain. To resolve this, switch to high power (25 watts), move closer, or move until you have a 'line-of-sight' to the other station.
Why is there no sound from the speaker on my Cobra Transceiver?
If you cannot hear any sound from the speaker, the volume level might be too low, or the squelch level is set too deep. Try readjusting both the volume and squelch settings.
What to do if my Cobra Transceiver does not transmit?
If your Cobra Transceiver does not transmit, it could be that the selected channel is limited to receive only. Try switching to another channel.
How to fix no display on LCD when Cobra MR F77W GPS is turned on?
If there is no display on the LCD when your Cobra Transceiver is turned on, this may be due to an improper power connection. Ensure that all power connections are properly connected and secure.
General| Brand | Cobra |
|---|---|
| Model | MR F77W GPS |
| Category | Transceiver |
| Language | English |
Expresses gratitude for purchase and provides contact information for customer support.
Describes the primary functions and capabilities of the VHF radio for marine communication.
Detailed contact information and support services offered by Cobra Electronics.
Details the GPS functionality for displaying coordinates and sending location with DSC calls.
Explains the feature for replaying the last 20 seconds of incoming audio transmissions.
Describes the capabilities of Digital Selective Calling for establishing radio calls.
Specifies the submersible rating, meeting IPX8/JIS8 standards.
General precautions and warnings for safe installation and operation of the radio.
Information regarding RF exposure hazards and safe operating practices.
Explains radio compliance with FCC rules and licensing requirements.
Details how to obtain and use an MMSI number for DSC operations.
Highlights the importance of VHF radio for summoning assistance in emergencies.
Explains the meaning and usage of MAYDAY, PAN, and SECURITE signals.
Provides a step-by-step guide for making a verbal distress call.
Details the process for sending distress signals using Digital Selective Calling.
Lists all the items provided in the radio's packaging.
Instructions for physically installing the radio and connecting it to power.
Guidelines for selecting, installing, and connecting the marine antenna.
Initial steps and basic operations for using the VHF radio.
Explanation on how to adjust squelch to filter unwanted noise.
Instructions for adjusting the radio's transmit power output.
Accessing and navigating the radio's main settings menu.
Instructions for adjusting the LCD screen's backlight brightness.
Procedures for setting the clock and time zone offset.
Configuration options for the internal and external GPS receiver.
How to perform diagnostic tests on the radio's functions.
Guide for entering the vessel's unique MMSI number for DSC.
Storing and managing individual contacts for DSC calls.
Instructions for setting up and entering group MMSI numbers.
Setting automatic or manual responses to position requests.
Procedure for manually inputting time, latitude, and longitude.
Scanning three key channels simultaneously for incoming transmissions.
Scanning programmed memory channels for activity.
Using the radio's PA mode for external voice communication.
Replaying missed transmissions and recording call details.
Detailed procedures for initiating distress signals via DSC.
How the radio handles and alerts the user to incoming distress calls.
Broadcasting messages to all stations within radio range.
Initiating a direct communication call to a single station.
Requesting location data from another station with a GPS.
Managing and reviewing received call and distress logs.
Performing diagnostic calls to verify DSC functionality.
Guidance for diagnosing and resolving common radio operational issues.
Overall technical specifications for the VHF radio.
Technical specifications related to the radio receiver.
Technical specifications related to the radio transmitter.
Details on channel usage, frequencies, and power limits by region.
List of NOAA and Canadian weather channels with frequencies.
Information for setting the correct local time based on time zones.
Details of the limited 3-year warranty for the CobraMarine VHF radio.
Information on obtaining product support and factory service.
