Digital Select Calling (DSC)

Operation

Operating Your Radio

Receiving An All Ships Call

All Ships calls sent by stations within range of your radio will sound the distress alarm on your radio and switch your radio to Channel 16.

All Ships Call

When An All Ships Call Is Heard:

 

1. Press any button to turn Off the alarm and return to

Digital Select Calling (DSC)

Operation

Operating Your Radio

Sending An Individual Call

The DSC Individual call feature allows you to notify one (1), and only one (1), station that you want to communicate with that station. It does not alert all other stations within range that you will be sending a message as a voice call on Channel 16 or Channel 9 would.

 

Standby mode.

2.

Read and write down the MMSI of the vessel sending

 

the call as well as the date and time of the call in case

 

you will want to respond.

3.

Listen to the voice message sent on the channel your

 

radio was switched to by the incoming all ships call.

 

Some All Ships calls have channel information.

Sending A Geographical Call

Your radio cannot send Geographical calls. Only large ships and shore stations with specially equipped radios can send these calls.

Receiving A Geographical Call

Geographical calls are sent by specially equipped radios to all stations in a particular geographical area to alert only those stations of the call and not stations in unaffected areas. If you are in an area to which a Geographical call is made, it will sound the geographical alarm on your radio and switch your radio to the channel chosen by the sending station.

Geographical Call

When A Geographical Call Is Heard:

 

1.Press any button to turn Off the alarm.

2.Read and write down the MMSI of the vessel sending the call as well as the date and time of the call in case you will want to respond.

3.Listen to the voice message sent on the channel your radio was switched to by the incoming geographical call.

4.Press one (1) of the following three (3) buttons to switch from geographical call receive to Standby mode: Call/Set button, Channel 16/9 button, or Talk button.

Standby Mode

Individual

Select Name

Individual Waiting

Send/Exit

To Send An Individual Call:

1.In Standby mode, select a channel on which you want to communicate.

2.Press the Call/Set button to enter the Call Send menu.

3.Use the Up/Down buttons to scroll to INDIV (Individual).

4.Press the Call/Set button to move to the individual directory.

5.Use the Up/Down buttons to select the name you want to call from the directory.

6.Press the Call/Set button to send the message or return to Standby mode if EXIT was chosen.

If the radio you are calling sends back an automatic DSC response of “able to comply,” the individual alarm will sound. Wait for a voice message from the called station.

If the called radio does not send an “able to comply” response, your radio will wait eight (8) seconds and resend the message.

If an “unable to comply” response or no reply is received, your radio will go to the Unavailable menu.

At the Unavailable menu, you can choose SEND or EXIT with the Up/Down buttons. If you choose SEND, your radio will restart the individual call. If you choose EXIT you will be returned to the individual location on the Call Send menu.

 

 

 

 

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Nothing Comes Close to a Cobra® 51

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Cobra Electronics MR F75-D Receiving An All Ships Call, Sending An Individual Call, Sending a Geographical Call

MR F75-D specifications

Cobra Electronics has long been a name associated with reliable communication solutions, and the MR F75-D is no exception. This high-performance marine VHF radio is designed specifically for boaters, offering a blend of essential features, advanced technologies, and user-friendly characteristics that make it an excellent choice for both recreational and commercial marine applications.

One of the standout features of the MR F75-D is its Class D DSC (Digital Selective Calling) capability, which allows users to send distress calls and communicate with other vessels or coast guard stations at the push of a button. This increases safety on the water, as it provides an automated means to alert others in case of emergencies.

The radio operates seamlessly on the vital marine channels, ensuring that users have access to all the necessary frequencies for navigation and communication. With an impressive 25 watts of transmitting power, the MR F75-D provides extended range, ensuring that calls can be made even in challenging conditions.

The Cobra MR F75-D boasts an ergonomic design featuring a solid weather-resistant construction to withstand the harsh marine environment. Its large, easy-to-read backlit LCD display enhances readability in bright sunlight or low-light conditions, making it accessible under various circumstances.

Moreover, the radio includes a built-in NOAA weather radio with alerts. This feature keeps users informed about local weather conditions and forecasts, enabling them to make better decisions while out at sea. The option to scan channels and save favorites makes it easy to navigate through crowded frequencies to find the right communication line.

The MR F75-D is equipped with Dual Watch and Tri-Watch functions, allowing users to monitor two or three channels simultaneously. This increases the chances of receiving essential messages while on the water, providing greater peace of mind.

With a compact design, the MR F75-D can fit easily on most boats, while the intuitive controls enhance usability. The radio also supports external GPS connection, offering even better situational awareness.

In conclusion, the Cobra Electronics MR F75-D is a versatile, durable, and feature-rich marine VHF radio. With its DSC capabilities, NOAA weather notifications, and robust build, it proves to be an invaluable tool for safe and efficient marine communication, making it a top choice for any boating enthusiast.