USD$ 149.95

The Cobra MR F55 is a full function DSC-capable VHF radio. The selectable 1 or 25 Watt output is perfect for short or long-range communication. Its compact design and included flush and bracket mounting kits make it great for any installation. This unit has features usually reserved for more costly VHF radio units including Dual Watch, an adjustable backlight, and function keys on the mic.It also includes all of the core features of Cobras fixed mount radios like; Noise canceling microphone, NOAA Weather Radio, Weather Alert, JIS7 Submersible, Instant channel 16/9, Scan, DSC call log, External speaker jack, Illuminated LCD display, Signal strength meter, GPS input capability, etc.Compliant with the latest FCC specifications for Class-D VHF Radios.

  • Class D DSC (Digital Selective Calling) - Allows you to send a distress signal at the touch of a button or exchange position information with other boats or stations.
  • Submersible - Designed to JIS7 standards.
  • Noise-Cancelling Microphone - Blocks background noise for clearer conversations.
  • All NOAA Weather Channels - Instant access to national All Hazards and weather information, 24 hours a day.
  • Dual Watch - Monitors two channels at once, channel 16 and one user-selected channel.
2.42 LBS (1,100.00 g)
6.25" (159.00 mm)
2.25" (57.00 mm)
7.13" (180.00 mm)

Hi.I have purchased a Cobra Marine radio Model MR F55 EU...I tried to connect it to my 12volt car battery but it kept blowing the fuse.I saw that it says 250 volt, 10 A on the fuse holder.Is this a 12 volt unit?

Asked by: franna
Yes, the radio takes an input of 12V to 14VDC, 10A (Negative ground). The 250V is the maximum voltage rating for that fuse. Please make sure you are connecting the cables to a known good 12V battery, carefully observing proper polarity. If you are in fact connecting it properly and it continues blowing the fuse, most likely there is internal damage. You may exchange it at the place of purchase. To see a list of Cobra International Distributors visit: Thank you for choosing Cobra!
Answered by: Jorge
Date published: 2015-04-08

Hi I have this radio installed but when I push the talk button screen loses energy and looks like its off, until i release that button turns on again  why this happens? thanks in advance 

Asked by: MarcoTV
That could be caused by a few reasons, please verify the following: 1. (Weak power source) Try it on Hi and Low power to see if it happens on both settings. This radio has a 10A inline fuse. 2. (Antenna cable too short or touching ground) Make sure the antenna cable is not pinched anywhere and the antenna is not touching ground. You could test it by disconnecting the antenna cable from the radio and briefly pressing the microphone to see if the screen still goes blank. If not, the radio is good. Note: The recommended antenna cable length is 18 feet. Any excess cable can be ran back and forward or coiled in BIG loops, at least 12 inches in diameter. To see other frequently asked questions click here: Should you have additional questions, please contact our Customer Care Group at 773 889 3087. Thank you for choosing Cobra!
Answered by: Jorge
Date published: 2015-02-03

Had this radio now for 3 months and both the volume and squelch buttons have become very tacky--No solvents were used to clean the radio--is there replacement knobs available--is it normal for the knobs to become tacky within 3 months???

Asked by: ZS1SSM
I would recommend contacting our International distributor closest to you from the list at the following link: You may also order Cobra replacement parts and accessories by calling our Customer Care Group at 773 889 3087. Thank you for choosing Cobra!
Answered by: Jorge
Date published: 2014-12-02

Can I plug this in to my cigarette lighter so I do not have to hook it straight to the battery?

Asked by: Big mike
Yes, this unit could be connected to the 12V accessory outlet.
Answered by: Jorge
Date published: 2014-09-02

Hi, I have this radio on my sailing boat. I am trying to connect an external NMEA GPS stream. I do not have an original Cobra GPS input wire, but made my own with 2.5mm jack plug. Please can you confirm the connections required to make this work?

Asked by: lampsh
2.5mm Jack configuration = Tip (+). Shaft (-) Connecting a Non-Cobra GPS Device to the MR F45B-D / 55B-D / 75B-D This can be tricky because different manufacturers use different wiring schemes. Therefore we can only provide general recommendations. Your Cobra radio comes with a cable for connecting a GPS. One end of the cable has a connector for plugging into the back of the radio. The other end has bare wires for connecting to a GPS. The Cobra radio requires an NMEA 0183 signal from the GPS device. If your GPS does not have a cable, then you must purchase a cable from the GPS manufacturer. You will also need wiring information for the cable (what each wire is for). Please contact the GPS manufacturer. Generally here is how to connect: 1. Connect the DATA OUT (+) wire from the GPS to the RED wire on the Cobra marine radio. The DATA OUT (+) wire might be labeled NMEA OUT (+), or NMEA TX (+). 2. Connect the DATA OUT (-) wire from the GPS to the BLACK wire on the Cobra marine radio. The DATA OUT (-) wire might be labeled NMEA OUT (-) or NMEA TX (-). If you DO NOT see such a wire from your GPS device, then just connect the BLACK wire from GPS to the Black wire on the Cobra. Let the GPS acquire satellites and check whether you can see your latitude and longitude coordinates on the display of the marine radio. If you see the coordinates then you are done. If you do not see the coordinates, then proceed with step 3. 3. Configure the GPS menu options as follows: * Check the manual for your GPS and see if it is necessary to enable the NMEA output. * If the output sentence is selectable, please choose RMC. * Make sure that the NMEA output is configured to send standard NMEA sentences (not some kind of proprietary format). * If the Baud Rate is adjustable, set it to 4800. When connected properly you will see GPS coordinates on the display of the marine radio. If you do not, then try switching the wires around (you will not hurt anything by doing so).
Answered by: Jorge
Date published: 2014-08-26

MR 55EU+ Bought 4 of these 3 years ago. 2 failed in the yr 1 (repl under warranty) and 2 have since failed (all now out of warranty). All faults are failure to transmit - sometimes microphone and sometimes not. Aerials replaced. Now time to invest again

Asked by: Brian4370
I am sorry to hear you are having trouble with your Cobra products, please contact our international distributors closest to you from the following list and they will be happy to assist with your troubles. Marathon Leisure Teal Building, Northney Marina Hayling Island Hampshire PO11 0NH United Kingdom Phone: 0044 2392 637711 Email: Website: Countries Distributed: United Kingdom Products Carried: Marine Pama & Co. Ltd Pama House, Waybourne Drive, Stockport Road East Bredbury Stockport SK6 2AA United Kingdom Phone: 0044 8707 262626 Email: Website: Countries Distributed: United Kingdom, Ireland Products Carried: CB Radios, Walkie Talkies / Two-Way Radios Visit the following link to see other Cobra International Distributors
Answered by: Jorge
Date published: 2014-08-08

can you send and receive on channel m1 and m2 with this radio

Asked by: cecil1006
Please refer to page 58 of the owner's manual located at this link to see a description of VHF Marine Channel Assignments.
Answered by: Jorge
Date published: 2014-08-04
  • 2015-05-04T07:43CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_7
  • loc_en_US, sid_MRF55BD, PRD, sort_recentAnswersFirst
  • clientName_cobra

Related Products


Under-dash Bracket for MR F55/75, Black


GPS Interface Cable for MR F45/55/75 models

CM 200-002

Microphone Bracket for the MR F45/F55/F75, Black

CM 300-004

5 Foot Fiberglass VHF Antenna