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Cobra MT645 PMR Quad Pack

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Quoting product code: N43DD


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About this product


  • Quad pack of Cobra MT645 two-way radios
  • Keep in touch at festivals or at work
  • Get in contact up to 8km away

Product overview

• Quad pack of Cobra MT645 two-way radios
• Keep in touch at festivals or at work
• Get in contact up to 8km away
• 968 privacy combinations – 8 channels with 121 privacy codes per channel
• Battery powered radios with charging cable (USB power socket not included) – three AA batteries required per unit (12 rechargeable NiMH batteries included)
• No licence required

Where would I use these PMRs?
Whether you’re at a festival or hiking in the country, keep in touch with these Cobra MT645 two-way radios. These PMR 446 radios use the 446 MHz frequency band for communication between the four units. With up to 8km range in open conditions, these radios are powerful units with no need for a licence or call plan. Backlit LED screens let you see what you’re doing in the dark. They even come with a clip to secure the radios to your belt. For more covert conversations or just to cut down the ambient noise, the MT645 units can be attached to a compatible headset.

Will these radios be effective in closed conditions?
These two-way radios reach their maximum 8km range in open conditions. Even with obstacles between the units, they will provide effective communication. Cobra estimates that in ideal conditions, the MT645 will transmit up to approximately km in a hilly location and up to approximately km in a built-up city. A great radio for festivals, shops or walking with.

How many frequencies do these two-way radios have?

Never struggle for a clear frequency – each unit has 8 channels which have 121 privacy codes for a total of 968 privacy combinations. Comes with voice activated transmission (VOX) for hands free transmissions. Roger beeps can used to give a bleep after you’ve finished talking to let others know its fine to talk and can be switched or off. Using key lock, you won’t need to worry about accidentally changing your channel and missing a message.

How do I charge my radios?
The radios have a microUSB charging socket and come with a lead to charge the radios from a USB socket (socket not included). At a festival with no access to mains power? No worries, just replace the batteries with alkaline AA batteries(not included) and keep going. You can even charge the handsets from a USB car accessory socket adapter (not included Order Code N78EA)as well as mains USB socket adapters (not included Order Code N22NC). The handset includes a battery level indicator so you should always know how much battery you have left. The MT645 has a power saving mode so it can run for up to 8 hours on a full charge and up to 24 hours on standby.

These two-way radios are compatible with most PMR 446 units with the same channel and privacy combinations.

Compatible accessories:
Cobra Easy-Ear Microphone and Earpiece with PTT <A63GY
Cobra Covert Hook-over Earpiece and Microphone <N68KB
Cobra Covert In-ear Bud Earpiece and Microphone <N67KB
Cobra PMR Open Face Helmet Headset Kit <N69KB
Cobra PMR Full Face Helmet Headset Kit <N70KB
Cobra PMR Radio Speaker Microphone <N70EC

Rated 5 out of 5 by from I originally purchased the cobra mt600 pmr's from maplins and they worked great but lacked some basic features like on screen battery monitor, usb port, and you can't turn key tones off, so I exchanged for the cobra mt645 quad pack instead and they have all the extra functionality I need.i have used these mt645's all over from built up housing estate's to open land and can confirm I have so far had a max range of just under 4 miles with excellent sound quality on tx and rx out in the open and about half a mile in built up areas. These radios are brilliant for what they are and I highly recommend them! Thanks maplin!
Date published: 2014-11-11
Rated 5 out of 5 by from cobra mt645 Purchased these from maplins a while ago had about 10 miles range these are an excellent product and I would highly recommend them love the way they charge via USB works on my phone charger and my Samsung Xperia phone charger infact will charge on any plug with a USB the list is endless.....
Date published: 2015-01-09
Rated 5 out of 5 by from Cobra - Cobra MT645 PMR Quad Pack Bought these as a back up to our existing radio system, they have proven to be a great back up with a good signal and range.
Date published: 2016-11-16
Rated 5 out of 5 by from They did what it said on the box Purchased for the annual British Heart Foundation Bike Ride around the Goodwood motor circuit to coordinate starts, parking and first aid cover. Will save precious money for the charity.
Date published: 2016-08-23
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Dimensions & Weight









Power Specifications

Power Supply:


Batteries Required:

12 x AA rechargeable batteries



Standby Time:




PMR Radio

License Required:


Operating Specifications



Privacy Codes:






Frequency Range:

446.00625- 446.09375 MHz

Channel Step:

12.5 kHzkHz

Product Specifications

VOX Function:


Roger Bleep:


Pack Size:


Out Of Range Alert:


Headset/Microphone Socket:


Adjustable Squelch:


Hello, would children manage to use these?

Asked by: Linds123
These items are simple to use however we cannot guarantee that children would be able to use them.
Answered by: Dale
Date published: 2017-09-30

How many charging cables come with the Quad Pack? I will need one for each radio. So if the pack does not come with 4 can you buy these?

Asked by: FHCS
The cables included with this are USB to 2 x microUSB x 2. This will be a single USB port splitting off in to 2 micro USB connectors to charge two of the radios.
Answered by: James
Date published: 2016-11-07

do u get headphones/ ear piece included

Asked by: amanda
No these are not included.
Answered by: Billy
Date published: 2016-09-01

do these work with the (Helmet Speaker and Microphone Kit Code: DS34M) kit or does it only work with cobra headsets?

Asked by: brad
Cobra radios use a single plug for headsets. DS34M uses the twin &quot;Kenwood&quot; style connector. You can use these radios with a helmet kit, just not that one ... you would need
Answered by: Les
Date published: 2016-08-07

Approximately how long do the batteries or the charge last with average use?

Asked by: brookesdj15
The included batteries would be enough to run for a full day of standard use, however increased use or prolonged use of VOX settings may reduce this charge life. Standard AA batteries can be used in place of the rechargeable, however we would stress not to connect these to the charging circuit while fitted with non-rechargeable batteries.
Answered by: Gareth
Date published: 2016-06-28

can i get a pack of 6 which can be connected to each other

Asked by: alroy
NO ... but you can buy a quad and a twin and use them all together, or 2 quads ... or any number of radios ... as many as you wish, they all talk to each other. Quad: Twin:
Answered by: Les
Date published: 2016-06-21

It mentions a charging dock and usb. Can you charge the units with the charging dock rather than using the usb?

Asked by: mary60
The radios have a microUSB charging socket and come with a lead to charge the radios from a USB socket.or replace the batteries with alkaline AA batteries(not included)
Answered by: Billy
Date published: 2016-05-19

Do they have a clip on the back to attach to clothing?

Asked by: Amelia
Yes the PMR's have this.
Answered by: Dominic
Date published: 2016-03-17
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