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Cobra MT645 PMR Twin Pack

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Quoting product code: A79LU


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About this product


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

Product overview

• Twin 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 lead (USB power socket not included) – three AA batteries required per unit (six 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 two 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 all the radios from one 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 N77EA)as well as mains USB socket adapters (not included Order Code A70WC). 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 A great set of radios I have had a set of these radios for well over a year. We use them when camping and when out and about. I have used them in a convoy and just for general fun. They are of good quality, the batteries last for a long time, and they have a lot of features. I did a couple of experiments with these and have had well over 5 miles range from these (this was on a hill with line of site). Under normal operating conditions they have a decent range, under urban operating conditions realistically you get about half a mile from these. This is less to do with the radios and more to do with how UHF waves travel and are absorbed.
Date published: 2017-08-18
Rated 5 out of 5 by from great for using round camp sites very clear and easy to use.
Date published: 2016-03-21
Rated 1 out of 5 by from Don't buy, can't use them between two vehicles 100 metres apart. Constant interference These are a truely terrible product, can't operate between two vehicles 100 metres apart, don't know where they get the advertised range from
Date published: 2017-08-06
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Dimensions & Weight









Power Specifications

Power Supply:


Batteries Required:

3x AA Per Unit (Rechargeable battery packs included)



Standby Time:


Auto Power Off:



Package Contents:

2x Cobra MT645 VP PMR Radios
2x Rechargeable Battery Packs
1x USB Charging Cable



Twin Pack PMR Radios

License Required:


License Form Included:



Water Resistant:


Impact Resistant:


IP Rating:


Operating Specifications



Privacy Codes:






Frequency Range:

446006.25 to 446093.75 kHz

Channel Step:


Maximum Operating Distance:





Warranty Type:


Product Specifications

Scan & Trap Function:


VOX Function:


Roger Bleep:


Pack Size:


Out Of Range Alert:


Headset/Microphone Socket:


Adjustable Squelch:

is there a desktop charger for this model

Asked by: potmaking
Unfortunately, we do not stock a desktop charger.
Answered by: Billy
Date published: 2017-08-23

Is there a Vox operated headset available for these radios?

Asked by: Ghostrider13
Russell appears to be totally wrong - products N67KB &amp; N68KB seem to fit the bill and as this unit does have VOX capability it is not unreasonable to expect that to work with those items...
Answered by: SlySven
Date published: 2017-07-06

Can I add more handsets to this item? I was looking for 4 handsets linked together?

Asked by: LPS900
Yes, you could add more headsets.
Answered by: Billy
Date published: 2017-06-29

Do these have sub channels? Thanks.&nbsp;

Asked by: Alfie55
Unfortunately i am sorry but the item in question doesn't support use in you intended application.
Answered by: darren cordon
Date published: 2017-05-16

Hi. Is it possible to leave one of these units on charge (USB) and in VOX mode at the same time?

Asked by: Dave
Answered by: Dominic
Date published: 2017-05-11

Does this item have a socket for an earpiece?

Asked by: Greatbossman
Yes this will work fine in your intended application.
Answered by: Darren
Date published: 2016-12-31

When in use are these silent until someone calls or is there a continuous slight hissing sound? Please do not use my email for marketing.

Asked by: DeFW
When in use are these are silent
Answered by: Dominic
Date published: 2016-12-28

would an apple iphone mains/usb power adapter be suitable for charging this cobra MT645 unit?

Asked by: Brain
Unfortunately i am sorry but the item in question doesn't support use in you intended application.
Answered by: Darren
Date published: 2016-11-29
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