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Kenwood NX-3820E UHF NEXEDGE/DMR/Analogue Mobile Radio

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Detailed Information

Authorised Dealer

We are a fully authorised worldwide dealer of Kenwood radio products. All products are supplied with a full warranty. Ensure your purchases are supplied by am authorised dealer. All products are supplied from the UK, and shipped registered and insured courier.

The NX-3820E is a UHF digital analogue hybrid mobile radio from Kenwood. A multi-protocol digital radio, the NX-3820E is designed to operate under NXDN, DMR or analogue protocols allowing for it to be used in a transition stage of radio systems. Built to military standards (MIL-STD-810 C/D/E/F/G) the radio is rugged and reliable, continuing to operate in weather conditions from as low as -30’C through to 50’C.

Enhanced Kenwood audio matched with digital protocols ensure a clear message is delivered each and every time. The NX-3820E uses both 2-tone & 5-tone signalling, with features such as busy channel lock-out to ensure that transmissions are not skewed through differing conversations. An Emergency key allows for fast response from a base station or other team members, allowing for the operative to quickly alert others should they enter a compromising position.

The NX-3820E has 10 programmable function keys, allow for the radio to be customised to the users needs. Group and private calls can both be made from the radio, allowing for a wider message to be transmitted or something which requires a level of discretion if needed. The NX-3820E allows for short and long data messages to be sent, this allowing for no urgent updates or requests to be made without a vocal conversation being needed. This radio is also available for VHF frequencies in the NX3720E.

Features Explained

Digital Basic Privacy

Basic Privacy uses a fixed "key" which is set when the radio is programmed, of which there are 255 possible "keys". Whilst this level of privacy is technically basic encryption, it's nevertheless relatively insecure. Comparable to analogue 'inversion' scrambling, it will prevent the 'casual' listener from hearing anything, but does not guarantee against eavesdropping.

 Basic Digital Privacy is built-in to the Kenwood NX-3820E.

Channel Scanning

Channel scanning enables the user to monitor a number of channels and respond when a transmission comes through. The scan feature can usually be programmed to include or exclude channels from the scan. Scanning fewer channels makes the scan faster.

A common example is when there is a private channel and community channel programmed. This is usually the case for a shop which is a member of the local business crime reduction (or shop-watch / pub-watch) scheme. The radio would "scan", or alternate between, both channels. Normally, they might only use channel 1 for their own private use within the organisation. But when a transmission (or call) comes through on the local business crime reduction (or shop-watch) scheme channel becomes active. Then within a few seconds the radio would revert back to it's original channel 1.

Digital hybrid radios can usually scan either or both digital and analogue channels simultaneously. This allows for an extremely flexible scan facility where the user can monitor many channels across both analogue and digital modes.

 Channel Scanning is built-in to the Kenwood NX-3820E.

DMR TDMA

TDMA is a technology that allows several users to share the same frequency channel by dividing the signal into different time slots. With DMR this is two time slots to every 12.5KHz frequency channel allocation. Before DMR every 12.5KHz frequency allocation could carry just one broadcast of RF traffic. Now with DMR 12.5KHz bandwidth allows two voice channels. See the video below for an explanation on how this works.

Information Video

 DMR TDMA is built-in feature to the Kenwood NX-3820E.

Ofcom Licence Options

All licensed radios require a licence issued by Ofcom. Radiotronics can facilitate that and make the application on your behalf. Below are the licence options.

Ofcom Licence Options
Simple UK Simple Site Suppliers Light Technically Assigned
Security / Construction Hospitality / Bars etc. Hire Companies Large Buildings
£75 for 5 years £75 for 5 years £75 for 5 years From £100/yr
3 shared assigned channels that can be used anywhere in the UK. Any of our handheld two way radios can be programmed to SImple UK. Up to 15 shared channels that can only be used at your premises. Any of our handheld two way radios can be programmed to SImple Site. Up to 15 shared channels that can be used for rental companies anywhere in the UK. Unique channels technically assigned only to you. Used for repeater based systems.
A note on licensed frequencies. The Ofcom licence you hold or buy denotes the frequency your radios will operate on. If you already have some radios and you would like your new radios programmed the work together, please select technically assigned, and email us your ofcom licence details to websales@radiotronics.co.uk. If in doubt, please call us on 01425 533 533.

Technical Information

SKU NX3820E
Analogue or Digital Analogue, Digital
Band (VHF or UHF) UHF
Channels 512
Signalling Type CTCSS, DMR, NXDN
Type / Group Mobile Radios
Height (mm) 43
Width (mm) 160
Depth (mm) 160
Weight 1200.0000
Brand Kenwood
Model NX3820
Manufacturer Part Number NX3820

Listed in / compatible with