Digital Mobile Radio (DMR) has three defined tiers that allow manufacturers to create equipment for different types of customer. Some customers may only require a simple system where each radio talks to every other radio, whereas emergency services may require country-wide networks with encryption and remote programming. You can find out about these different tiers below.

What is DMR Tier I?

DMR Tier I is a range of DMR frequencies that have been allocated by the European Telecommunications Standards Institute (ETSI) for licence-free use in the European Union.

DMR Tier I defines 16 channels for DMR use between 446 MHz and 446.2 MHz, allowing anyone to purchase Tier I compatible radio equipment and use it straight away. Tier I also defines that the maximum power emitted by each radio is less than 500 mW; for comparison, Talkpod DMR Series most popular radio has a maximum power of 5 W (10 times higher).

The 16 DMR Tier I frequencies are not allocated so equipment using these frequencies has the potential to be interfered with by other users in the area. This interference may cause you communication issues in business-critical situations, which is why you should be mindful of the risks before purchasing DMR Tier I equipment.

What is DMR Tier II?

DMR Tier II is radio equipment that can operate anywhere within the DMR frequency range, but usually operates within the 136 - 174 MHz band for VHF and 403 - 527 MHz band for UHF. DMR Tier II equipment must be licenced from the frequency licencing body in your country which will avoid issues with interference and low power that happen with DMR Tier I equipment.

DMR Tier II equipment can utilise repeater stations to increase the range of the system, allowing you to build up a radio infrastructure to meet your geographical requirements.

What is DMR Tier III?

DMR Tier III radio equipment works on the same frequency range as Tier II equipment but adds in many features to give the system more functions to better fit your situation. Tier III equipment operates in “Trunked mode”, which means radios are automatically allocated to frequencies rather than having a fixed frequency.

Trunking allows you to licence fewer frequencies while maintaining the same number of calls, lowering licence costs. Automatic allocation of frequencies removes the likelihood of two groups trying to communicate using the same channel and interfering with each other, which is especially important in large systems.

DMR Tier III adds data services which grant the radios SMS capability, location-based (GPS) services, telemetry data, and over-the-air programming, as well as remote control of radios such as the ability to stop radios transmitting which have been accidentally left on.

Talkpod is a Members of the DMR Association?

Yes, Talkpod Technology Co., Ltd. is a Category 1 member – Full Members, Manufacturers of the Digital Mobile Radio Association since September 2016.

Talkpod Technology legally uses the DMR Trademark and works with all members of the Digital Mobile Radio Association to develop, promote and popularize DMR technology.

Has Talkpod obtained DMR’s patented technology authorization?

Yes, Talkpod's (Quanshun Group) DMR series products utilize patented technologies related to DMR and are officially authorized for use by the holders of DMR patents, with regular payment of DMR patent royalties.

Talkpod Technology is dedicated to innovation and respecting intellectual property rights. We believe in the importance of honoring and upholding the rights of patent holders, and we are committed to operating in full compliance with all applicable laws and regulations governing intellectual property.

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