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Rome International Airport chooses DAMM as supplier for Mission Critical Communication. Damm.dk (2009-09-14). Retrieved on 2013-07-16.

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TETRA Association". TETRA Association. 2012-03-22. Archived from the original on 2018-08-16 . Retrieved 2012-03-28.Amateur radio users engage in both DMO (Direct Mode Operation) and TMO (Trunked Mode Operation) modes, both within the country and globally, connecting through gateways such as Zello and SVXLink. TETRA provides for authentication of terminals towards infrastructure and vice versa. For protection against eavesdropping, air interface encryption and end-to-end encryption is available. Provide specific transportation application software to the end-user agents (service acquisition, fraud, and aggression control). Allow any given agent while in exercise, to exploit any given radio terminal without materiel constraint.

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Metro: First line operation started in 2008. 2nd line operation started 2013. 2nd line expansion (L2B) started in 2014 and started operation on August 8, 2018. This of course raises the obvious question, and unfortunately there is no happy answer. Even 3 miles is certainly not a sufficient distance to allow undisturbed sleep. And on the UK mainland, the odds are that 90% of the population are living within 2 miles of at least 2 or 3 Tetra Masts.Service acquisition admits different authorised agents to establish communication channels between different services by calling the service identity, and without possessing the complete knowledge of the ISSI, GSSI, or any other TETRA related communication establishment numbering plan. Service acquisition is administered through a communication rights centralised service or roll allocation server, interfaced into the TETRA core network. Unfortunately it is also a very good way to prevent much of the UK population from getting deep and restful sleep at night. Why? Because when we go to sleep, our brainwave pattern has to get down to 3 hz or less (3 cycles per second or less); really deep sleep may be as low as 1 hz. Our waking state brainwave pattern is roughly between 12 and 25 hz, the “beta” rhythm.

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Police, fire services, ambulances, Search and Rescue units, Red Cross, bus service (Strætó Bs.), The Icelandic National Broadcasting Service, most utility companies, municipalities and private users such as excursion companies. Archived copy". Archived from the original on 2014-02-12 . Retrieved 2014-02-13. {{ cite web}}: CS1 maint: archived copy as title ( link) To provide confidentiality the TETRA air interface is encrypted using one of the TETRA Encryption Algorithm (TEA) ciphers. The encryption provides confidentiality (protect against eavesdropping) as well as protection of signalling.

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Up to 7.2kbit/s per timeslot, in the case of point-to-point connections, and 3.5kbit/s per timeslot in case of IP encapsulation. Tetra gear in ham radio was initially introduced by YO8TEH in 2014 in DMO (Direct Mode Operation). Subsequently, it evolved into gateways through platforms like Zello and Teamspeak. In 2021, a part of the system was split and migrated to svxlink, along with its classic application. The first Tetra Repeater for Ham Radio use in Romania was licensed under the call sign YO8TEH-1, while the second TMO repeater was licensed under the call sign YO8Q.

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TETRA uses time-division multiple access (TDMA) with four user channels on one radio carrier and 25kHz spacing between carriers. Both point-to-point and point-to-multipoint transfer can be used. Digital data transmission is also included in the standard though at a low data rate. Advances in DSP technology have led to the introduction of multi-carrier transmission standards employing QAM modulation. WiMAX, Wi-Fi and TEDS standards are part of this family.

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DAMM deployed for regional network in North West Russia. Damm.dk (2011-08-22). Retrieved on 2013-07-16. Police, fire brigades, civil protection, ambulances, forest guards, water agency, gas company, road maintenance service and other public agencies