TETRA(Terrestrial Trunked Radio)

TETRA Radio Frame is a digital communication system utilized by emergency services, security forces, and other agencies. It permits features like texts and location monitoring and offers quality voice communication and encryption for privacy. When communication is most needed, TETRA's particular radio frequencies are utilized for reliable operation in difficult situations like crises or distant locations.

TETRA

TETRA is designed to provide a secure, reliable and robust communication solution with high voice quality. TETRA uses organization such as

1. Public safety: TETRA is used in public safety such as if any type of accident or incident occur then police use his walky-talky to connect with ambulance and other police team member.
2. Transportation: TETRA is used in transportation such as if a pilot wants to connect with another pilot in that case it is used to transform messages from one to another.
3. Government: Government uses TETRA if government wants to send a message or information to his/her public then he used radio channels.
4. Military: Military uses TETRA on border and less networking area when any soldier wants to send a message to another soldier TETRA help them.

Advantages of TETRA

1. During voice call communication are not interrupted when moving to another network sites.
2. It is used to gives longer ranges.
3. In absence of network mobiles can use direct mode where by they share channel directly (Walky-Talky mode)
4. It also provides a point to point communication.
5. It is used in both public safety and commercial sector.
6. It is used to enhanced our communication by improving our voice quality. If any person is calling to another then voice quality is good with help of TETRA.
7. It is scalable hence a large number of people can use at a time in a large geographical area at any time.
8. It is resilience it is used in critical communication area where communication is difficult and one can not communicate to each other.
9. It is used to communicate between many agencies and organization at many point of time

Disadvantage of TETRA

1. Security: In TETRA security issue has been identified
2. Cost: Setting up and maintaining TETRA networks can be expensive, especially for smaller organizations.
3. Coverage: TETRA may not cover remote or rural areas well, leading to unreliable communication in these regions.
4. Interoperability: Connecting TETRA with other communication systems can be challenging, affecting seamless operations.
5. Data Speed: TETRA's data transmission speeds may be slower compared to newer technologies designed for fast data transfer.
6. Technology Limits: While effective for voice, TETRA may not support advanced applications or multimedia as well as newer standards.

TETRA Frequencies in Other Countries

Country	Allocation	Frequency Pairs(MHz)
France	civilian/private Emergency services	410-430 380-400
Belgium	Emergency services/civilian Commercial	380-386.5, 390-396.5 410-420
Germany	Emergency Services	380-385, 390-395
Italy	Emergency services/Armed forces	380-390
Norway	Emergency services	380-385, 390-395

Conclusion

Overall Terrestrial Trunked radio is developed which is used by government, Military, and many organization and agencies for easily communicate from one to other. TETRA provide us a clear communication from one person to another. It is scalable i.e. it is used by many people at any time in a large geographical area and easily communicate to each other. TETRA scalability, resilience ability provide high quality communication which is used by many agencies and organization. TETRA is also beneficial in security it provides security in a long term.

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