What is Critical communications?


Critical communications refer to the exchange of information that is crucial for the functioning and safety of individuals, organizations, or society as a whole. These communications are often time-sensitive and can involve various channels and technologies. Critical communications play a vital role in emergency situations, public safety, and essential services.

The frequency bands used for critical communication vary depending on the specific application and region. Different sectors and agencies may use different frequency bands based on regulatory allocations, technical requirements, and the need for interoperability. Here are some commonly used frequency bands for critical communication:

  1. VHF (Very High Frequency) and UHF (Ultra High Frequency):
    • VHF (30-300 MHz): Often used for public safety communications, including police, fire, and emergency services.
    • UHF (300 MHz – 3 GHz): Commonly used for both public safety and private critical communication systems.
  2. 700 MHz and 800 MHz Bands:
    • 700 MHz: Used for public safety communications, particularly in the United States.
    • 800 MHz: Utilized for various critical communication systems, including public safety, utilities, and transportation.
  3. TETRA (Terrestrial Trunked Radio):
    • TETRA operates in the UHF band and is widely used for professional mobile radio (PMR) systems, especially in Europe. It provides secure and efficient communication for public safety and other critical applications.
  4. P25 (Project 25):
    • P25 is a suite of standards for digital radio communications designed for use by public safety organizations in North America. It operates in VHF, UHF, and 700/800 MHz bands.
  5. LTE (Long-Term Evolution):
    • LTE, commonly associated with commercial mobile networks, is increasingly being adopted for critical communications, offering broadband data capabilities for public safety and other critical applications.
  6. Satellite Communication:
    • Satellite communication is used for critical communication in remote or disaster-stricken areas where traditional terrestrial infrastructure may be compromised. Various frequency bands are allocated for satellite communication.
  7. Microwave Bands:
    • Microwave frequencies, such as those in the 2 GHz and 5 GHz bands, are sometimes used for point-to-point communication in critical infrastructure, including utilities and transportation.

As a professional manufacturer of RF components, like isolators, circulators, and filters, Jingxin designs and produces various types of components to support the solutions of  critical communication. You are welcome to contact us @ sales@cdjx-mw.com for more information.


Post time: Nov-30-2023