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  1. The UMTS frequency bands are radio frequencies used by third generation (3G) wireless Universal Mobile Telecommunications System networks. They were allocated by delegates to the World Administrative Radio Conference (WARC-92) held in Málaga-Torremolinos, Spain between 3 February 1992 and 3 March 1992.
    en.wikipedia.org/wiki/UMTS_frequency_bands
    The specific frequency bands originally defined by the UMTS standard are 1885–2025 MHz for the mobile-to-base (uplink) and 2110–2200 MHz for the base-to-mobile (downlink). In the US, 1710–1755 MHz and 2110–2155 MHz are used instead, as the 1900 MHz band was already used.
    en.wikipedia.org/wiki/UMTS
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    The UMTS frequency bands are radio frequencies used by third generation (3G) wireless Universal Mobile Telecommunications System networks. They were allocated by delegates to the World Administrative Radio Conference (WARC-92) held in Málaga-Torremolinos, Spain between 3 February 1992 and 3 March 1992.
    It employs spread spectrum techniques to provide high data rates and efficient use of spectrum. Frequency Bands: UMTS operates in several frequency bands globally, including the 2100 MHz band (commonly referred to as UMTS 2100) and the 850 MHz and 1900 MHz bands used in some regions, especially in North America.
    Europe-wide, several bands are provided either specifically for UMTS-TDD or for similar technologies. These are 1900 MHz and 1920 MHz and between 2010 MHz and 2025 MHz. In several countries the 2500–2690 MHz band (also known as MMDS in the USA) have been used for UMTS-TDD deployments.
    en.wikipedia.org
    Networks on UMTS-bands 2 and 4 allow roaming in ITU Region 2 (Americas) only. Networks on UMTS band 5 are suitable for roaming in ITU Regions 2 and 3 (single countries). Networks in Europe, the Middle East and Africa are exclusively deployed on 2100 MHz (Band 1) and/or 900 MHz (Band 8). Jun 2017 (?) 5 MHz of band 5 refarmed to LTE. Nov 2015 (?)
  3. UMTS frequency bands - WikiMili, The Best Wikipedia Reader

  4. 3G UMTS networks: What is UMTS and why does it use ...

  5. UMTS (universal mobile telecommunication system)

  6. About: UMTS frequency bands - DBpedia Association

  7. BfS - UMTS - UMTS - Federal Office for Radiation Protection

  8. 3G UMTS frequency band

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