# Commission Implementing Decision (EU) 2019/235 of 24 January 2019 on amending Decision 2008/411/EC as regards an update of relevant technical conditions applicable to the 3 400-3 800 MHz frequency band (notified under document C(2019) 262) (Text with EEA relevance), Division B: GENERAL PARAMETERS

Extent: E+W+S+N.I.

Within the 3 400-3 800 MHz frequency band:
1.. the duplex mode of operation shall be time division duplex (TDD);
2.. the assigned block sizes shall be in multiples of 5 MHz. The lower frequency limit of an assigned block shall be aligned with or spaced at multiples of 5 MHz from the lower band edge of 3 400 MHz;
3.. there shall be spectrum available providing the opportunity to access sufficiently large portions of contiguous spectrum, preferably 80-100 MHz, for wireless broadband electronic communications services;
4.. base stations and terminal stations transmission shall be in compliance with the technical conditions specified in Part C and Part D, respectively.

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Source: https://www.legislation.gov.uk/eudn/2019/235/annex/division/B (the official version)
Page: https://openlegislation.uk/eu-decision-2019-235/annex/division-B
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.