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Recommendation B.151)
NOMENCLATURE OF THE FREQUENCY AND WAVELENGTH BANDS
USED IN TELECOMMUNICATIONS
The CCITT,
considering
(a) that the merits of Heinrich Hertz (1857-1897), as a research worker on
the basic phenomena of radio waves, are universally recognized, as was confirmed
at the centenary of his birth; and that as early as 1937 the IEC adopted the
hertz (symbol: Hz) as a name for the unit of frequency (see inter alia,
Publication 27);
(b) that the nomenclature in this Recommendation should be as synoptic as
possible and that the designation of frequency bands should be as concise as
possible,
recommends
(1) that the hertz (Hz) be accepted for use in publications of the ITU, as
the name for the unit of frequency in accordance with Recommendation B.3 on the
use of the international system of units (SI);
(2) that Administrations should always use the nomenclature of the
frequency and wavelength bands given in Annex A:
- Table A-1/B.15 and Notes 1 and 2, which take account of No. 208 of the
Radio Regulations, and
- Note 3, which contains the proposal of the International Union of Radio
Sciences (URSI),
except in those cases where this would inevitably cause very serious
difficulties.
ANNEX A
(to Recommendation B.15)
Note: Tables A-1/B.15 to A-3/B.15 are missing
1) A similar text will be submitted to the CCIR as a revision of Recommendation
431-4.
Fascicle I.3 - Rec. B.15 PAGE1