where: 1 1 285 ≤ p ≤ : reference frequency of the homogeneous pattern; fr 3 that the homogeneous pattern with a preferred 2.5 MHz interval be defined by the relation: = + 2.5 MHz fp fr p where: 1 1 799 p ≤ ≤ : reference frequency of the homogeneous pattern; fr 4 that the reference frequency of the homogeneous pattern for international connections should be 36 000 MHz; 5 that all go channels should be in one half of any bidirectional band, and all return channels in the other; 6 that the channel spacings, the centre gap, and the distance to the lower and XS, YS, upperband limits, and should be agreed by the administrations concerned, dependent on the Z1S Z2S, application and channel capacity envisaged (see Recommendation ITUR F.746 for definitions of and XS, YS ZS); that allocated blocks should result from aggregation of contiguous channels in accordance 7 with the homogeneous patterns. NOTE 1 Examples of RF channel arrangements based on 2 and 3 are described in recommends – Annexes 1 and 2. NOTE 2 Due regard has to be taken that, in certain countries, a 3.5 MHz homogeneous pattern, – interleaved by 1.75 MHz from that referred in 2, is used in conjunction with the main recommends pattern. NOTE 3 Examples of BWA system block (sub-band) arrangements are described in Annex 3. – Annex 1 Radio-frequency channel arrangements in the band 37.0-39.5 GHz used by some CEPT administrations in accordance with 2 recommends The radio-frequency channel arrangement for carrier spacings of 112 MHz, 56 MHz, 28 MHz, 14 MHz, 7 MHz and 3.5 MHz shall be derived as follows: Let be the centre frequency of 38 248 MHz   1  (642  3.5) MHz; f0 f be the centre frequency of a RF channel in the half of the band (MHz); f be the centre frequency of a RF channel in the upper half of the band (MHz); then the frequencies of individual channels are expressed by the following relationships: a) for systems with a carrier spacing of 112 MHz:
where: 1 ≤ p ≤ 1 285 fr : reference frequency of the homogeneous pattern; 3 that the homogeneous pattern with a preferred 2.5 MHz interval be defined by the relation: fp = fr + 2.5 p MHz where: 1 ≤ p ≤ 1 799 fr : reference frequency of the homogeneous pattern; 4 that the reference frequency of the homogeneous pattern for international connections should be 36 000 MHz; 5 that all go channels should be in one half of any bidirectional band, and all return channels in the other; 6 that the channel spacings, XS, the centre gap, YS, and the distance to the lower and upperband limits, Z1S and Z2S, should be agreed by the administrations concerned, dependent on the application and channel capacity envisaged (see Recommendation ITUR F.746 for definitions of XS, YS and ZS); 7 that allocated blocks should result from aggregation of contiguous channels in accordance with the homogeneous patterns. NOTE 1 – Examples of RF channel arrangements based on recommends 2 and 3 are described in Annexes 1 and 2. NOTE 2 – Due regard has to be taken that, in certain countries, a 3.5 MHz homogeneous pattern, interleaved by 1.75 MHz from that referred in recommends 2, is used in conjunction with the main pattern. NOTE 3 – Examples of BWA system block (sub-band) arrangements are described in Annex 3. Annex 1 Radio-frequency channel arrangements in the band 37.0-39.5 GHz used by some CEPT administrations in accordance with recommends 2 The radio-frequency channel arrangement for carrier spacings of 112 MHz, 56 MHz, 28 MHz, 14 MHz, 7 MHz and 3.5 MHz shall be derived as follows: Let f0 be the centre frequency of 38 248 MHz  f  1  (642  3.5) MHz; f be the centre frequency of a RF channel in the half of the band (MHz); be the centre frequency of a RF channel in the upper half of the band (MHz); then the frequencies of individual channels are expressed by the following relationships: a) for systems with a carrier spacing of 112 MHz:
R-REC-F.749-3-201203-I!!MSW-E.docx