1 Arrangements with duplex spacing XS = 530 MHz (Fig. 6) a) for systems with a carrier spacing of 28 MHz: lower half of band: = 505 + 28 fn f0 n – upper half of band: = + 25 + 28 f0 n where: = 1, 2, 16; n … b) for systems with a carrier spacing of 14 MHz: lower half of band: = 498 + 14 fn f0 – n upper half of band: = + 32 + 14 f0 n where: = 1, 2, 32; n … c) for systems with a carrier spacing of 7 MHz: lower half of band: = 494.5 + 7 fn f0 n – upper half of band: = + 35.5 + 7 f0 n where: = 1, 2, 65. n … 2 Arrangements with duplex spacing XS = 490 MHz (Fig. 7) a) for systems with a carrier spacing of 28 MHz: lower half of band: = 505 + 28 f f0 n – upper half of band: = 15 + 28 f0 n – where: = 1, 2, 17; n … b) for systems with a carrier spacing of 14 MHz: lower half of band: = 498 + 14 f f0 n – upper half of band: = 8 + 14 f0 n where: = 1, 2, 34; n … c) for systems with a carrier spacing of 7 MHz: lower half of band: = 494.5 + 7 f f0 n – upper half of band: = 4.5 + 7 f0 n – where: = 1, 2, 68. n … NOTE 1 When very high capacity (e.g. twice STM-1) links are required and the network coordination – permits, with the agreement of the administrations concerned, the use of any two adjacent 28 MHz channels specified in a) is possible, for a wider bandwidth system, with the centre frequency lying in the central point of the distance between the two 28 MHz adjacent channels.
1 Arrangements with duplex spacing XS = 530 MHz (Fig. 6) a) for systems with a carrier spacing of 28 MHz: lower half of band: fn = f0 – 505 + 28 n upper half of band: = f0 + 25 + 28 n where: n = 1, 2, … 16; b) for systems with a carrier spacing of 14 MHz: lower half of band: fn = f0 – 498 + 14 n upper half of band: = f0 + 32 + 14 n where: n = 1, 2, … 32; c) for systems with a carrier spacing of 7 MHz: lower half of band: fn = f0 – 494.5 + 7 n upper half of band: = f0 + 35.5 + 7 n where: n = 1, 2, … 65. 2 Arrangements with duplex spacing XS = 490 MHz (Fig. 7) a) for systems with a carrier spacing of 28 MHz: lower half of band: f = f0 – 505 + 28 n upper half of band: = f0 – 15 + 28 n where: n = 1, 2, … 17; b) for systems with a carrier spacing of 14 MHz: lower half of band: f = f0 – 498 + 14 n upper half of band: = f0 8 + 14 n where: n = 1, 2, … 34; c) for systems with a carrier spacing of 7 MHz: lower half of band: f = f0 – 494.5 + 7 n upper half of band: = f0 – 4.5 + 7 n where: n = 1, 2, … 68. NOTE 1 – When very high capacity (e.g. twice STM-1) links are required and the network coordination permits, with the agreement of the administrations concerned, the use of any two adjacent 28 MHz channels specified in a) is possible, for a wider bandwidth system, with the centre frequency lying in the central point of the distance between the two 28 MHz adjacent channels.