Sec.  90.531   Band plan.

   This section sets forth the band plan for the 763–775 MHz and 793–805 MHz
   public safety bands.

   (a) Base and mobile use. The 763–775 MHz band may be used for base, mobile
   or fixed (repeater) transmissions. The 793–805 MHz band may be used only for
   mobile or fixed (control) transmissions.

   (b) Narrowband segments. There are two band segments that are designated for
   use with narrowband emissions. Each of these narrowband segments is divided
   into 960 channels having a channel size of 6.25 kHz as follows:
   Frequency range Channel Nos.
   769–775 MHz            1–960
   799–805 MHz         961–1920

   (1) Narrowband interoperability channels. The following narrowband channels
   are designated for nationwide interoperability licensing and use: 23, 24,
   39, 40, 63, 64, 79, 80, 103, 104, 119, 120,143, 144, 159, 160, 183, 184,
   199, 200, 223, 224, 239, 240, 263, 264, 279, 280, 303, 304, 319, 320, 641,
   642, 657, 658, 681, 682, 697, 698, 721, 722, 737, 738, 761, 762, 777, 778,
   801, 802, 817, 818, 841, 842, 857, 858, 881, 882, 897, 898, 921, 922, 937,
   938, 983, 984, 999, 1000, 1023, 1024, 1039, 1040, 1063, 1064, 1079, 1080,
   1103, 1104, 1119, 1120, 1143, 1144, 1159, 1160, 1183, 1184, 1199, 1200,
   1223, 1224, 1239, 1240, 1263, 1264, 1279, 1280, 1601, 1602, 1617, 1618,
   1641, 1642, 1657, 1658, 1681, 1682, 1697, 1698, 1721, 1722, 1737, 1738,
   1761, 1762, 1777, 1778, 1801, 1802, 1817, 1818, 1841, 1842, 1857, 1858,
   1881, 1882, 1897, 1898.

   (i) Narrowband data Interoperability channels. The following channel pairs
   are reserved nationwide for the express purpose of data transmission only:
   279/1239, 280/1240, 921/1881, and 922/1882.

   (ii) Narrowband calling Interoperability channels. The following channel
   pairs are dedicated nationwide for the express purpose of Interoperability
   calling only: 39/999, 40/1000, 681/1641, and 682/1642. They may not be used
   primarily for routine, day-to-day communications. Encryption is prohibited
   on the designated calling channels.

   (iii)  Narrowband  trunking  Interoperability  channels. The following
   Interoperability channel pairs may be combined with the appropriate adjacent
   secondary trunking channel pairs and used in trunked mode on a secondary
   basis to conventional Interoperability operations: 23/983, 24/984, 103/1063,
   104/1064,  183/1143, 184/1144, 263/1223, 264/1224, 657/1617, 658/1618,
   737/1697, 738/1698, 817/1777, 818/1778, 897/1857, 898/1858. For every ten
   general use channels trunked at a station, entities may obtain a license to
   operate in the trunked mode on two of the above contiguous Interoperability
   channel pairs. The maximum number of Interoperability channel pairs that can
   be trunked at any one location is eight.

   (2) Narrowband reserve channels. The following narrowband channels are
   undesignated and reserved: 37, 38, 61, 62, 77, 78, 117, 118, 141, 142, 157,
   158, 197, 198, 221, 222, 237, 238, 277, 278, 301, 302, 317, 318, 643, 644,
   683, 684, 699, 700, 723, 724, 763, 764, 779, 780, 803, 804, 843, 844, 859,
   860, 883, 884, 923, 924, 939, 940, 997, 998, 1021, 1022, 1037, 1038, 1077,
   1078, 1101, 1102, 1117, 1118, 1157, 1158, 1181, 1182, 1197, 1198, 1237,
   1238, 1261, 1262, 1277, 1278, 1603, 1604, 1643, 1644, 1659, 1660, 1683,
   1684, 1723, 1724, 1739, 1740, 1763, 1764, 1803, 1804, 1819, 1820, 1843,
   1844, 1883, 1884, 1899, 1900.

   (3)  Narrowband  low  power channels subject to regional planning. The
   following narrowband channels are designated for low power use for on-scene
   incident  response  purposes  using  mobiles  and portables subject to
   Commission-approved regional planning committee regional plans. Transmitter
   power must not exceed 2 watts (ERP): Channels 1–8 paired with Channels
   961–968, and Channels 949–958 paired with Channels 1909–1918.

   (4)  Narrowband low power itinerant channels. The following narrowband
   channels are designated for low power use for on-scene incident response
   purposes using mobiles and portables. These channels are licensed nationwide
   for itinerant operation. Transmitter power must not exceed 2 watts (ERP):
   Channels 9–12 paired with Channels 969–972 and Channels 959–960 paired with
   Channels 1919–1920.

   (5)  Narrowband  state channels. The following narrowband channels are
   designated for direct licensing to each state (including U.S. territories,
   districts,  and possessions): 25–36, 65–76, 105–116, 145–156, 185–196,
   225–236, 265–276, 305–316, 645–656, 685–696, 725–736, 765–776, 805–816,
   845–856,  885–896,  925–936, 985–996, 1025–1036, 1065–1076, 1105–1116,
   1145–1156, 1185–1196, 1225–1236, 1265–1276, 1605–1616, 1645–1656, 1685–1696,
   1725–1736, 1765–1776, 1805–1816, 1845–1856, 1885–1896. Voice operations on
   these channels are subject to compliance with the spectrum usage efficiency
   requirements set forth in  Sec. 90.535(d).

   (6) Narrowband general use channels. All narrowband channels established in
   paragraph (b) of this section, other than those listed in paragraphs (b)(1),
   (b)(2), (b)(4) and (b)(5) of this section are designated to public safety
   eligibles  subject  to Commission approved regional planning committee
   regional plans. Voice operations on these channels are subject to compliance
   with the spectrum usage efficiency requirements set forth in  Sec. 90.535(d).

   (7) Secondary trunking channels. The following channel pairs are reserved
   for secondary trunking operations: 21/981, 22/982, 101/1061, 102/1062,
   181/1141,  182/1142, 261/1221, 262/1222, 659/1619, 660/1620, 739/1699,
   740/1700, 819/1779, 820/1780, 899/1859, and 900/1860. They may be used only
   in combination with the appropriate adjacent Interoperability channel pairs
   specified in paragraph (b)(1)(iii) of this section in trunked systems.

   (c) [Reserved]

   (d) Combining channels. Except as noted in this section, at the discretion
   of the appropriate regional planning committee, contiguous channels may be
   used  in  combination  in order to accommodate requirements for larger
   bandwidth emissions, in accordance with this paragraph. Interoperability
   channels may not be combined with channels in another group except for
   channels for secondary trunking channels.

   (1) Narrowband. Subject to compliance with the spectrum usage efficiency
   requirements set forth in  Sec. 90.535, two or four contiguous narrowband (6.25
   kHz) channels may be used in combination as 12.5 kHz or 25 kHz channels,
   respectively. The lower (in frequency) channel for two channel combinations
   must be an odd ( i.e., 1, 3, 5  *  *  *) numbered channel. The lowest (in
   frequency) channel for four channel combinations must be a channel whose
   number  is  equal to 1+(4xn), where n = any integer between 0 and 479,
   inclusive ( e.g., channel number 1, 5,  *  *  * 1917). Channel combinations
   are designated by the lowest and highest channel numbers separated by a
   hyphen, e.g., “1–2” for a two channel combination and “1–4” for a four
   channel combination.

   (2) [Reserved]

   (e) Channel pairing. In general, channels must be planned and assigned in
   base/mobile pairs that are separated by 30 MHz. However, until December 31,
   2006, channels other than those listed in paragraphs (b)(1) and (c)(1), may
   be planned and assigned in base/mobile pairs having a different separation,
   where necessary because 30 MHz base/mobile pairing is precluded by the
   presence of one or more co-channel or adjacent channel TV/DTV broadcast
   stations.

   (f) Internal guard band. The internal guard band (768–769/798–799 MHz) is
   reserved.

   (g) Broadband. The 763–768 MHz and 793–798 MHz bands are allocated for
   broadband communications pursuant to the Public Safety Broadband License.

   [ 63 FR 58651 , Nov. 2, 1998, as amended at  65 FR 66654 , Nov. 7, 2000;  66 FR 10635 , 10636, Feb. 16, 2001;  67 FR 61005 , Sept. 27, 2002;  67 FR 76700 , Dec.
   13, 2002;  72 FR 48860 , Aug. 24, 2007]