{
  "url": "https://openlegislation.uk/wireless-telegraphy-ultra-wideband-equipment-exemption-regulations-2015/regulation-31",
  "json_url": "https://openlegislation.uk/wireless-telegraphy-ultra-wideband-equipment-exemption-regulations-2015/regulation-31.json",
  "legislation": "uksi/2015/591",
  "legislation_title": "The Wireless Telegraphy (Ultra-Wideband Equipment) (Exemption) Regulations 2015",
  "legislation_url": "https://openlegislation.uk/wireless-telegraphy-ultra-wideband-equipment-exemption-regulations-2015",
  "path": "regulation/31",
  "kind": "regulation",
  "number": "31",
  "heading": "Transmission limits",
  "text": "The condition referred to in regulation 30(4)(b) is that the ultra-wideband equipment only emits transmissions which—\n(a) in the frequencies up to 1.215 GHz when measured in any direction have—\n(i) a maximum mean power spectral density no greater than -85.0 dBm/MHz; and\n(ii) a maximum peak power no greater than -45.0 dBm or the equivalent transmission level;\n(iii) a total radiated power spectral density of -90.0 dBm/MHz;\n(b) in the frequency band 1.215 GHz to 1.73 GHz when measured in any direction—\n(i) have a maximum mean power spectral density —\n(aa) no greater than -85.0 dBm/MHz; or\n(bb) no greater than -70.0 dBm/MHz provided that a listen before talk mechanism described in harmonised standard ETSI EN 302 065-4 is used to mitigate interference to other users of the electromagnetic spectrum.\n(ii) have a maximum peak power no greater than -45.0 dBm or the equivalent transmission level; and\n(iii) have a total radiated power spectral density of -90.0 dBm/MHz;\n(c) in the frequency band 1.73 GHz to 2.2 GHz when measured in any direction have—\n(i) a maximum mean power spectral density no greater than -65.0 dBm/MHz;\n(ii) a maximum peak power no greater than -25.0 dBm or the equivalent transmission level; and\n(iii) a total radiated power spectral density of -70 dBm/MHz;\n(d) in the frequency band 2.2 GHz to 2.5 GHz when measured in any direction have—\n(i) a maximum mean power spectral density no greater than -50.0 dBm/MHz;\n(ii) a maximum peak power no greater than -10.0 dBm or the equivalent transmission level; and\n(iii) a total radiated power spectral density of -55 dBm/MHz;\n(e) in the frequency band 2.5 GHz to 2.69 GHz when measured in any direction—\n(i) have a maximum mean power spectral density —\n(aa) no greater than -65.0 dBm/MHz; or\n(bb) no greater than -50.0 dBm/MHz provided that a listen before talk mechanism described in harmonised standard ETSI EN 302 065-4 is used to mitigate interference to other users of the electromagnetic spectrum;\n(ii) have a maximum peak power spectral density no greater than -25.0 dBm or the equivalent transmission level; and\n(iii) have a total radiated power spectral density of -70.0 dBm/MHz;\n(f) in the frequency band 2.69 GHz to 2.7 GHz when measured in any direction have—\n(i) a maximum mean power spectral density no greater than -55.0 dBm/MHz;\n(ii) a maximum peak power no greater than -15.0 dBm or the equivalent transmission level; and\n(iii) a total radiated power spectral density below -65.0 dBm/MHz;\n(g) in the frequency band 2.7 GHz to 3.4 GHz when measured in any direction—\n(i) have a maximum mean power spectral density —\n(aa) no greater than -70.0 dBm/MHz; or\n(bb) no greater than -50.0 dBm/MHz provided that a listen before talk mechanism described in harmonised standard ETSI EN 302 065-4 is used to mitigate interference to other users of the electromagnetic spectrum;\n(ii) have a maximum peak power no greater than -30.0 dBm or the equivalent transmission level; and\n(iii) have a total radiated power spectral density of -75.0 dBm/MHz;\n(h) in the frequency band 3.4 GHz to 4.8 GHz when measured in any direction have—\n(i) a maximum mean power spectral density no greater than -50.0 dBm/MHz;\n(ii) a maximum peak power no greater than -10.0 dBm or the equivalent transmission level; and\n(iii) a total radiated power spectral density of -55.0 dBm/MHz;\n(i) in the frequency band 4.8 GHz to 5.0 GHz when measured in any direction have—\n(i) a maximum mean power spectral density no greater than -55.0 dBm/MHz;\n(ii) a maximum peak power no greater than -15.0 dBm or the equivalent transmission level; and\n(iii) a total radiated power spectral density below -65.0 dBm/MHz;\n(j) in the frequency band 5.0 GHz to 8.5 GHz when measured in any direction have—\n(i) a maximum mean power spectral density no greater than -50.0 dBm/MHz;\n(ii) a maximum peak power no greater than -10.0 dBm or the equivalent transmission level; and\n(iii) a total radiated power spectral density of -55.0 dBm/MHz; and\n(k) in the frequency bands above 8.5 GHz when measured in any direction have—\n(i) a maximum mean power spectral density no greater than -85.0 dBm/MHz;\n(ii) a maximum peak power no greater than -45.0 dBm or the equivalent transmission level; and\n(iii) a total radiated power spectral density of -90.0 dBm/MHz.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Words in reg. 31(b)(i)(bb) substituted (6.2.2018) by The Wireless Telegraphy (Ultra-Wideband Equipment) (Exemption) (Amendment) Regulations 2018 (S.I. 2018/44), regs. 1, 2(8)(a)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Words in reg. 31(e)(i)(bb) substituted (6.2.2018) by The Wireless Telegraphy (Ultra-Wideband Equipment) (Exemption) (Amendment) Regulations 2018 (S.I. 2018/44), regs. 1, 2(8)(b)"
    },
    {
      "type": "F",
      "label": "F3",
      "text": "Words in reg. 31(g)(i)(bb) substituted (6.2.2018) by The Wireless Telegraphy (Ultra-Wideband Equipment) (Exemption) (Amendment) Regulations 2018 (S.I. 2018/44), regs. 1, 2(8)(c)"
    },
    {
      "type": "I",
      "label": "I1",
      "text": "Reg. 31 in force at 25.3.2015, see reg. 1"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2015/591/regulation/31",
    "retrieved_at": "2026-10-28T23:43:48.352694+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}