Radio spectrum allocations

Footnotes

• 5.268   Use of the frequency band 410-420 MHz by the space research service is limited to space-to-space communication links with an orbiting, manned space vehicle. The power flux-density at the surface of the Earth produced by emissions from transmitting stations of the space research service (space-to-space) in the frequency band 410-420 MHz shall not exceed −153 dB(W/m²) for 0° ≤ δ ≤ 5°, −153 + 0.077 (δ − 5) dB(W/m²) for 5° ≤ δ ≤ 70° and −148 dB(W/m²) for 70° ≤ δ ≤ 90°, where δ is the angle of arrival of the radio-frequency wave and the reference bandwidth is 4 kHz. In this frequency band, stations of the space research service (space-to-space) shall not claim protection from, nor constrain the use and development of, stations of the fixed and mobile services. No. 4.10 does not apply. (WRC 15)

• G5   In the bands 162.0125-173.2, 173.4-174, 406.1-410 and 410-420 MHz, use by the military services is limited by the provisions specified in the channeling plans shown in Sections 4.3.7 and 4.3.9 of the NTIA Manual.

• US13   The following center frequencies, each with a channel bandwidth not greater than 12.5 kHz, are available for assignment to non-Federal fixed stations for the specific purpose of transmitting hydrological and meteorological data in cooperation with Federal agencies, subject to the condition that harmful interference will not be caused to Federal stations:

  Hydro Channels (MHz)
  169.4250	170.2625	171.1000	406.1250
  169.4375	170.2750	171.1125	406.1750
  169.4500	170.2875	171.1250	412.6625
  169.4625	170.3000	171.8250	412.6750
  169.4750	170.3125	171.8375	412.6875
  169.4875	170.3250	171.8500	412.7125
  169.5000	171.0250	171.8625	412.7250
  169.5125	171.0375	171.8750	412.7375
  169.5250	171.0500	171.8875	412.7625
  170.2250	171.0625	171.9000	412.7750
  170.2375	171.0750	171.9125	415.1250
  170.2500	171.0875	171.9250	415.1750

      New assignments on the frequencies 406.125 MHz and 406.175 MHz are to be primarily for paired operations with the frequencies 415.125 MHz and 415.175 MHz, respectively.

• US55   In the bands 162.0375-173.2 MHz and 406.1-420 MHz, the FCC may authorize public safety applicants to use the 40 Federal Interoperability Channels that are designated for joint Federal/non-Federal operations for law enforcement, public safety, emergency response and disaster response in Section 4.3.16 of the NTIA Manual, subject to the condition that that these non-Federal mobile (including portable) interoperability communications shall conform to the national plans specified therein, and in particular, shall not cause harmful interference to Federal stations. The procedure for authorizing such use is set forth in 47 CFR 90.25.

• US64   (a) In the band 401-406 MHz, the mobile, except aeronautical mobile, service is allocated on a secondary basis and is limited to, with the exception of military tactical mobile stations, Medical Device Radiocommunication Service (MedRadio) operations. MedRadio stations are authorized by rule on the condition that harmful interference is not caused to stations in the meteorological aids, meteorological-satellite, and Earth exploration-satellite services, and that MedRadio stations accept interference from stations in the meteorological aids, meteorological-satellite, and Earth exploration-satellite services.

      (b) The bands 413-419 MHz, 426-432 MHz, 438-444 MHz, and 451-457 MHz are also allocated on a secondary basis to the mobile, except aeronautical mobile, service. The use of this allocation is limited to MedRadio operations. MedRadio stations are authorized by rule and operate in accordance with 47 CFR part 95.