Valo Analytica

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Radio spectrum allocations

Look up a frequency or a range.

Examples: 88.5 MHz, 1350–1430 MHz, 2.4 GHz

53.999999 MHz (53,999,999 Hz)

U.S. Federal Government Allocations

50 – 54 MHz

Footnotes

  • 5.162A   Additional allocation: in Germany, Austria, Belgium, Bosnia and Herzegovina, China, Vatican, Denmark, Spain, Estonia, the Russian Federation, Finland, France, Ireland, Iceland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, North Macedonia, Monaco, Montenegro, Norway, the Netherlands, Poland, Portugal, the Czech Rep., the United Kingdom, Serbia, Slovenia, Sweden and Switzerland the frequency band 46-68 MHz is also allocated to the radiolocation service on a secondary basis. This use is limited to the operation of wind profiler radars in accordance with Resolution 217 (WRC 97). (WRC 19)

  • 5.163   Additional allocation: in Armenia, Belarus, the Russian Federation, Georgia, Kazakhstan, Latvia, Moldova, Uzbekistan, Kyrgyzstan, Tajikistan, Turkmenistan and Ukraine, the frequency bands 47-48.5 MHz and 56.5 58 MHz are also allocated to the fixed and land mobile services on a secondary basis. (WRC 19)

  • 5.164   Additional allocation: in Albania, Algeria, Germany, Austria, Belgium, Bosnia and Herzegovina, Botswana, Bulgaria, Côte d'Ivoire, Croatia, Denmark, Spain, Estonia, Eswatini, Finland, France, Gabon, Greece, Hungary, Ireland, Israel, Italy, Jordan, Lebanon, Libya, Liechtenstein, Lithuania, Luxembourg, Madagascar, Mali, Malta, Morocco, Mauritania, Monaco, Montenegro, Nigeria, Norway, the Netherlands, Poland, Syrian Arab Republic, Slovakia, Czech Rep., Romania, the United Kingdom, Serbia, Slovenia, Sweden, Switzerland, Chad, Togo, Tunisia and Turkey, the frequency band 47-68 MHz, in South Africa the frequency band 47-50 MHz, and in Latvia the frequency bands 48.5-56.5 MHz and 58-68 MHz, are also allocated to the land mobile service on a primary basis. However, stations of the land mobile service in the countries mentioned in connection with each frequency band referred to in this footnote shall not cause harmful interference to, or claim protection from, existing or planned broadcasting stations of countries other than those mentioned in connection with the frequency band. (WRC 19)

  • 5.165   Additional allocation: in Angola, Cameroon, Congo (Rep. of the), Egypt, Madagascar, Mozambique, Niger, Somalia, Sudan, South Sudan, Tanzania and Chad, the frequency band 47-68 MHz is also allocated to the fixed and mobile, except aeronautical mobile, services on a primary basis. (WRC 19)

  • 5.167   Alternative allocation: in Bangladesh, Brunei Darussalam, India, Iran (Islamic Republic of), Pakistan and Singapore, the frequency band 50-54 MHz is allocated to the fixed, mobile and broadcasting services on a primary basis. (WRC-15)

  • 5.167A   Additional allocation: in Indonesia and Thailand, the frequency band 50-54 MHz is also allocated to the fixed, mobile and broadcasting services on a primary basis. (WRC-15)

  • 5.168   Additional allocation: in Australia, China and the Dem. People’s Rep. of Korea, the band 50-54 MHz is also allocated to the broadcasting service on a primary basis.

  • 5.169   Alternative allocation: in Botswana, Eswatini, Lesotho, Malawi, Namibia, Rwanda, South Africa, Zambia and Zimbabwe, the frequency band 50-54 MHz is allocated to the amateur service on a primary basis. In Senegal, the frequency band 50-51 MHz is allocated to the amateur service on a primary basis. (WRC 19)

  • 5.169A   Alternative allocation: in the following countries in Region 1: Angola, Saudi Arabia, Bahrain, Burkina Faso, Burundi, the United Arab Emirates, Gambia, Jordan, Kenya, Kuwait, Mauritius, Mozambique, Oman, Uganda, Qatar, South Sudan and Tanzania, the frequency band 50-54 MHz is allocated to the amateur service on a primary basis. In Guinea-Bissau, the frequency band 50.0-50.5 MHz is allocated to the amateur service on a primary basis. In Djibouti, the frequency band 50-52 MHz is allocated to the amateur service on a primary basis. With the exception of those countries listed in No. 5.169, stations in the amateur service operating in Region 1 under this footnote, in all or part of the frequency band 50-54 MHz, shall not cause harmful interference to, or claim protection from, stations of other services operating in accordance with the Radio Regulations in Algeria, Egypt, Iran (Islamic Republic of), Iraq, Israel, Libya, Palestine*, the Syrian Arab Republic, the Dem. People’s Republic of Korea, Sudan and Tunisia. The field strength generated by an amateur station in the frequency band 50-54 MHz shall not exceed a value of +6 dB(μV/m) at a height of 10 m above ground for more than 10% of time along the borders of listed countries requiring protection. (WRC 19)

  • 5.169B   Except countries listed under No. 5.169, stations in the amateur service used in Region 1, in all or part of the 50-54 MHz frequency band, shall not cause harmful interference to, or claim protection from, stations of other services used in accordance with the Radio Regulations in Algeria, Armenia, Azerbaijan, Belarus, Egypt, Russian Federation, Iran (Islamic Republic of), Iraq, Kazakhstan, Kyrgyzstan, Libya, Uzbekistan, Palestine*, the Syrian Arab Republic, Sudan, Tunisia and Ukraine. The field strength generated by an amateur station in the frequency band 50-54 MHz shall not exceed a value of +6 dB(μV/m) at a height of 10 m above ground for more than 10% of time along the borders of the countries listed in this provision. (WRC 19)

  • 5.170   Additional allocation: in New Zealand, the frequency band 51-54 MHz is also allocated to the fixed and mobile services on a primary basis. (WRC 15)

  • 5.171   Additional allocation: in Botswana, Eswatini, Lesotho, Malawi, Mali, Namibia, Dem. Rep. of the Congo, Rwanda, South Africa, Zambia and Zimbabwe, the frequency band 54-68 MHz is also allocated to the fixed and mobile, except aeronautical mobile, services on a primary basis. (WRC 19)

Wiki entries

Access Broadband over Power Line (Access BPL)

Current Use 22–74.8 MHz Access BPL
According to the FCC's definition, Access BPL is "a carrier current system installed and operated on an electric utility service as an unintentional radiator that sends radio frequency energy on frequencies between 1.705 MHz and 80 MHz over medium voltage lines or over low voltage lines to provide broadband communications and is located on the supply side of the utility service’s points of interconnection with customer premises. Access BPL does not include power line carrier systems as defined in § 15.3(t) or In-House BPL as defined in § 15.3(gg)."

Low voltage lines are defined as lines carrying, for example, 240/120 volts from a distribution transformer to a customer's premises. Medium voltage lines carry between 1,000 and 40,000 volts from a power substation to neighborhoods, and may be overhead or underground.

Access BPL is an unlicensed service operated under Subpart G of Part 15 of the FCC's rules. Radiated emission limits from medium voltage lines in the 1.705-30 MHz range must not exceed the limits in 47 CFR 15.209, and those from 30-80 MHz must not exceed the limits in 15.109(b). Systems that operate on low voltage lines must comply with 15.109(a) limits across the entire 1.705-80 MHz range.

When Access BPL systems must use notch filters to protect licensed services, the notch must be at least 25 dB below applicable Part 15 limits in the 1.705-30 MHz band, and at least 10 dB below the limits in the 30-80 MHz band.

There are 12 sub-bands in which Access BPL systems are not allowed to operate anywhere to protect aeronautical (land) stations and aircraft receivers. Those excluded bands are listed in 15.615(f), and are excluded in the list of Access BPL bands in this entry.

Access BPL systems are not allowed to operate within the sub-band 2173.5-2190.5 kHz within 1 km of coast station facilities listed in 47 CFR 15.615(f)(2)(i), to protect the internationally-recognized standard maritime calling frequency of 2182 kHz.

No Access BPL emissions are allowed in the 73.0-74.6 MHz radio astronomy band on overhead medium voltage lines within 65 km of the Very Large Array radio telescope in New Mexico (34 04 43.5N, 107 37 03.82W), or within 47 km of the VLA on underground power lines or overhead low voltage lines.

Access BPL operators must consult at least 30 days in advance when deploying systems near various FCC field offices, aeronautical and maritime stations, radar systems, radio astronomy stations, and research areas. Details are in 47 CFR 15.615(f)(3).

Single Channel Ground and Airborne Radio System (SINCGARS)

Current Use 30–87.975 MHz
A longstanding Army portable and mobile system, operating across 30 - 87.975 MHz, is the Single Channel Ground and Airborne Radio System (SINCGARS). These radios provide frequency-hopping, secure voice, and data communications.

(Source: Wireless Spectrum Finder, by Bennett Z. Kobb. Wireless Spectrum Finder is now (c)MMX Technology LLC).

2019 World Radiocommunication Conference (WRC-19) Agenda Item 1.1

Proposed Use 50–54 MHz WRC-19 Agenda Item 1.1
1.1 to consider an allocation of the frequency band 50-54 MHz to the amateur service in Region 1, in accordance with Resolution 658 [COM6/6] (WRC-15);

Amateur Radio 6 m Band

Current Use 50–54 MHz Amateur radio 6 m band
In ITU Regions 2 and 3, this band is allocated on a primary basis to the amateur radio service. Several Region 1 countries have also adopted this band for amateur radio, but the band is formally allocated to the broadcasting service in that region. According to footnote 5.169 of the Radio Regulations, the Region 1 countries that have allocated 50-54 MHz to amateur radio are the following: Botswana, Burundi, Lesotho, Malawi, Namibia, the Dem. Rep. of the Congo, Rwanda, South Africa, Swaziland, Zambia and Zimbabwe.

According to the ITU, "this band is used for local communication at all times, including telecommand of objects such as models. Sky wave, tropospheric scatter and meteor burst propagation are used for distances up to 2000 km."

In the U.S., the ARRL has established the following band plan. The band plan may apply in other countries as well:

Frequency (MHz): Use
50.0 - 50.1: CW, beacons
50.060 - 50.080: Beacon subband
50.1 - 50.3: SSB, CW
50.10 - 50.125: DX window
50.125: SSB calling
50.3 - 50.6: All modes
50.6 - 50.8: Nonvoice communications
50.62: Digital (packet) calling
50.8 - 51.0: Radio remote control (20-kHz channels)
51.0 - 51.1: Pacific DX window
51.12 - 51.48: Repeater inputs (19 channels)
51.12 - 51.18: Digital repeater inputs
51.5 - 51.6: Simplex (six channels)
51.62 - 51.98: Repeater outputs (19 channels)
51.62 - 51.68: Digital repeater outputs
52.0 - 52.48: Repeater inputs (except as noted; 23 channels)
52.02, 52.04: FM simplex
52.2: TEST PAIR (input)
52.5 - 52.98: Repeater output (except as noted; 23 channels)
52.525: Primary FM simplex
52.54: Secondary FM simplex
52.7: TEST PAIR (output)
53.0 - 53.48: Repeater inputs (except as noted; 19 channels)
53.0: Remote base FM simplex
53.02: Simplex
53.1, 53.2, 53.3, 53.4: Radio remote control
53.5 - 53.98: Repeater outputs (except as noted; 19 channels)
53.5, 53.6, 53.7, 53.8: Radio remote control
53.52, 53.9: Simplex

WRC-19 Agenda Item 1.1

Proposed Use 50–54 MHz WRC-19 Agenda Item 1.1
"to consider an allocation of the frequency band 50-54 MHz to the amateur service in Region 1, in accordance with Resolution COM6/6 (WRC 15)"