Frequency Bands / ITU RR table: 1 610-1 660 MHz

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ITU RR table: 1 610-1 660 MHz

1.61 – 1.66 GHz WRC-27 AI

The L-band MSS uplink and radionavigation satellite band, used by LEO satellite constellations including Iridium (1616–1626.5 MHz) and Globalstar (1610–1618.5 MHz). It also hosts radio astronomy allocations protecting the OH spectral line at 1612 MHz — an internationally recognised quiet zone for passive sensing.

On the WRC-27 agenda

This band — or part of it — is under study for the 2027 World Radiocommunication Conference. The agenda items below address it:

AI 1.11 to consider the technical and operational issues, and regulatory pr... WP 4C AI 1.12 to consider, based on the results of studies, possible new allocati... WP 4C AI 1.13 to consider studies on possible new allocations to the mobile-satel... WP 4C
Overview Timeline Footnotes Countries Learn

Primary uses

Mobile satellite LEO (Iridium, Globalstar — uplink); radionavigation satellite (GNSS); radio astronomy (OH line, 1612 MHz — passive); aeronautical radionavigation

Frequency Allocation Table

RR 2024

Region 1

1.61 – 1.6106 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION

1.6106 – 1.6138 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) RADIO ASTRONOMY AERONAUTICAL RADIONAVIGATION

1.6138 – 1.62135 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Mobile-satellite (space-to-Earth)

1.62135 – 1.6265 GHz

MARITIME MOBILE-SATELLITE (SPACE-TO-EARTH) MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Mobile-satellite (space-to-Earth) except maritime mobile satellite (space-to-Earth)

1.6265 – 1.66 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE)

Region 2

1.61 – 1.6106 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE)

1.6106 – 1.6138 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) RADIO ASTRONOMY AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE)

1.6138 – 1.62135 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE) Mobile-satellite (space-to-Earth)

1.62135 – 1.6265 GHz

MARITIME MOBILE-SATELLITE (SPACE-TO-EARTH) MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE) Mobile-satellite (space-to-Earth) except maritime mobile satellite (space-to-Earth)

1.6265 – 1.66 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE)

Region 3

1.61 – 1.6106 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Radiodetermination-satellite (Earth-to-space)

1.6106 – 1.6138 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) RADIO ASTRONOMY AERONAUTICAL RADIONAVIGATION Radiodetermination-satellite (Earth-to-space)

1.6138 – 1.62135 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Mobile-satellite (space-to-Earth) Radiodetermination-satellite (Earth-to-space)

1.62135 – 1.6265 GHz

MARITIME MOBILE-SATELLITE (SPACE-TO-EARTH) MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Mobile-satellite (space-to-Earth) except maritime mobile satellite (space-to-Earth) Radiodetermination-satellite (Earth-to-space)

1.6265 – 1.66 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE)
RR 2020

Region 1

1.61 – 1.6106 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION

1.6106 – 1.6138 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) RADIO ASTRONOMY AERONAUTICAL RADIONAVIGATION

1.6138 – 1.62135 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Mobile-satellite (space-to-Earth)

1.62135 – 1.6265 GHz

MARITIME MOBILE-SATELLITE (SPACE-TO-EARTH) MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Mobile-satellite (space-to-Earth) except maritime mobile satellite (space-to-Earth)

1.6265 – 1.66 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE)

Region 2

1.61 – 1.6106 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE)

1.6106 – 1.6138 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) RADIO ASTRONOMY AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE)

1.6138 – 1.62135 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE) Mobile-satellite (space-to-Earth)

1.62135 – 1.6265 GHz

MARITIME MOBILE-SATELLITE (SPACE-TO-EARTH) MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE) Mobile-satellite (space-to-Earth) except maritime mobile satellite (space-to-Earth)

1.6265 – 1.66 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE)

Region 3

1.61 – 1.6106 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Radiodetermination-satellite (Earth-to-space)

1.6106 – 1.6138 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) RADIO ASTRONOMY AERONAUTICAL RADIONAVIGATION Radiodetermination-satellite (Earth-to-space)

1.6138 – 1.62135 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Mobile-satellite (space-to-Earth) Radiodetermination-satellite (Earth-to-space)

1.62135 – 1.6265 GHz

MARITIME MOBILE-SATELLITE (SPACE-TO-EARTH) MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Mobile-satellite (space-to-Earth) except maritime mobile satellite (space-to-Earth) Radiodetermination-satellite (Earth-to-space)

1.6265 – 1.66 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE)
RR 2016

Region 1

1.61 – 1.6106 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION

1.6106 – 1.6138 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) RADIO ASTRONOMY AERONAUTICAL RADIONAVIGATION

1.6138 – 1.6265 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Mobile-satellite (space-to-Earth)

1.6265 – 1.66 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE)

Region 2

1.61 – 1.6106 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE)

1.6106 – 1.6138 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) RADIO ASTRONOMY AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE)

1.6138 – 1.6265 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE) Mobile-satellite (space-to-Earth)

1.6265 – 1.66 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE)

Region 3

1.61 – 1.6106 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Radiodetermination-satellite (Earth-to-space)

1.6106 – 1.6138 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) RADIO ASTRONOMY AERONAUTICAL RADIONAVIGATION Radiodetermination-satellite (Earth-to-space)

1.6138 – 1.6265 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Mobile-satellite (space-to-Earth) Radiodetermination-satellite (Earth-to-space)

1.6265 – 1.66 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE)
RR 2008

Region 1

1.61 – 1.6106 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION

1.6106 – 1.6138 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) RADIO ASTRONOMY AERONAUTICAL RADIONAVIGATION

1.6138 – 1.6265 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Mobile-satellite (space-to-Earth)

1.6265 – 1.66 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE)

Region 2

1.61 – 1.6106 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE)

1.6106 – 1.6138 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) RADIO ASTRONOMY AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE)

1.6138 – 1.6265 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION RADIODETERMINATION-SATELLITE (EARTH-TO-SPACE) Mobile-satellite (space-to-Earth)

1.6265 – 1.66 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE)

Region 3

1.61 – 1.6106 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Radiodetermination-satellite (Earth-to-space)

1.6106 – 1.6138 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) RADIO ASTRONOMY AERONAUTICAL RADIONAVIGATION Radiodetermination-satellite (Earth-to-space)

1.6138 – 1.6265 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE) AERONAUTICAL RADIONAVIGATION Mobile-satellite (space-to-Earth) Radiodetermination-satellite (Earth-to-space)

1.6265 – 1.66 GHz

MOBILE-SATELLITE (EARTH-TO-SPACE)