Committee on Radio Astronomy Frequencies

The Committee on Radio Astronomy Frequencies (CRAF) is a committee of the European Science Foundation (ESF).

Status of interference problems in Germany:

Radio observatories operating in Germany:

  • 73.0 - 74.6 MHz

    This band is used by the Tremsdorf Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Mobile Service applications.

  • 79.25 - 80.25 MHz

    This band is used by the Tremsdorf Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Mobile Service applications.

  • 150.05 - 153 MHz

    This band is used by the Tremsdorf Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Land Mobile-Satellite Service applications.
  • Mobile Service applications.
  • Radionavigation-Satellite Service applications.

  • 322.0 -328.6 MHz

    This band is used by the Tremsdorf Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Aeronautical Radionavigation Service applications.
  • Fixed Service applications.
  • Mobile Service applications.

  • 406.1 - 410.0 MHz

    This band is used by the radio observatories at Effelsberg and Tremsdorf:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Mobile Service applications.

  • 608.0 - 614.0 MHz

    This band is used by the radio observatories at Effelsberg and Tremsdorf:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Broadcasting Service applications.

  • 1330.0 - 1400.0 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Aeronautical Radionavigation Service applications.
  • Fixed Service applications.
  • Mobile Service applications.
  • Radiolocation Service applications.

  • 1400.0 - 1427.0 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 1610.6 - 1613.8 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Mobile Satellite Service applications.
  • Aeronautical Radionavigation Service applications.

  • 1660.0 - 1670.0 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Land Mobile-Satellite Service applications.
  • Meteorological Aids Service applications.

  • 1718.8 - 1722.2 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Mobile Service applications.

  • 2655.0 - 2690.0 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Aeronautical Radionavigation Service applications.
  • Broadcasting Satellite Service applications.
  • Fixed Service applications.
  • Mobile Service applications.

  • 2690.0 - 2700.0 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Aeronautical Radionavigation Service applications.
  • Broadcasting Satellite Service applications.
  • Fixed Service applications.
  • Mobile Service applications.

  • 3260.0 - 3267.0 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Radiolocation Service applications.

  • 3332.0 - 3339.0 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Radiolocation Service applications.

  • 3345.8 - 3352.5 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Radiolocation Service applications.

  • 4800.0 - 4990.0 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 4990.0 - 5000.0 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 6650.0 - 6675.2 MHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Fixed-Satellite Service applications.
  • Mobile Service applications.

  • 10.6 - 10.7 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference. The observatory had to construct heavy filtering against this interference. The result is that it cannot use the whole band allocated to the Radio Astronomy Service with a primary exclusive status for passive frequency use.

    Reason:

  • Fixed Satellite Service applications in the band 10.714 GHz - 10.79 GHz causes out-of-band emission in the upper part of the band allocated to the Radio Astronomy Service (see GDL-6/ASTRA-1D satellite).

  • 14.47 - 14.50 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable.

    Reason:

  • Fixed Satellite Service applications.

  • 15.35 - 15.40 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable.

    Reason:

  • Fixed Service applications.
  • Fixed Satellite Service applications.
  • Mobile Service applications.

  • 22.01 - 22.21 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: but pressure by active spectrum applications giving rise to threat of severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Mobile Service applications.

  • 22.21 - 22.50 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: but pressure by active spectrum applications giving rise to threat of severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Mobile Service applications.

  • 22.81 - 22.86 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: but pressure by active spectrum applications giving rise to threat of severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Mobile Service applications.

  • 23.07 - 23.12 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: but pressure by active spectrum applications giving rise to threat of severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Mobile Service applications.

  • 23.60 - 24.00 GHz

    This band is used by the Effelsberg Radio Observatory:

  • Information not yet available.

  • 31.2 - 31.8 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable.

    Reason:

  • Radionavigation Service applications.

  • 36.43 - 36.5 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable.

    Reason:

  • Radionavigation Service applications.

  • 42.5 - 43.5 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: but pressure by active spectrum applications giving rise to threat of severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Fixed-Satellite Service applications.
  • Mobile Service applications.

  • 47.2 - 50.2 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: but pressure by active spectrum applications giving rise to threat of severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Fixed-Satellite Service applications.
  • Mobile Service applications.

  • 76.0 - 77.5 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 77.5 - 78 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 78 - 79 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 79 - 81 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 81 - 84 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 84 - 86 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 86 - 92 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 92.0 - 94.0 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 94.0 - 94.1 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 94.1 - 95.0 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 95.0 - 100.0 GHz

    This band is used by the Effelsberg Radio Observatory:

    Radio astronomical quality of the band:

  • good.

    Other frequency bands used by the Radio Astronomy Service in Germany:

    by the Tremsdorf Radio Observatory:

  • 40 - 100 MHz
  • 100 - 170 MHz
  • 200 - 400 MHz
  • 400 - 800 MHz

    Last modified: February 16, 2005