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 Spain:

Radio observatories operating in Spain:

  • 1610.6 - 1613.8 MHz

    This band is used by the Pico Veleta Radio Observatory, the Robledo Radio Observatory and the Yebes 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 Pico Veleta Radio Observatory, the Robledo Radio Observatory and the Yebes 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 Pico Veleta Radio Observatory, the Robledo Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable: often severe degradation by harmful interference.

    Reason:

  • Fixed Service applications.
  • Mobile Service applications.

  • 22.01 - 22.21 GHz

    This band is used by the Robledo Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good: 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 Robledo Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good: 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 Robledo Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good: 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 Robledo Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good: 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 - 24.0 GHz

    This band is used by the Robledo Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 42.5 - 43.5 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good: 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 Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good: 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 Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 77.5 - 78 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 78 - 79 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 79 - 81 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 81 - 84 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 84 - 86 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 86.0 - 92.0 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 92.0 - 94.0 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 94.0 - 94.1 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 94.1 - 95.0 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 95.0 - 100.0 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 100.0 - 102.0 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 102.0 - 105.0 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 105.0 - 109.5 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 109.5 - 111.8 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 111.8 - 114.25 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 114.25 - 116 GHz

    This band is used by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 123 - 126 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 126 - 130 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 130 - 134 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 134 - 136 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 136 - 141 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 141 - 148.5 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 148.5 - 151.5 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 151.5 - 155.5 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 155.5 - 158.5 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 164 - 167 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 168 - 170 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 170 - 174.5 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 182 - 185 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 191.8 - 200 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 200 - 202 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 202 - 209 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 209 - 217 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 217 - 226 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 226 - 231.5 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 241 - 248 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 248 - 250 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 250 - 252 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 252 - 265 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 265 - 275 GHz

    This band is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 275 - 1000 GHz

    This frequency range is used by the Pico Veleta Radio Observatory:

    Radio astronomical quality of the band:

  • good.

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

    by the Robledo Radio Observatory and the Yebes Radio Observatory:

  • 2215 - 2240 MHz: geodetic VLBI

  • 2290 - 2300 MHz: VLBI (VLBA)

  • 8208 - 8313 MHz: geodetic VLBI

  • 8387 - 8443 MHz: VLBI (VLBA)

  • 8498 - 8573 MHz: geodetic VLBI

    by the Robledo Radio Observatory:

    18 - 26 GHz

    by the Yebes Radio Observatory:

  • 6.0 - 6.1 GHz

  • 29 - 37 GHz: VLBI

    by the Pico Veleta Radio Observatory and the Yebes Radio Observatory:

  • 43.5 - 47.0 GHz

    Last modified: February 16, 2005