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 Turkey:

Radio observatory operating in Turkey:

  • 1330.0 - 1400.0 MHz

    This band is used by the Kayseri 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 Kayseri Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 1610.6 - 1613.8 MHz

    This band is used by the Kayseri 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 Kayseri 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 Kayseri 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 Kayseri 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 Kayseri 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 Kayseri 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 Kayseri 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 Kayseri 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 Kayseri Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 4990.0 - 5000.0 MHz

    This band is used by the Kayseri Radio Observatory:

    Radio astronomical quality of the band:

  • good.

  • 6650.0 - 6675.2 MHz

    This band is used by the Kayseri 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 Kayseri 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 Kayseri Radio Observatory:

    Radio astronomical quality of the band:

  • reasonable.

    Reason:

  • Fixed Satellite Service applications.

    Other frequency bands used by the Kayseri Radio Observatory:

  • 1 - 15 GHz
    Last modified: November 4, 2004