§ 2.107   Radio astronomy station notification.

   (a) Pursuant to No. 1492 of Article 13 and Section F of Appendix 3 to
   the international Radio Regulations (Geneva, 1982), operators of radio
   astronomy stations desiring international recognition of their use of
   specific radio astronomy frequencies or bands of frequencies for
   reception, should file the following information with the Commission
   for inclusion in the Master International Frequency Register:

   (1) The center of the frequency band observed, in kilohertz up to
   28,000 kHz inclusive, in megahertz above 28,000 kHz to 10,500 MHz
   inclusive and in gigahertz above 10,500 MHz.

   (2) The date (actual or foreseen, as appropriate) when reception of the
   frequency band begins.

   (3) The name and location of the station, including geographical
   coordinates in degrees and minutes.

   (4) The width of the frequency band (in kHz) observed by the station.

   (5) The antenna type and dimensions, effective area and angular
   coverage in azimuth and elevation.

   (6) The regular hours of reception (in UTC) of the observed frequency.

   (7) The overall receiving system noise temperature (in kelvins)
   referred to the output of the receiving antenna.

   (8) The class of observations to be taken. Class A observations are
   those in which the sensitivity of the equipment is not a primary
   factor. Class B observations are those of such a nature that they can
   be made only with advanced low-noise receivers using the best
   techniques.

   (9) The name and mailing address of the operator.

   (b) The permanent discontinuance of observations, or any change to the
   information above, should also be filed with the Commission.

   (c) Observations being conducted on frequencies or frequency bands not
   allocated to the radio astronomy service should be reported as in
   paragraph (a) of this section for information purposes. Information in
   this category will not be submitted for entry in the Master
   International Frequency Register and protection from interference will
   not be afforded such operations by stations in other services.

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