The Committee on Radio Astronomy Frequencies (CRAF) is an Expert Committee of
the European Science Foundation (ESF).
470 - 790 MHz: BROADCASTING 5.149 5.291A 5.294 5.296 5.300 5.302 5.304 5.306 5.311A 5.312
The Radio Astronomy Service has a primary allocation in Region 2.
Astrophysical importance of the band 608 - 614 MHz
|System Sensitivity (noise fluctuations)||Threshold Interference Levels|
|Temperature||Power Spectral Density||Input Power||Power Flux Density||Spectral Power Flux Density|
|Single Dish||0.73 mK||-260 dB(WHz-1)||-202 dBW||-185 dB(Wm-2)||-253 dB(Wm-2Hz-1)|
For further details the reader is referred to ITU-R Recommendation RA769. It should, however, be noted that the observed spectral power flux densities are much lower than the harmful interference levels because they are made in the main beam of the radio astronomy antennas whereas the harmful levels correspond to reception in the sidelobes, i.e. the differences are related to the gain of the antennas. The differences can be of the order of 50 to 80 dB W m-2 Hz-1 (see ITU-R "Handbook on Radio Astronomy", 1995/2003, chapter 4).
In Europe, the band 608 - 614 MHz is used by the Radio Astronomy Service in:
Sharing problems with the following services:
Out-of-band emission from the following services: