Committee on Radio Astronomy Frequencies

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


Definition:

Space Research Service: A radionavigation service in which spacecraft or other objects in space are used for scientific or technological research purposes.



ITU-R Radio Regulations allocations for Region 1:

  30.005 -   30.01  MHz:	primary
  39.986 -   40.02  MHz:	secondary
  40.98  -   41.015 MHz:	secondary
 137     -  137.025 MHz:	primary (space-to-Earth) FN: 5.204 5.205 5.206
 							     5.207 5.208
 137.025 -  137.175 MHz:	primary (space-to-Earth) FN: 5.204 5.205 5.206
 							     5.207 5.208
 137.175 -  137.825 MHz:	primary (space-to-Earth) FN: 5.204 5.205 5.206
 							     5.207 5.208
 137.825 -  138     MHz:	primary (space-to-Earth) FN: 5.204 5.205 5.206
 							     5.207 5.208
 143.6   -  143.65  MHz:	primary (space-to-Earth) FN: 5.211 5.212 5.214
 400.15  -  401     MHz:	primary (space-to-Earth) FN: 5.262 5.263 5.264
 410     -  420     MHz:	secondary (space-to-space) FN: 5.268
1215     - 1240     MHz:	primary (active) FN: 5.330 5.331 5.332
1240     - 1300     MHz:	primary (active) FN: 5.282  5.330  5.331  5.332  5.334  5.335 5.335A
1370     - 1400     MHz:	secondary (passive) FN: 5.149 5.338 5.339
1400     - 1427     MHz:	primary (passive) FN: 5.340 5.341
1660.5   - 1668     MHz:	primary (passive) FN: 5.149 5.341 5.379
						      5.379A 
1668     - 1668.4   MHz:	primary (passive) FN: 5.149 5.341 5.379 5.379A 5.379B 5.379C 5.379D
2025     - 2110     MHz:	primary (Earth-to-space)(space-to-space) FN: 5.392
2110     - 2120     MHz:	primary (deep space)(Earth-to-space) FN: 5.388
2200     - 2290     MHz:	primary (space-to-Earth)(space-to-space) FN: 5.392
2290     - 2300     MHz:	primary (deep space)(space-to-Earth)
2640     - 2655     MHz:	secondary (passive) FN: 5.339 5.403 5.405 5.412 5.418 5.418B 5.418C
2655     - 2670     MHz:	secondary (passive) FN: 5.149 5.347A 5.412 5.417
							5.420 
2670     - 2690     MHz:	secondary (passive) FN: 5.149 5.347A 5.419 5.420 
2690     - 2700     MHz:	primary (passive) FN: 5.340 5.421 5.422 
3100     - 3300     MHz:	secondary (active) FN: 5.149 5.428
4950     - 4990     MHz:	secondary (passive) FN: 5.149 5.339 5.443
4990     - 5000     MHz:	secondary (passive) FN: 5.149
5250     - 5255     MHz:	primary FN: 5.447D 5.448 5.448A
5255     - 5350     MHz:	primary (active) FN: 5.448 5.448A
7145     - 7235     MHz:	primary (Earth-to-space) FN: 5.458 5.459 5.460
8400     - 8500     MHz:	primary (space-to-Earth) FN: 5.465 5.466 5.467
8550     - 8650     MHz:	primary (active) FN: 5.468 5.469 5.469A
9500     - 9800     MHz:	primary (active) FN: 5.476A  
  10.6   -   10.68  GHz:	primary (passive) FN: 5.149 5.482
  10.68  -   10.7   GHz:	primary (passive) FN: 5.340 5.483
  12.75  -   13.25  GHz:	secondary (deep space)(space-to-Earth) FN: 5.333 5.499 
  									   5.500 5.501
  13.25  -   13.4   GHz:	primary (active) FN: 5.498A 5.499
  13.4   -   13.75  GHz:	primary FN: 5.499 5.500 5.501 5.501A
  13.75  -   14     GHz:	secondary FN: 5.499 5.500 5.501 5.502 5.503
  					      5.503A
  14     -   14.25  GHz:	secondary FN: 5.505
  14.25  -   14.3   GHz:	secondary FN: 5.505 5.508 5.509
  14.4   -   14.47  GHz:	secondary (space-to-Earth)
  14.5   -   14.8   GHz:	secondary
  14.8   -   15.35  GHz:	secondary FN: 5.339
  15.20  -   15.35  GHz:	secondary (passive) FN: 5.339
  15.35  -   15.4   GHz:	primary (passive) FN: 5.340 5.511
  16.6   -   17.1   GHz:	secondary (deep space)(Earth-to-space) FN: 5.512 5.513
  17.2   -   17.3   GHz:	primary (active) FN: 5.512 5.513 5.513A
  18.6   -   18.8   GHz:	secondary (passive) FN: 5.522A 5.522C
  21.2   -   21.4   GHz:	primary (passive)
  22.21  -   22.5   GHz:	primary (passive) FN: 5.149 5.532
  23.6   -   24     GHz:	primary (passive) FN: 5.340 
  31     -   31.3   GHz:	secondary FN: 5.149 5.544 5.545
  31.3   -   31.5   GHz:	primary (passive) FN: 5.340
  31.5   -   31.8   GHz:	primary (passive) FN: 5.149 5.546
  31.8   -   32     GHz:	primary (deep space)(space-to-Earth) FN: 5.547 5.547B 5.548
  32     -   32.3   GHz:	primary (deep space)(space-to-Earth) FN: 5.547 5.547C 5.548
  34.2   -   34.7   GHz:	primary (deep space)(Earth-to-space) FN: 5.549
  34.7   -   35.2   GHz:	secondary FN: 5.549 5.550
  35.5   -   36     GHz:	primary (active) FN: 5.549 5.551A
  36     -   37     GHz:	primary (passive) FN: 5.149 
  37     -   37.5   GHz:	primary (space-to-Earth) FN: 5.547
  37.5   -   38     GHz:	primary (space-to-Earth) FN: 5.547 5.551AA
  40     -   40.5   GHz:	primary (Earth-to-space)
  50.2   -   50.4   GHz:	primary (passive) FN: 5.340 5.555A
  52.6   -   54.25  GHz:	primary (passive) FN: 5.340 5.556
  54.25  -   55.78  GHz:	primary (passive) FN: 5.557A
  55.78  -   56.9   GHz:	primary (passive) FN: 5.547 5.557
  56.9   -   57     GHz:	primary (passive) FN: 5.547 5.557
  57     -   58.2   GHz:	primary (passive) FN: 5.547 5.557
  58.2   -   59     GHz:	primary (passive) FN: 5.547 5.556
  59     -   59.3   GHz:	primary (passive)
  65     -   66     GHz:	primary FN: 5.547
  74     -   75.5   GHz:	secondary FN: 5.561
  75.5   -   76     GHz:	secondary (space-to-Earth) FN: 5.561 5.559A
  76     -   77.5   GHz:	secondary (space-to-Earth) FN: 5.149
  77.5   -   78     GHz:	secondary (space-to-Earth) FN: 5.149
  78     -   79     GHz:	secondary (space-to-Earth) FN: 5.149
  79     -   81     GHz:	secondary (space-to-Earth) FN: 5.149
  81     -   84     GHz:	secondary (space-to-Earth) FN: 5.149 5.560A
  94     -   94.1   GHz:	primary (active) FN: 5.262 5.562A
 100     -  102     GHz:	primary (passive) FN: 5.340 5.341
 105     -  109.5   GHz:	primary (passive) FN: 5.149 5.341 5.562B
 109.5   -  111.8   GHz:	primary (passive) FN: 5.340 5.341
 111.8   -  114.25  GHz:	primary (passive) FN: 5.149 5.341 5.562B
 114.25  -  116     GHz:	primary (passive) FN: 5.340 5.341
 116     -  119.98  GHz:	primary (passive) FN: 5.341
 119.98  -  120.02  GHz:	primary (passive) FN: 5.341
 120.02  -  122.25  GHz:	primary (passive) FN: 5.138
 148.5   -  151.5   GHz:	primary (passive) FN: 5.340
 155.5   -  158.5   GHz:	primary (passive) FN: 5.149 5.562B 5.562G
 164     -  167     GHz:	primary (passive) FN: 5.340
 174.8   -  182     GHz:	primary (passive)
 182     -  185     GHz:	primary (passive) FN: 5.340 5.563
 185     -  190     GHz:	primary (passive)
 190     -  191.8   GHz:	primary (passive) FN: 5.340
 200     -  202     GHz:	primary (passive) FN: 5.340 5.341 5.563A
 202     -  209     GHz:	primary (passive) FN: 5.340 5.341 5.563A
 217     -  226     GHz:	primary (passive) FN: 5.149 5.341
 226     -  231.5   GHz:	primary (passive) FN: 5.340
 235     -  238     GHz:	primary (passive) FN: 5.563A 5.563B
 250     -  252     GHz:	primary (passive) FN: 5.340 5.563A


  • CRAF observes (potential) pressure to the Radio Astronomy Service in the frequency bands:


    Last modified: June 3, 2004