The reason for this page
I built this page, because it's hard to tell sometimes what ham radio operators need to do when operating in certain band segments, since many of the frequencies allocated to the ham bands, are also used for other things. By placing this list here, I'm hoping to help hams find band segments that aren't as cluttered, or just letting them know where there shouldn't be any interference from other services.
The table below lists bands that are partly or completely for the exclusive use of amateur radio users, making
it easier to tell when/if you're operating in segments that may have interference from other services.
All of the frequencies listed here are frequencies that belong to the amateur radio service, but are not listed
in the FCC rules as being shared with any other service, so should be free of interference from those other
services.
You of course should always check for yourself to verify you are operating within legal frequencies for your
license class before using these frequencies.
The bands that have an asterisk (*) in front of them are bands where part of the band is required to be
shared. The frequencies listed are those that belong exclusively to the ham radio community.
The bands that are completely shared by the ham community with other services are left out of this table to avoid confusion.
| band | frequency range |
|---|
| 160M | 1800-2000 KHZ |
| 80M | 3.500-3.600 MHZ |
| *75M | 3.600-3.6500 MHZ |
| *40M | 7.000-7.300 MHZ |
| *30M | 10.100-10.150 MHZ |
| 20M | 14.000-14.350 MHZ |
| 17M | 18.068-18.168 MHZ |
| 15M | 21.000-21.450 MHZ |
| 12M | 24.890-24.990 MHZ |
| 10M | 28.000-29.700 MHZ |
| 6M | 50-54 MHZ |
| 2M | 144-148 MHZ |
| *1.25M | 222-225 MHZ |
| *1.2 CM | 24.00-24.05 GHZ |
| 6 MM | 47.0-47.2 GHZ |
| *2 MM | 134-136 GHZ |
| *1.2 MM | 2400-2405 GHZ |
| *1 MM | 248-250 GHZ |
above 275 GHZ
These frequencies are picked out of the FCC rule 47 part 97 specifically section 97.303, and are presented here for simplicity for anyone looking to experiment with frequencies above 275 GHZ.
The frequencies listed are (as best as I can determine) ones that are not listed in the fcc rules requiring amateur radio operators to share the spectrum for these segments. Of course, the best practice is to assume others are using the frequencies, and check them before running experiments.
Also, the upper and lower bounds of these ranges are the upper/lower frequency ranges for the frequencies amateurs are required to share, so if you're looking for uninterrupted transmissions, you probably want to move away from the edges of the zones listed here.
Frequencies are listed in GHZ ranges.
- 510-523
- 527-538
- 581-611
- 711-713
- 718-729
- 733-750
- 754-771
- 776-795
- 909-926
- 945-951
- 956-968
- 973-985
- 990-1000
Any corrections to this list should be sent to my ham radio address