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Amateur Radio 80 m Band
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According to the ITU, "this band is used for contacts over distances of up to 500 km during the day, and for distances of 2 000 km and more at night. It is heavily used during communications emergencies."
Sometimes the upper portion of this band, which is mostly used for SSB communications, is referred to as 75 m, while the lower portion, used for CW and narrowband digital modes, is referred to as 80 m.
In the U.S., the ARRL has adopted the following band plan. The plan may apply in other countries as well. Following the band plan are the band segments that are authorized for the specified U.S. licensee classes.
ARRL BAND PLAN:
| Frequency (kHz) | Use |
| 3590 | RTTY/Data DX |
| 3570-3600 | RTTY/Data |
| 3790-3800 | DX window |
| 3845 | SSTV |
| 3885 | AM calling frequency |
Band Uses Authorized for AMATEUR EXTRA Class Licensees:
| Range (kHz) | Authorized Use(s) |
| 3500-3600 | RTTY and data |
| 3600-4000 | Phone and image |
Band Uses Authorized for ADVANCED Class Licensees:
| Range (kHz) | Authorized Use(s) |
| 3525-3600 | RTTY and data |
| 3700-4000 | Phone and image |
Band Uses Authorized for GENERAL Class Licensees:
| Range (kHz) | Authorized Use(s) |
| 3525-3600 | RTTY and data |
| 3800-4000 | Phone and image |
Band Uses Authorized for TECHNICIAN and NOVICE Class Licensees (200 W MAX):
| Range (kHz) | Authorized Use(s) |
| 3525-3600 | CW only |
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Frequency Bands |
| Band | Use | Service11 | Table |
| 3500 - 4000 kHz | Amateur Radio 80 m Band (ITU Region 2) | AM | N |
| 3500 - 3900 kHz | Amateur Radio 80 m Band (ITU Region 3) | AM | N |
| 3500 - 3800 kHz | Amateur Radio 80 m Band (ITU Region 1) | AM | N |
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