Band Plan
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Unlicensed Spectrum (USA only)
- 5.160 to 5.850 GHz - Unlicensed
- 5.925 to 7.125 GHz - Unlicensed (WiFi 6E)
San Francisco / Oakland / Berkeley
| Channel | Width (MHz) | Purpose | Notes |
|---|---|---|---|
| 171 | 10 | Cross Bay | |
| 173 | 20 | Richmond / Berkeley / Oakland / Hayward | We should probably be using 174 to avoid overlap with 171 (see here) |
| 175 | 10 | Mount Diablo | |
| 177 | 10 | Oakland / Berkeley | |
| 179 | 10 | SFWEM | |
| 181 | 10 | NALCO | |
| 183 | 10 | NALCO |
Notes
I confess that I don't understand how a band plan should work in a wifi network when we have a combination of tight point-to-point links with beam widths of 7° (beam diameter is ~1/8 the beam distance) with sectors with beam widths of 120° (beam diameter is ... massive).
San Carlos / San Bruno
| Channel | Width (MHz) | Purpose | Notes |
|---|---|---|---|
| 171 | 10 | ||
| 173 | 10 | ||
| 175 | 10 | ||
| 177 | 10 | ||
| 179 | 10 | ||
| 181 | 10 | ||
| 183 | 10 |
Redwood City / Belmont
| Channel | Width (MHz) | Purpose | Notes |
|---|---|---|---|
| 171 | 10 | ||
| 173 | 10 | ||
| 175 | 10 | ||
| 177 | 10 | ||
| 179 | 10 | ||
| 181 | 10 | ||
| 183 | 10 |
Mountain View / Sunnyvale / Palo Alto
| Channel | Width (MHz) | Purpose | Notes |
|---|---|---|---|
| 171 | 10 | ||
| 173 | 10 | ||
| 175 | 10 | ||
| 177 | 10 | ||
| 179 | 10 | ||
| 181 | 10 | ||
| 183 | 10 |
Comments
Channels are defined to be 5 MHz wide, reaching 2.5 MHz above and below their center frequency. Most channels used by BAM are 10 MHz wide, so +/- 5MHz of their center frequency. This means we only use odd channel numbers as 10 MHz channels overlap with even channels.
20 MHz channels extend +/- 10 MHz. This mean the partially or completely overlap with two channels above and below.