Band Plan

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List of WiFi channels.

San Francisco / Oakland / Berkeley

Channel Width (MHz) Purpose Notes
171 10 Cross Bay
173 20 Richmond / Berkeley / Oakland / HWD 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.