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This model has band 7 but is missing 12, 13, and/or 71 (as per discussion from Nathan in #rpi-interface-rev-c). Band 7 is (1) limited to certain networks and (2) is 2600MHz, which is fast, but limits ranged performance. 12, 13, and 71 are lower frequency channels and will provide more channels to switch into, as well as better range.
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