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> I don't think I ever saw a card supporting 802.11a exclusively, it was part of a chip supporting multiple standards. And then you would always use 802.11g.

This ignores the historical fact that 802.11a cards predate 802.11g by multiple years - A-only cards were available in 2001 when the initial draft of the G standard was announced.

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I'm talking about the year 2003 in Spain. Perhaps I should have mentioned it.

802.11g was still a draft. There were serious issues to use cards from different vendors to talk to each other, and 802.11b cards were common.

Anyway, 802.11a frequency didn't play well with walls (or other solids), added to the shorter range compared with 802.11b (and g), in 2003 b was king and g was introduced early because of the higher speed.

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