Metricom Ricochet used dual-band radios, operating in 900MHz and 2.4GHz, to form a routable mesh that delivered internet access and other services, in 1999.

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stavros 9 hours ago | parent [-]

Ah, thanks, I didn't find any reference to that from a search (found a messaging app).

	▲	hedgehog 9 hours ago \| parent [-]
		They used repeaters on street lights as part of the infrastructure, and even after the company went belly up people were able to use the repeaters for private networks. Pretty slick for the mid 90s.