4 ms·
You can, or used to be able to, buy 5680 rubidium references recycled from cellular base stations for around USD 100, and then get a third-party interface board
by pseudohadamard 6mo ago
You can, or used to be able to, buy 5680 rubidium references recycled from cellular base stations for around USD 100, and then get a third-party interface board to deal with the weird voltage and comms requirements. Not sure if they're still available at that price.