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A comment on Nokia selected by NASA to build cellular network on the moon. Parent comment

Re:Nokia selected by NASA to build cellular network on the moon by timdux on Tuesday October 20, 2020 @11:51AM (#24838823)
Yes, that's the clock holdover circuit, usually built using a OCXO or double OCXO or rubidium clock. It's good for 4 to 24 hours. Example:

[0] https://www.rakon.com/19-rak-product/rak-product-ocxo

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