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Old August 1st 17, 12:00 PM posted to uk.radio.amateur,uk.rec.models.engineering,rec.radio.amateur.homebrew
Gareth's Downstairs Computer Gareth's Downstairs Computer is offline
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First recorded activity by RadioBanter: Mar 2017
Posts: 209
Default A mechanical phase locked loop!

Continuing my googling following last night's
BHI lecture, and following up on the Shortt
and Hope-jones clocks, here is a mechanical
phase locked loop, and in Meccano! ...

http://www.meccanotec.com/shortt.html