I hope this thread dies here. In a message dated 1/19/2014 13:22:10 Pacific Standard Time, a...@comcast.net writes:
On 14-01-19 03:20 PM, Chris Albertson wrote: > My feverish brain now cranks out that all we need is a electromechanical >> WWVB receiver, thus no active electronic parts. That would be a nice little >> challenge. >> >> > That could work. I remember seeing an only World War II vintage teletype > machine. It would print test from an HF receiver. Given the technology of > the day it had no software inside > > The way it would work is you spin a disk at a nominal one rev per second > and disk has electrical contacts on it that make a bit stream. Phase lock > that with WWVB. So you control the motor speed. > > Actually I think you'd be better off using the 60KHz carrier. Again > limiting yourself to only 1940's technology, I think you could build a > local oscillator that would phase lock to WWVB's carrier, and from there > you control the motor speed and and then you use the spinning disk to > decom the bits. > My first home personal computer (1964) was the Digi-Comp, no electricity, but definitely had software. Stored program, clock, display, conditionals... In the 1930s the Norden bomb-sight had software. The Jacquard loom had software. Perhaps the "no software" requirement should be refined. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.