Adam, You might already know this, but if not …
To add on to Bob’s suggestions, if you have more money than time, TAPR has some ‘divide to 1 pps’ devices: https://tapr.org/product/tadd-2-mini-pulse-per-second-divider/ And some ‘compare 1 pps devices’: https://tapr.org/product/tapr-ticc/ I have no financial connection to TAPR, except as a member (hmm, time to renew, probably). Good luck on your adventures! Sent from my iPad > On Jan 5, 2022, at 5:33 PM, Bob kb8tq <kb...@n1k.org> wrote: > > Hi > > In general, eBay is your friend for stable crystal oscillators at a > “friendly” price. Even if you buy 10 to get one, the price is still pretty > good. What you learn testing them is indeed “Time Nut Stuff”. > > Just what’s a good deal varies almost week to week. It is very much a > shop shop shop sort of thing. > > Best / quickest / easiest way to use all these gizmos: Program up a PIC > to divide them to 1 pps and go from there. > > Bob > >> On Jan 5, 2022, at 6:01 PM, Adam Space <time.isan...@gmail.com> wrote: >> >> My question is rather open ended. I'm relatively new to timing and whatnot. >> So far I have mainly dabbled in NTP, and some GPS stuff with a Raspberry Pi >> with a GPS hat. But both of these are limited to timekeeping on an actual >> computer system, but I'd like to get into some of the more hardware stuff, >> and I figured a crystal oscillator would be a good place to start. >> >> My knowledge of hardware is pretty weak, so I am unsure of how stuff works >> in this realm. For example, a quick google search shows very cheap crystal >> oscillators, like these >> <https://www.digikey.com/en/products/detail/cts-frequency-controls/MXO45-3C-10M000000/1801887>. >> But I am confused on how I could exactly use this. One thing I like about >> NTP is that I can see and compare different clocks, and synchronize them >> to time-scales like UTC, and track their performance over time. But if I >> have a crystal oscillator going, how could I compare it or adjust it to >> other clocks on my network, or to UTC for example? >> >> Or to take another example, suppose I have a few crystal oscillators like >> the one above. Is there a way I could compare them to each other, or log >> the offsets from each other, and so on? Ultimately, it would be nice to >> compare the frequency and time offsets to a reference source that is >> accurate long-term, like my GPS hat Raspberry Pi. >> >> Any ideas, suggestions, or clarifications are welcome. Additionally, if >> anyone knows of any guides (either text, video, or whatever), that would be >> great too. >> >> Adam >> _______________________________________________ >> time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an >> email to time-nuts-le...@lists.febo.com >> To unsubscribe, go to and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an > email to time-nuts-le...@lists.febo.com > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.