Richard Laager writes: > I stumbled across this product listing: > https://www.teradak.com/products/115.html
That site red-zones my BS detector… > It's a Pi hat that contains two TCXOs, one at 19.2 MHz for the CPU and > one at 25 MHz for the Ethernet controller. The one for the Ethernet controller is useless even for the seemingly intended application. Replacing the main crystal with a TCXO may or may not help NTP performance depending on how much temperature effects are currently dominating it. > It's a rather permanent modification, as you have to desolder the > stock crystals and replace them with wires going to the hat. I'm not > 100% sure how to order the hat yet, but they gave a price of $46 (USD) > via email. You'd be much better off taking not of the injection point and then use a GPS timing module that can produce a clean 19.2MHz clock. I still have that way down on my to-do list; although I was going to try and inject the clock without actually desoldering the crystal so it would still work even when the GPS module doesn't provide a clock. Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ DIY Stuff: http://Synth.Stromeko.net/DIY.html _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
