Tom Van Baak <[email protected]> writes: > An email came in asking if it was possible to improve the performance > of a TCXO if one monitors the temperature of the PCB or enclosure and > then applies timekeeping corrections in s/w based on that data. I > don't have specific P/N or other details so treat this as a generic > question. Has anyone tried this?
Elecraft does this in the KX3 (ham radio). Basically, the oscillator has a calibration value anyway, and this makes it a function of temperature. Reports are that stability is much improved, particularly for situations involving 2-minute transmissions and heating of the power amplifier, with unavoidable thermal coupling to the oscillator, given the low mass and size of the radio. https://ftp.elecraft.com/KX3/Mod%20Notes%20Alerts/KX3%20Custom%20VFO%20TC%20rev%20A9.pdf However, I'm not sure if the base oscillator counts as TCXO. This scheme is of course lower power than putting an oven in the KX3. Their larger radio (K3) has a better TCXO to start with, an option for an OCXO, and an option for 10 MHz in. But the KX3 is focused on adequate performance with very lower power/size/weight. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
