My SDR-1000 showed substantially less "WWV drift" after adding the PTC thermistor to the TCXO. Sorry, no measurements because that was before I had a GPSDO.

Mikr - AA8K


On 06/04/2017 08:13 AM, jimlux wrote:
I recall some years ago folks were talking about putting a PTC thermistor on the TCXO of a FlexRadio SDR1000 to stabilize the frequency as a sort of poor-man's OCXO.
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