Brian, tis a relative drift? For Example: many use the K3 with Spectrum Lab audio software & soundcard and perform very well in measurement tests in ARRL FMT http://www.b4h.net/fmt/fmtresults201604.php
Typically turn K3 on before work on day of FMT can get within 1 hz in FMT (not always but most) The corrections (step) and wiggle can be seen on the Spectrum Lab screen but after several hours of warm up it's typically less than 1 hz If you are trying to more stability, the temperature controlled TCXO might be for you GL & 73 Robert W5AJ -----Original Message----- From: Elecraft [mailto:[email protected]] On Behalf Of brian Sent: Tuesday, June 28, 2016 9:09 PM To: [email protected] Subject: [Elecraft] K3S new synthesizer query Please correct me if I am wrong. I believe the heart of the new synthesizer is a SI-570. Great phase noise but the output frequency is quite sensitive to temperature changes. It has been observed that the corrections to bring the synthesizer in step with the master oscillator happen over longer and longer periods as the K3 warms up. It never seems to reach a point of stability even after 24 hours of warmup. Is there some kind of thermal material that one can put around the SI-570 to lengthen these periods and/or reduce it's drift? 73 de Brian/K3KO ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
