Mike, I don't know what kind of stability you are trying to achieve, but the PLL crystal would be the only one to consider. The 4 MHz crystal is not used dynamically for any frequency determination - it must be set accurately and used for the short term running of CAL PLL and CAL FIL, but after that it can drift a lot and not create any drift of the K2. The K2 takes DAC values out of EEPROM and applies those to the PLL Reference oscillator and the BFO during normal operation. The frequency will be as stable as those oscillators.
73, Don W3FPR Mike-WE0H wrote: > Has anyone added a crystal heater to their K2? If I would add a heater > to my K2, what oscillator would be the best one to do it to or should I > heat both the 4mc & the 12.xx mc crystals? The radio is decent as is but > I am used to zero drift when I work the Part 5 Experimental bands with > my other radio's. I want to make my K2 very stable as it will be used on > those bands. > > Many thanks, > Mike > WE0H > K2 6698 > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.0.238 / Virus Database: 270.11.28/2022 - Release Date: 03/25/09 > 07:16:00 > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
