[Elecraft] [K2] Crystal heater for better stability???

[Don Wilhelm]

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
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