[Elecraft] Clock Accuracy

[Wayne Burdick]

Hi John,

The clock's accuracy is typically +/- 2 seconds per day. If that  
doesn't suffice for a long trip, and you don't have a timepiece to  
correlate it to, you could attempt to adjust the frequency of the  
clock crystal closer to 32768 Hz. This usually requires some long-term  
experimentation. Putting a frequency counter on the crystal will load  
it down unless you have a very low-C FET probe.

There's a capacitor connected to the crystal that can be adjusted in  
value slightly without impacting the oscillator. It's easy to slow the  
clock down; just parallel a small amount of additional capacitance.  
Speeding it up requires a decrease in capacitance, which means  
removing a surface mount capacitor first. Let me know if you need  
advice on how to do this.

73,
Wayne
N6KR