[Elecraft] KXBC3 clock drift

[Don Wilhelm]

Erik,

If you want to experiment with trimming the oscillator for the clock, 
you can try varying the capacitance of C7 and C8 on the KXBC3 option board.

Nominal capacitor values are +/- 5%, so you may be able to find suitable 
capacitors that vary a bit from the nominal 15pF value that will set 
your RTC "right on".  A few pF either side will likely make a 
significant difference.

Again, a bit of experimentation will be in order to get it exactly 
correct.  The actual capacitor value can vary from the nominal value by 
0.75pF and still be in-spec, so only add/subtract a bit at a time.

Monitoring the results over a long time period can be tedious work, but 
if you want it "spot on", it may be worth the effort for you.

73,
Don W3FPR

On 8/29/2016 6:05 PM, etksubs at gmail.com wrote:
> I was just wondering if it was a one-off issue, and/or if there was a possibility of correcting the issue in any way.
>