[Elecraft] Help with K3S upgrades

[Edward R Cole]

(Sorry but could not resist)

I have my K3 with TCXO03 and EXREF referenced to 10-MHz (OCXO +/- 5 
E-12) and check it with my EIP538 Counter with ext ref to a +/- 5 
E-11 Rubidium.
Then transmit and check frequency - done!  At 28-MHz I am usually 
within 2-Hz (and obviously that gets better at lower frequencies).
http://www.kl7uw.com/Rubidium.htm
http://www.kl7uw.com/K3EXREF.htm

WWV signal not strong enough or reliable, here.  Rubidium only beat 
by GPSDO as reference.

Not your usual HF station equipment, but then I mostly do VHF - mw.

73, Ed - KL7UW
   http://www.kl7uw.com
Dubus-NA Business mail:
   dubususa at gmail.com