[Elecraft] K3 Reference Oscillator

[Dave G4AON]

0.5 parts per million stability is the same specification as most HF/VHF 
rigs fitted with an optional TCXO. That equates to an error of +/- 25 Hz 
at 50 MHz. Higher stability can always be obtained at higher cost with 
an oven controlled oscillator. There is always the option of an external 
reference oscillator for those who aren't happy with a TCXO.

I have a rubidium standard in the shack that was 1 part in 10^11 high in 
frequency a couple of days ago, relative to a GPS controlled standard 
alongside it... Yet I still have a KTCXO3-1  on order for my K3 - and 
will be quite satisfied with 0.5 ppm.

A resolution to 1 Hz doesn't mean the K3 is capable of being set to an 
accuracy of 1 Hz at 50 MHz.

73 Dave, G4AON