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
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