[Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching

[Don Wilhelm]

Dave,

Put the external reference oscillator input option on your K3 and avoid 
that situation with an external 10 MHz reference oscillator.

The K3 Reference Oscillator temperature steering is from the static 
temperature offsets.  If you have equipment to do better than the Data 
Sheet, you can determine your own values, but for those without that 
equipment, the data sheet provides a good index for various temperatures.

73,
Don W3FPR

> 
> Yes.  I'm a stickler for accuracy.  It always bothered me that the
> so-called 'temperature compensated' LO in the K3 was not actively being
> steered by temperature compensation (i.e. I could only put static
> temperature offsets into the rig memory from the data sheet that came
> with the oscillator). That was a 'feature' that was never released. At
> HF frequencies, it was only an annoyance, but using UHF transverters,
> the error compounds (I'm using a crystal oven in my UHF transverter, but
> the lack of one in the K3 caused drifting).