[Elecraft] Re: K3 question--TCXO or another filter?

[Dave G4AON]

The difference between TCXOs is 4ppm not 4 Hz. The standard TCXO can be 
+/- 250 Hz at 50 MHz, the optional one can be +/- 50 Hz at 50 MHz or 
perhaps +/- 25 Hz once the firmware is changed to allow the supplied 
calibration table to be used. Using the optional 1ppm TCXO in my K3 
results in a typical accuracy of within 20 Hz at 50 MHz, under normal 
shack temperatures. I run a home brew GPS derived standard for 
calibration purposes.

The K3 is one of the few transceivers that can be adjusted for frequency 
without taking a cover off or needing a trim tool, it can be easily 
calibrated every hour, every day or whatever - if that's what floats 
your boat. Whether you need the higher accuracy is only something you 
and your wallet can decide.

73 Dave, G4AON
K3/100 #80
-----------------
"The average user won't notice the +/- 4Hz
improvement"