[Elecraft] K3 diversity phase drift

Jim Brown jim at audiosystemsgroup.com
Wed Apr 8 14:55:13 EDT 2026


Interesting observation, Dave. For use in diversity reception, I don't 
see any practical problem with the drift -- the difference would only 
affect the depth of cancellation if the two ears were combined to mono. 
But diversity works by our ears getting the output of two antennas 
spaced a significant fraction of a wavelength and/or having different 
polarization and our brains listening to the one where cancellation 
between multiple arrivals is least at any given moment in time.

73, Jim K9YC

  On 4/8/2026 11:20 AM, David Gilbert via Elecraft wrote:
> The amount of the drift varies but is roughly 3 degrees in about ten 
> minutes.  It seems to be pretty steady even when the K3 has had a chance 
> to warm up, with a little bit of jitter (a few hundredths of a degree or 
> so) as it drifts.
> 
> I'm just curious what might be the source of the drift.  Any thoughts?



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