[Elecraft] K3 intermittently "forgets" last used mode when returning to a band

[jkhooper at rockisland.com]

Dear fellow Elecraft fans, 

When I change bands on my K3 with the front BAND button, my K3 sometimes “forgets” the last used mode on a band that I might return to.   For example, when switching to 40 m from a higher band, I sometimes look over at my K3 display and see “USB” mode selected for 40 m rather than “LSB”.   When going from 40 m to 20 m, I sometimes see “LSB” selected for 20 m rather than “USB”.    

I have my K3 connected to my Mac and run a logging program which can control the K3, but I have experienced this behavior even when the logging program was not running.   

Happens so seldom that it doesn’t bother me at all … though if I am not hearing anyone clearly I look over to see which mode is showing on the display.  

Any hypotheses on what might be happening?  

73, 
Hoop
K9QJS 
San Juan Island, WA