What you experienced is not a bug.  Do you turn off your PC by unplugging 
it?

The K3 has a CPU in it, and in order to clean up and go to a power down 
state, it needs to be RUNNING to stage itself down. Ever try unloading the 
groceries the car while it's rolling away from you?  Put yourself in the 
mind of the CPU, who has detected that the power is going down, and now 
trying to clean up while the circuits go dead, trying to remember the last 
state, and the disappearing DC has rendered the memory erratic containing 
the bits in question.

The worst kind of computer interruption around here is a power hit, which 
can go down in ways that leave circuits in indeterminate states.  We have 
UPS on our two main PC's, just so the PC's can do an orderly shutdown. But 
there are all the boxes (washer, dryer, TVs, Microwaves, clock radios) that 
have CPUs in them and sometimes come up quite wierd depending on the timing 
of the hit.

It's a new world.  Hit the K3 power button (it sends a signal to the CPU, 
doesn't break the DC) and let the K3 clean up before it turns itself off in 
an orderly fashion.

73, Guy.

----- Original Message ----- 
From: "Erik N Basilier" <ebasil...@cox.net>
To: <elecraft@mailman.qth.net>
Sent: Sunday, March 01, 2009 12:58 AM
Subject: [Elecraft] K3 power loss: Last settings forgotten


>I just shut down the station by "pulling the big switch" and then turned it
> back on soon after. Of course I had to push the power button on the K3 to
> get it going again. Then I noticed what I never noticed before: The K3,
> while still tuned to the same 40m cw frequency, came up in LSB mode, with
> coarse frequency display. I pushed FINE and MODE DOWN to get back to cw 
> and
> two decimals. Then I shut down the same way again, with the same result.
> Next time I powered down by pushing the K3 power button instead of the Big
> Switch. This time when I powered the K3 on again it remembered all 
> settings.
> Looks to me like the K3 doesn't store all settings unless its power switch
> is pushed to shut down. Is this how it is supposed to work? I am running
> 2.76.
>
> 73,
> Erik K7TV
>
>
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