[Elecraft] Minor problem or K2 design quirk?

[Ken Bessler]

For the last 6 months, K2 #4913 has performed almost flawlessly - almost. 
Several times, I've returned to the shack and turned up the AF gain to find 
that the XFIL setting had changed.

See, I never turn 4913 off - I just put all the controls and filters to a 
default setting, stow the
mic and paddles then turn the AF gain down all the way. It's an old 
habit....

So, I come back to the shack to find XFIL set to 1 yet the rx audio is very 
narrow. Cycling through
the XFIL selections, returning to #1, restores the audio. This has happened 
about 4 or 5 times
since March.

Anyone with a guess?

Ken KG0WX
K2 #4913, XG2,
Tenna Dipper, HLA-150

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