[Elecraft] K3 strange behaviour

[a.yoshida]

Hi all

I enjoyed CQ WPX contest with K3/5w.
I found strange behaviour on 15m band during about 10 min after K3 power on.

K3 is almost dead in receive just like squelch on when I turn main dial.
It is alive again when I turn main dial higher or lower about a few KHz.
It happens regardless mode. (I noticed in CW and SSB)
I have never seen this behaviour before and do not know if it also happens
on other band or not.

Anyone see this ?

MCU 1.96
DSP 1.73

73 de aki, ja1nlx