[R-390] AGC operation question

[Steve Goode]

Happy New Year Everyone,

This Christmas vacation was a good one for my R-390A and me.  I finally got
the rig back together after recapping, cleaning and fixing a PTO problem.
It is working very well now.  I have a question about the normal operation
of the AGC switch.  In this radio, if I start at the slow AGC  position and
switch to the medium position, the radio is muted for about two seconds and
then slowly comes back to the proper level.  Switching between the slow and
fast positions does not exhibit this muting.  Is the muting normal in
switching between slow and medium?

Best regards,

Steve Goode, K9NG