[TenTec] Omni VII Auto tuner

[Richard Bell]

I have recently, like this week, acquired an Omni VII.  It is a more than adequate rig for my modest needs.
 
I have a simple question about the auto tuner.  When engaged, the tuner seems to emit some sort of buzzing and clicking (I sort of expected some noise).
 
The sound lasts just a few seconds and the TUNED indicator appears on the display.
 
Is it just me or is the noise to be expected?
 
Just so you understand where I coming from, I have not owned a radio with a auto tuner nor have I bought a new radio in over 25 years.
 
73 W5BXE