I'm not really concerned about on the air privacy because it would not
be used for private conversation.

I see nothing wrong with wanting a private call sign though. I used to
chat with friends on the cb and there were some very questionable people
there. There are also a lot of ham radio operators like this but they
behave slightly better on the air and a call sign is pretty much just a
abbreviation for your home address and phone number.

As I tried to explain in my question I just wanted a way to mute my
radio until a specific person calls me and then have the radio on so I
can hear everyone. I guess this is not possible through a repeater.

This is not another "dig" at hames. I am amazed at what some hams have
done by constructing their own equipment from the ground up and their
quest for electronics and radio knowledge.

thanks for your time