"Bingo" wrote
I noticed (finally) that the Pro-95 has global and channel
attenuation.

I followed the instructions in the manual and turned off
global attenuation. Now during scan the ATT- appears on line
four of the display.

Was global attenuation on by default?

Did I do myself a favor or not?
__
When you put on 'Global ATT' you simply apply ATT 'on/off' to ALL
channels, which disregards INDIVIDUAL channel ATT assignments
you may have had.
If your pro-95 shows ATT- on line 4, ATT is OFF on all channels.
If you now press ATT, it will display ATTon, and ATT applies to ALL
channels.
I live about 100 feet away from several cell towers, so I have to have
ATT on on most 800MHz trunking and non-trunking channels,
otherwise I get a strong buzz-like interference. Of course there are
a few other frequencies that need the ATT applied as well.
When I take the scanner in my car, I activate Global ATT, which
removes all ATT assignments to various channels. -Ron