Tricia, so in addition to NOT seeing either a "G" or "A" or "GA" on your screen ...
It's one thing to have the Global mode on or off and another to have an object attenuated, etc.
Also, tell us where your squelch setting is ? I point mine to my imaginary Pro-107 belt clip (11 o'clock)
Go exchange your (200-0006) center loaded telescoping antenna for the (200-0283) 800 Mhz antenna.
In lQQking at your area public safety communications, the days are numbers for the Pro-107 scanner.
What exactly do you pickup when your near the police station ? Tell us what exact frequency, etc.
I also take it that your iScan SD-Cards Library version is up to date, power on,press menu, lib=3xx.
Also, I would have each city imported to their own "Scanlists" so you could pick and choose what
you wish to hear. Are you even receiving and police, fire or public works frequencies ?
Was your RS Pro-107 new or bought perhaps used and maybe had RX problems that are now yours ?