I just purchased a used (but mint cond.) Pro 2006. It has a toggle switch on
the top that I need help in identifying it's function. This particular model
has the sound/data squelch from the factory, so that's not it. The only
thing I noticed about the switch is it cuts the keyboard beep volume in half
when engaged. Was that ever a mod on the Pro 2006? Any other ideas? Thanks
Harryc
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