Yeah I have a signal generator and can get my hands on a tone generator

That would be Great!!! Whatever it takes...If you find one let me know I'd be more than happy to pay for shipping and through something your way to let me borrow it.

Steve

I am looking for any service manuals, schematics or that type of information for Motorola Alert Monitors from the early 1970's. My fire department is currently in possesion of about 25 of them and only 10 work correctly. All still receive though some poorly, some of them don't "trip" when the tones ...