so many agencies fell for the sales pitch from these vendors
I just want to mention, it's easy to sit behind a keyboard with a scanner and cyber engineer radios systems. I can tell you from experience, you might want to re-consider blaming sales people every time something goes wrong.
Sure, some sales folks can make errors. However, a respectable local government agency wishing to purchase a new system should always hire a communications consultant. The consultant writes the spec for an RFP that vendors have to bid on. Then they build the system per the spec or don't get paid.
Do some research. Perhaps the radio vendor built the system per spec by a consultant that doesn't know what he/she is doing.
Something to think about before you cyber bully sales folks and vendors.
A good consultant will understand RF and the public safety world. And, there are consultants that shouldn't be in the business.
If a multi million dollar system was purchased without a RFP process....oh well.