This same argument has come up COUNTLESS times for Fayette, Westmoreland, Somerset and all the counties that have switched to ICORRS. Will there be dead spots? Yes. Are there dead spots now? Yes. Is the system going to work? Yes. Are the firemen going to loose their minds because they can't use CCR on the system? Also, Yes.
To summarize Surge's thoughts- and Dictator17's.....
Every radio system: low band, VHF, UHF, 700, 800, 900 has dead spots.
In the low band days if folks couldn't reach back to their base or the county dispatch, they would relay to another unit, etc until the message arrived where it should.
VHF- while VHF is popular and many believe it is a godsend and works better than anything else..... go to a good mountain top/hill top, throw an antenna (gain style) 200 feet in the air, hook a good receiver to it and listen to everything you hear. There are times with minor band openings for skip/etc on VHF where my 155.295 base stations here at Fayette will pick up radio traffic and basically never have "dead air" for more than a few seconds at a time thruout 12-24 hr periods. On top of that, getting slammed with portables and mobiles 300/400 miles out during these openings (or further) or 200+ miles during normal conditions make me glad we only use it for paging.
UHF- same as above on VHF.
700, 800 have the luxury of not being affected (most of the time) by skip activity and such. Though my repeaters here at Fayette have no issues picking up portables and mobiles 100+ miles out from the tower sites, there are times where we see in the transaction logs for the control channel, that traffic from distant users of distant systems are hitting us.
When you find me a cell phone (which most folks have now) that has no dead spots, then you can complain and moan about all the other freqs and systems and their coverage issues.
Do we have dead spots in Fayette? Yes. Those same dead spots are there on Cell phone, UHF, VHF, and yes even low band when trying to get back to the county dispatch center.
The balance is to find coverage across the areas with the higher populations and higher call volumes. A dead spot in the middle of the woods with no one living within 3 miles doesn't concern me. A dead spot in the middle of the woods along the bike trail in Ohiopyle where 2+ million people pass each year concerns me. And has a tower to cover it.
Will the 12 sites work perfect and have no issues? probably not. But the VHF system after years of "tweaks, additions, changes, etc" still has issues and doesn't work perfect. Our system was operational on P25 for 6 years before we started the planning to add 2 more sites to cover bad coverage areas in some more populated areas.
Have a great one!