For several hours yesterday morning/afternoon I was hearing what appeared to be MARCS coverage testing. It was taking place on TG 64736 which is aliased as OHIO EOC under the EMA portion of MARCS. They were driving all throughout the county checking RSSI readings and figuring out what towns favored which towers, etc. I just found it interesting that the system has been on the air for how long now and people are out doing coverage testing?