FWIW, I've been scanning the VHF Lo frequencies in northern Nevada (Route 80 to Elko, Route 50 to Ely) for a while now and have received nothing but bogies.
I still scan those frequencies because they sometimes produce a flurry of as-yet unidentifiable activity up here in the Sierra. The signal is very strong, though I've only heard static to this point. What keeps me intrigued is that the frequencies always show up in twos and threes. There'll be several seconds of static on, say, 42.5 (mobile radio) and then an immediate response on 42.56 (car-to-car) and then, perhaps, another response on 42.88 (mobile extender). This'll go on for fifteen to 30 minutes and then fade away. It seems to happen only when I'm high up in the Sierra (e.g., Route 431, Mount Rose Highway), so I suppose it might be coming from pretty far away, a la California. Any ideas?