Hi guys,
Just to have a little fun with you first, who is E and what does 'e own? (Think Bri'ish, you'll ge' i'.) Now this other guy has me all confused, are you talking EEEEE or EZ? Uh huh, the answeres are easy if you hadn't fallen asleep in English class. (;->) Then there's IEEE......
Considering the coverage holes in the NOAA VHF broadcasting system are almost all plugged you'll have a hard time separating signals when tropospheric ducting happens. BTW, that's the most common mode on VHF Hi Band, Sporadic E may happen up there but not all that often. On the other hand with VHF Lo it's usually the other way around. That over the horizon tropo scatter only happens in early morning and it's very weak, you have to have a big Yagi up pretty high and use SSB to work with it.
FYI, NOAA makes all things equal. Every station transmits with 1,000W ERP, actual transmitter power varies according to the height of the antenna. That should give you a good indication of how well signals propagate from a given area at any given time.
