Hi Robin,
Nice to see someone from the Eastern side with interest, we have
especially had Western US activity though just recently I put on a 2m
WSPR beacon from Colorado. This is a bit far for likely aircraft
scatter spotting to/from Tennessee. We've seen 900+ km routinely but not
quite as far as EM66 is from DN70. However we've also very much seen "if
you build it they will come" and simply getting on the air may shake
some more interest out of the trees. That's just beginning to happen
again in here in Colorado. With good tropo conditions we might do the
entire length to your QTH.
Horizontal polarization is indeed what we have all tended to use but
generally with a little gain so more ERP than you'd likely have from an
omnidirectional antenna.
Glenn n6gn
Fort Collins, CO DN70ll