Ok, I'll chime in on the feedline thing. A lot of guys swear by open wire line. I swear AT it
But, seriously...
I use one antenna for 75 and 160 meters - yes, fed with coax. 2 antennas connected to the same feed line at 90 degree angles to each other. Another completely seperate antenna for 40 meters and 10 meters. Didn't bother with 20 - maybe someday..
The thing I don't like about open wire is trying to get it balanced. It's just about impossible in the "real" world of trees, wires and the like - and if the feedline is LONG (like mine is), that's more of a problem. I didn't even get into the tuner issue.
So, good old hard line coax from the local scrap yard (cable TV hard line - cheap and works great!). I've got about 15 type 43 toroids at the end of the coax (the coax passes through these cores) at the antenna to decouple the line from the antenna itself.
The results speak for themselves
(for anyone who has ever talked with me on 75 or 160, that is)
Regards,
Steve