On Sun, 16 Apr 2006 21:55:45 -0400, Buck wrote:

I'm using a random length loop, probably about 200 feet fed with
450 ohm ladder line. The ladder line hangs about 18 inches from
my tower and I get good reports from all over. My advice, if you
have and idea, try it, if it works great. If not, back to the drawing
board

Jim WU7G


In general there is a magnetic/electric field between the conductors in
twinlead feed line.
Dave WD9BDZ

Dave,

Just to clarify, is the 'magnetic/electric field' to which you refer
the same as saying 'electromagnetic field'? I am just trying to
clarify whether it is just how you expressed it or if you are making a
distinctive difference.

Thanks
Buck

I agree, however in my current situation I really can't keep going up and down to the roof because I'm renting a suite in the basement and I'm already pushing things with all the feedlines and isopole VHF antennas already up there. The landlord is a really decent guy and has been totally reasonable --- so far. If I keep wanting to do more and more he's going to feel obligated to say no sooner or later.

There's another issue, though, a more important one --- I moved the feedpoint to the SW corner of the roof (pic at http://members.shaw.ca/cyberhun/ham.htm) and used coax for the feedline. But when I was up there, I was so freaked out by the height that I forgot to waterproof the termination --- but I'm not going back up there til I can figure a way to do it more securely. It doesn't matter how many guys are holding the bottom of the ladder. If it starts to slide one way or the other, there's too much leverage for anyone to stop it. Water damage be damned, a fall from that height could be deadly.