In Reply to: Multiband Wire Antenna - Looking for Comments posted by Cal Cotner K4JSI on 08/22/02
I like your thought about the T2FD. At QRP levels we
need all the power to the wire not a dummy load.Given your restrictions of feeding the antenna, I
would opt for a 100ft wire that is end fed, with
counterpoise wires for each band. Run parallel coax
from your tuner balun out a window, one coax center
to the 100ft'er, the other coax center to the
counterpoise. Solder the shields together at each end
and attach the shield to the tuner ground. Configure
the 100ft'er as a dipole or inverted vee. The upper
bands will have directivity off the end. If that is
not desirable, then also put up a 50ft'er and make
them switchable. Use the 50 for the upper bands, sure
it will still have some directivity but not near what
the 100 ft'er has.
Personally, I prefer horizontal loops, but it sounds
like you have a pretty limited space.
There are a whole lot of variables that are not known
or mentioned in your original post, i.e. yard size,
available supports, ingress/egress to the QTH, the
antenna police, is this a DX or Stateside antenna,
etc. With all that in mind, this is only a off-the-
cuff response.
72/73...Walter, AG5P