I have built several coaxial dipole antennas in the past with great
success. What I like about this antenna is it is broadbanded. If you
design it using the center of the band of your interest, for the most
part you can cover the entire band without retuning. The problem I
have always had with this is the antenna is somewhat fragile. I have
used plexiglass squares to secure the center of the antenna and taped
nylon fishing line to the legs for more strengh. Any one with more
ideas? These are mostly useful in the HF range. You can find the info
on designing these at http://www.amateurradios.info and other places
on the net.

73's
Bill w5grx