I live in an apartment and would like to try working some 10m dx. The best thing I have come up with so far is a horizontal dipole made from coax, taking advantage of the velocity factor to shorten the overall length. (10 Meter Dipole Using Coax Velocity Factor To Shorten Antenna by PY2RML) I can place this antenna outside on my patio strung between two columns and it should fit. I think I can get away with this since my patio doesn't face anything people will see. I drew a little sketch. Any thoughts on this idea? Can I use some string between the columns to hang the dipole on so there is no load on the coax?