I live on the second floor of a low income apartment complex. We can not have anything attached to the building. I am looking to put up a low cost HF antenna that will work for at least 40 through 15 meters. That I can put up with out attaching it to the building, that is it can't be fastened to the building. I am currently using a Buddipole antenna that is mounted on a ten foot wooden pole that is fasten to a Steel table that is made out of steel bars used for welding verification. Picture of it is on my Qrz.com Page NC6B. It will only tune up on 20 meters do to close proximity of a metal rail on my balcony.