I noticed that there are discone antenna's which cover from 50 Mhz - 1.2 Ghz with a low SWR and not require any tuning. I was wondering if it is possible to make a much larger discone that will be able to cover most if not all the HF band and not require tuning like the one for VHF/UHF. It seems like if you made a discone much larger it would work on most of the HF band since discones are wideband antenna's. I was thinking that it would be awesome if I could have one for HF since it would probably be able to cover most of the bands without a tuner, but I have not seen any discone's that are for HF. Has anyone tried this? Would it be possible to make a larger discone that would work on at least the higher HF bands without a tuner?