I had tree's removed and trimmed and put up a nice full length 80 meter dipole with a 1.4 to 1 swr fed with about 70 feet of rg8x coax. Seems to work great. I can tune it up on 40 meters with the drake tuna and it seems to work fine that way. I also have the zero5 vertical (30 feet tall) roof mounted which also seems to work ok on 40. The question is: if I added a 40 meter section, or put up a resonant 40 meter dipole in about the same situation, would it work better then the 80 meter dipole on 40? 7.3 Mhz, so I am not going to have a lot of loss in the coax. Would it be worth the trouble to add a 40 meter section to the 80 meter dipole?