Let’s split this problem into three, VHF (and UHF), CB and 10m, then look at longer wavelengths including 80m and possibly top-band (160m). I discuss commercial products that will do this job also some ideas for very simple construction techniques made from wire. Of course, you can also dual-use your equipment to prepare to go out portable / mobile with your radio kit too. Anyway, see what you think. Callum, M0MCX.