Comment Re:But how many of those 700,000 are alive? (Score 1) 358
Hopefully, the power losses in 100 feet of coax will not be too much if I use RG-213 coax and put a weatherproof automatic antenna tuner at the base of the multi-band vertical antenna.
If you can, you should investigate using some sort of ladder line rather than coax; even if you are using an antenna design that would require a balun, you will probably still do better in terms of signal loss with a 100 foot run. Of course, the tradeoff is that it'd be HF only, but it sounds like you probably already have a VHF/UHF antenna. (Also you can use an antenna, like a G5RV, that's optimized for feeding by ladder line.)
I've also seen some very clever homebrew arrangements where you can basically make your own heavy-duty ladder line by stretching THHN wire from 2x4 posts sunk at intervals into the ground. Similar to old knob-and-tube wiring almost. It's quite elegant looking when done right.