I've seen that done with dipoles ("fan dipoles") but I don't know what will happen with a bunch of 1/4 wave verticals; in such close proximity, I'd expect them to interact with with each other and mess with the tuning/radiation pattern. More typically, one vertical antenna is used with an adjustable loading coil on the bottom. But WTF, it seems like it's worth trying since you're putting the whole thing up anyhow. The worst that could happen is it won't work and you'll have to pull out the extra wires but, who knows? You could end up with something awesome. For instance, a club buddy and I were playing around yesterday and came up a 20m Moxon built out of 1/2" copper plumbing pipe that can be disassembled and tossed in the back of a short-bed pick up for Field Day. No worse than 1:1.5 SWR across the entire band and our first on-air test—with 100 watts and the thing less than six feet off the ground—resulted in a S-9 report from a ham in New Jersey.
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