I like plain and reliable systems, expecially with antennas.
If I where to install a single 5 bands antenna covering from 10 to 20
meters, I'd probably go for a log periodic or a trapped yagi.
> I can see where a 3 element 5 band quad could get real sticky and will
> it when I get time. These types of problems have been solved with wider
> spacing and that is worth a try. Variable Xc's can detune a parasite when
> certain bands are used. My plan to use variable Xc's in each reflector
> ganged together driven by a selsyn on the mast has 2 ways of doing it.
> the settings are found, adjust the set screws so the Xc's are all set for
> gain for F/B. Or have all off band Xc's at random settings (within 180
> degrees) and detuned say on the low sides. On each band it is then
> to set the selsyn to a certain degree setting on each band. The rest are
> way off. There is a solution for just about any problem except crooked
> politicians if you are creative enough. This should isolate the reflectors
> even more. k7gco
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