I've had a couple of these, and used them all wrong, and they still work fine.
I'm a little surprised at WIK's comments - it was my understanding that Cushcraft designed their vertical yagis to work well on a metal mast. I vaguely remember discussions about this back in neolithic times. But, it would not surprise me at all - I usually use a wooden or fiberglass mast for vertical yagis.
When I lived in Des Moines, I could literally work repeaters all over the state with it, and it was 'OK' on SSB - it does not have the gain or directivity of a really big yagi, but it's better than a poke in the eye... I could work SSB stations all over the upper midwest.
I used one of these as my first antenna for working the Oscar 10 satellite. I whipped up a quick phasing harness and fed it as a circular antenna, propped up against a ladder in the back yard. It actually worked very well - the vertical yagi is cut for high end of the band and the horizontal one is for the low end, so feeding them this way resulted in something that worked pretty well in the middle of the band.
I've about decided to put up another one, because I need some gain on FM and it would be nice to be able to actually do something in the VHF contests besides working Eskip on 6.
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