Originally Posted by airplane1
getting a maco shooting star from an operator who is not in good health and needs every thing taken down so he can sell his home.
I was wondering if anyone ever used one on 10 meter and if it would work good there?
i don't think maco ever made an m104hv, just 3 & 5 element versions. BUT, i'd compare the standard SUGGESTED m103 & m105 measurments to the 103hv & 105hv, and if they are consistant, remove the 'glas spreader ends from the relector & replace with aluminum & make them full length yagi reflectors.
NOW, for the kicker.....what i'd do is build the VERTICAL tuned to 27.400 or so. past experience has shown the m104 to tune to around 1.3:1 vertically polarized due to the mast interacting with the driver & 1st director. a decent tuner & you should still have real gain over 7dbd on 11m, and pretty near 6dbd on 28.400. heck, even if you show 3:1 swr on 24.950, matched with the tuner, you will have noticeable F/S & F/B rejection, and 'noticeable' gain over a dipole. highly unlikely you'll ever miss anything by NOT being horizontally polarized on 10m, 11m, & 12m.
so, what to do with the horizontal elements? a couple of choices. you could make a real nice 5 element 6 meter yagi. you could make a real nice 3 element 15 meter yagi. or you could make a nice 2 element 20 meter yagi. i've seen several short-boom 3 element 20m yagis, but not sure how much difference you'd see performance -wise vs a full size 2 element.
i should only have so much free time on my hands. or enough space to do it :-)