K4SAV wrote :
Comparison:
El Angle Half Square Dipole 2 Ele Vert 2 El Inv Vee 14% above
30 2.1 5.7 1.9 8.7
20 3.6 3.8 1.8 7.1
15 3.5 2 1 5.4
10 2.3 -1 -.5 2.4
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I knew a half square was a low angle antenna but I would of never guessed a
dipole @ 50 ft
would be equal to it at a 20 degree takeoff angle. BTW I was feeding my half
square at the
bottom and had 4 radials on it.
Your numbers at a 20 degree TO angle seem to agree with what I saw on W4RNL's
webpage.
Can you model the 2 el wire beam with the ends about 20 feet off the ground.
That is what they
would be in my case.
I presently also have an 88 foot doublet feed with open wire that is at about
45 feet.
It also seems to work pretty good on 40 meters. It is broadside NE/SW. I know
it has nulls off the ends so that is why I have a 40 meter vertical and my
NM/SE 20 meter dipole. I bet it's numbers are pretty close to a 50 foot high
dipole on 40 meters. If I am interested in working EU I am probably not gain
anything with putting up a half square toward that direction....
Jeff
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