I've used a center fed antenna like that with good results. The same rule apples as applies to an Inverted V: keep the angle >90 degrees to avoid excessive signal cancellation.
Feeding it off center means your "feed line" is not just a transmission line: it's another radiating element in the antenna. Since the load is unbalanced, the currents will be unbalanced, no matter what you do at the rig end with baluns, etc. So be sure your feedline runs as short a distance as practical near the house, through walls, etc. You didn't say how long it'll be, but at frequencies where the legs get to be a couple of wavelengths long or more it'll start to show directivity in the direction of the open angle of the V. Ron AC7AC -----Original Message----- Fellow Elecrafters, There's lots of stuff in the antenna literature about inverted V antennas, i.e., where the feedpoint is higher than the ends. But I can't find anything on dipoles and such in which the ends are not in the same vertical plane as the center. I'm thinking of putting up a stealth antenna that would be an OCF dipole with the feedpoint at the peak of my roof, and the ends extending toward two trees alongside the house. I've taken some measurements and calculated the angle between the legs as being about 97 degrees - but of course in the horizontal plane, not the vertical plane like an inverted V. I'd feed it with ladder line and my good ole Johnson Viking Matchbox, so I'm not worried about effects on feedpoint impedance. I imagine it would exhibit some directionality, probably toward the open side of the V ? Anyone see any major pitfalls with this approach?? 73 Ray K2HYD KX-1 # 608 _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
