84' + 104' ... I take it that's an inverted-L with a total length of 188'? That's interesting, Guy.
I've been playing with different lengths of wire in EZNEC+ 5, for a 160 Inverted-L here with a 55' high vertical section, and would appreciate some advice here. I'm leaning towards making mine longer than a 1/4 wavelength, too. My EZNEC models seem to indicate that lengthening the horizontal section --so that the total length of the inverted-l wire varies between 1/4 and 3/8 wavelength-- seems to make little difference in the low angle radiation; but the longer the wire, the more high-angle stuff there is. >From what I can tell, lengthening the horizontal section will make very little difference in the gain at low angles for 160m DX. But the added high-angle radiation from a wire with a total length of from 5/16 to 3/8 wavelength will improve the propagation for close-in contacts without affecting the DX capabilities. Am I wrong about this? Any comments on this would be very much appreciated. I haven't yet decided exactly how long to make my inverted-l yet, and I'd appreciate any advice. The constant is that the vertical portion will be 55' high, I am just undecided on how long to make the horizontal portion. I want to put the inverted-L back up very soon. I was going to use an FCP under this, but I'll probably just use elevated 1/4 wavelength radials like I did before. 73, Mike www.w0btu.com On Fri, Nov 9, 2012 at 6:59 PM, Guy Olinger K2AV <[email protected]>wrote: > > I'm using an FCP at 7 feet with an 84 foot vertical wire plus 104' > horizontal. > _______________________________________________ Topband reflector - [email protected]
