Home |
Search |
Today's Posts |
#3
![]() |
|||
|
|||
![]()
On Mon, 29 Sep 2008 20:31:42 EDT, Bill Horne wrote:
I've been using an inverted vee for 80 meters, with mediocre results. I'm willing to experiment with other designs and I like the simplicity of verticals, but I've got to get something up before the weather turns, so if you've used a vertical on 80 meters, please answer these questions for me. 1. Performance? 2. Is noise worse/better/the same? 3. Is a quarter-wave radiator essential, or can it be shorter? 4. Loading/tuning? 73, Bill W1AC I have not used a vertical on 80 meters, so I cannot answer questions 3 and 4. However, I do have some opinions: Whether a vertical is better than an inverted-V depends upon what you want to accomplish. If you want maximum DX, then the main radiation lobe of your antenna should be at a low angle re. the ground. A vertical antenna has a low angle. A horizontal antenna (an inverted-V is mainly horizontal) must be up about one wavelength (80 meters, 271 feet) to get a low-angle radiation lobe. But, if you want to contact stations in your state or region (in your case, New England and neighboring states), you want the radiated energy to go nearly vertical, so that it bounces off the ionosphere and returns nearby. A horizontal antenna mounted low does this. I live in the desert southwest near Las Vegas where we have no tall trees to tie antennas to. I have a half-wave 80-meter dipole mounted about 25 feet (0.09 wavelength at 80 meters) high. It gives me nearly-vertical radiation. I have good coverage of Nevada, southern California and Arizona. But no DX. However, I don't chase DX; I'm content to chat locally. Local interference from lightning, power lines and most other non-intentional sources is vertically polarized, so a horizontal or inverted-V would pick up less of this type of noise. Distant interference from any source would be reflected by the ionosphere and be of random polarization. 73 de Dick, AC7EL |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
FS: 10 / 12m Vertical | Swap | |||
when does a vertical become vertical dipole? | Antenna | |||
The Long and Thin Vertical Loop Antenna. [ The Non-Resonance Vertical with a Difference ] | Shortwave | |||
1/4 wave vertical vs. loaded vertical | Antenna | |||
WTB: HF Vertical | Swap |