Folks, I have seen 40 meter scores using the 402cd's, a few C4XLs. These are all shortened 2 el 40m. Now the Cushcraft X9 is out with a 2 el 40 meter addon. I have been unable to get any information
Hello Jorge, The common 4sq orientation in the eastern U.S. is 45/135/225/315 degrees. That simply is to put the best pattern on Europe at 45 degrees. With your directions to Europe and the USA you w
The 1.5 kW PEP is at the amplifier output. That has been clarified with the FCC multiple times. Tuner, feedline, antenna system losses are your problem. You are diminished by those losses unless you
I've had an AIM for a long time, only version 2 of the PCB. A little slow but fully functional. However it needs a separate PC. Check out a Sark 110. An AIM plus a PC, plus a smartphone battery syste
That would be nice, something that can be drawn across a couple hundred feet in a walking motion. Manufacturer, model number and retail source URL?? 73, Guy K2AV _____________________________________
My **GUESS** is that it's a deterioration of the surface portions of the copper, decomposition by-products of the inner insulation, held against the copper surface for extended periods, never washed
Bare wire up outdoors over ten years, just what I would term a patina on the outside. This is in contrast to what happens to bare copper used in a woven coax shield which has become waterlogged, wher
Did a little more digging into hurricane Isabel. Gusts were measured in the Norfolk area up to 74 mph, which compared to other hurricanes may seem tame. At landfall, Isabel was a category 2, but was
Certainly true that the coax VF is part of the tuned network, however... There are two possible issues going on here: While you may adjust by the ratio of the velocity factor to get the inside-the-co
Tuning it down to nothing does not necessarily mean better performance. For some of the tuners, particularly some of the smaller ones, no reflected power means that the swr is going out in the form o
When I moved from Va to NY, I couldn't get mine out either. Just depends on the dirt and the local topography. If it turns into a sea of mud every spring and the place doesn't drain well, depending o
Antenna efficiency is reduced by power lost to heat radiation, either from conductor resistance or dielectric loss in nonconducting components of the antenna. Antenna SYSTEM efficiency, as read, need
Probably not, because 12 feet is definitely near field for 20 meters, and for each of the antennas the boom of the other would be a major conductor no farther away from the driven element than the fo
I think you're a little off on this one, Steve. In construction of all concrete framed buildings, pours separated by weeks and having rebar in common are all over the place, and have to be. They occu
Bite your tongue. That book is a bunch more "real info" than some manufacturers want you to see. One manufacturer, seeing the cruel facts about how poorly theirs stacked up, published a pitiful obfus
And spend the time to type the study data into very long email, for the same question asked over and over? How many times has someone asked the question on TT about how tribander A compares with trib
I find that story quite remarkable. More detail about the failure? Which antenna, mode of failure, ice or wind involved, etc? My personal experience with F12 products has been excellent, especially w
A direct lightning strike with the voltages to jump from the sky to ground will ignore small irritations like a dipole center insulator. I have seen the wire vaporized with nothing (including the cen
Egads, it boggles my mind that people don't know how to do this... Go to http://www.contesting.com with your browser. In the panel on the left, down a little ways, is an entry box "List Search". Type