-- Original Message -- From: "Jim Lux" <jimlux@earthlink.net> To: "towertalk reflector" <towertalk@contesting.com> Sent: Wednesday, September 15, 2004 9:57 PM Subject: Re: [TowerTalk] verticals in wo
I think that the contact area IS the dominant effect here.. the cambium is a sheet conductor in the classical sense, so, to a first order, the resistance is going to be inversely proportional to the
The loblolly pines on my property have the least resistance measured on the Fluke. If the ratio of 1/5 the linear resistance or 1/100 the linear resistance of holds for the other trees, only the lobl
Hmmm. Definitely regional colloquial stuff... Is dinner a fancy full course lunch or the evening meal.. What does "this week upcoming" mean...this week or next week? What does "next week" mean. Twice
Posting this for Dennis. Please reply to him direct. - Guy -- Hello: Recently purchased a used Mosley Pro 96. Seems to be complete except for the Manual. I've written and sent check to Mosley, but th
-- Original Message -- From: "Jim Lux" <jimlux@earthlink.net> and the peak elevation angle for propagation on 40 is only 3 degrees above the horizon While I agree with the admonition to consider the
That's the d*mned if you do, d*mned if you don't issue IF you only publish one kind of measurements. If you don't do isotropic figures, then you can't adjust for your own antennas. But you ALSO need
In terms of the simple math and numbers, you are correct. But to USE the numbers to make a construction decision is where the other considerations come in. If you use VOACAP running under "poor" stat
The problem with the experiment is that which mode is open, or how MANY modes are open and which one(s) being used, may not be determinable or selectable unless both ends have an antenna with a very
-- Original Message -- From: "K0PYK" <k0pyk@yahoo.com> The configuration is, from the connection point...40 feet up vertically...120 feet cross the top horizontally...them angle back down to the conn
* 2nd...I am on a city lot so an antenna with multiband versatility, within range of the rigs internal tuner is a consideration. The art of the do-able. Articles, canned designs are fine, but do they
I agree. The professional foundation guy that did mine (my contractor son-in-law dug him up for me) said two or three weeks kept wet before loading it. As he put it, "For that much money, why take ri
So what you are saying is not 4-6 dbi, but 4-6 db over a single vertical similar to the 4 in the 4-sq. Or four of them gives you about quadruple the perceived power over one of them, or that the phas
There are often unnoticed assumptions buried in VHF antenna design extrapolated to HF. In the sleeve antenna, the relationship of the sleeve to the coax is mechanically controlled. The generous separ
If geo888@cs.com was in the user database, the reflector software would have cancelled the address itself. This problem is because someone registered a forwarding address as the user to Towertalk, an
I have found I can't directly measure characteristics of the ground itself with what I own so I could make a model give an absolutely accurate gain level. BUT... If you are comparing two different co
Depends entirely on the surface treatment of the tower and the environment. I use closer-spaced-than-needed clamps for my 1 1/4 hardline and tape/tie wrap everything else to the hardline. Saves me fr
This will not be a question with a simple answer. You need to obtain a terrain analysis program, such as HFTA, which comes with the ARRL Antenna Book. Both optimum placement of the antenna relative t
I'm really not sure why you are having this problem. I would concede that for frequencies where 3 element yagis are common, gain effects will be foreground. Front to back is another matter if it's an
Slopers are notoriously variable in their performance. This is because the tower itself is fully in play, as are the antennas on it. A particular tower/antenna system is usually very difficult to mod