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21. [TowerTalk] Re: Tuners and Matchers (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Fri, 16 Jan 2004 06:56:43 -0600
Another advantage is that the L network always gives you only one match, at the lowest Q, minimizing the stress on the tuner. With a Pi network, there are many possible matching combinations at varyi
/archives//html/Towertalk/2004-01/msg00272.html (8,738 bytes)

22. [TowerTalk] Re: Rohn 45G foldover questions (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Mon, 26 Jan 2004 13:25:37 -0600
Mahlon, As you know, I have the 25G foldover type, and the best I can tell, is that the only time it would make a difference if you have these bolts in or not is when the tower hits the ground and br
/archives//html/Towertalk/2004-01/msg00472.html (10,799 bytes)

23. [TowerTalk] Re: Feeding 2 Inv V's with 1 feedline (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Mon, 26 Jan 2004 13:32:59 -0600
If both dipoles will be used in the CW portion, I would tune the 40m dipole first. Considering that the 80m dipole should have greater impedance at 7 MHz than the 40m dipole at 3.5 MHz, the 40m dipol
/archives//html/Towertalk/2004-01/msg00473.html (8,711 bytes)

24. [TowerTalk] Re: Ground Crew (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Sun, 22 Feb 2004 20:42:41 -0600
Everybody is right. 1) The link had no place on this board, warnings or not 2) No one should blindly click on links without thinking first and making sure that's what they want to do. If such a perso
/archives//html/Towertalk/2004-02/msg00456.html (9,575 bytes)

25. [TowerTalk] Re: USCG Tower Disapproved (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Fri, 05 Mar 2004 16:12:52 -0600
I think the Coast Guards need to buy a bunch of these little stickers you can put on the battery case of your cell phone to increase the range by 1000%, and stick them along their 500 feet tower. Tha
/archives//html/Towertalk/2004-03/msg00112.html (8,320 bytes)

26. [TowerTalk] Re: weatherptroof boxes (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Fri, 19 Mar 2004 12:51:37 -0600
If you can find some paint or coating that will stick to the material, you can make them last significantly longer. It's got to be thick enough to be an effective barrier to the sun light, not only d
/archives//html/Towertalk/2004-03/msg00334.html (7,332 bytes)

27. [TowerTalk] Re: static cat (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Sun, 21 Mar 2004 12:07:59 -0600
The problem is that the ground is not charged, the clouds are charged. Think of the earth and the cloud as both plates of a capacitor, except that the bottom plate is a few 10 of thousands of miles l
/archives//html/Towertalk/2004-03/msg00386.html (11,010 bytes)

28. [TowerTalk] Re:Static, Lightening, and protection (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Sun, 21 Mar 2004 22:02:26 -0600
I remember seeing a report of a lightning strike hitting a tower at the mid point, between the guys. I do not recall if this was a ham tower with a large beam or just a comm or BC tower. Maybe we sho
/archives//html/Towertalk/2004-03/msg00412.html (7,365 bytes)

29. [TowerTalk] porcupines and such (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Sun, 21 Mar 2004 22:07:49 -0600
Bill, I did not say the charge on the earth was "absolutely" uniform. It is just significantly more uniform than that of the clouds because the earth is considerably more conductive (I did not say ea
/archives//html/Towertalk/2004-03/msg00413.html (13,763 bytes)

30. [TowerTalk] webcam atop the tower (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Mon, 22 Mar 2004 09:15:08 -0600
In my case, the cam is too far to bother the 802-11b network, but the hub really messes the picture. I agree with the obnoxious ads, but they have never spammed me, and they have good prices and good
/archives//html/Towertalk/2004-03/msg00430.html (8,373 bytes)

31. [TowerTalk] webcam atop the tower (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Mon, 22 Mar 2004 09:15:37 -0600
Michael, I have one, similar to what you describe, near the top of my 50' tower (under the 2m beam). Make sure it is oriented such that the sun will not get into the picture. That would be assured de
/archives//html/Towertalk/2004-03/msg00431.html (8,996 bytes)

32. [TowerTalk] Re: Static, Lightening, and protection (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Mon, 22 Mar 2004 09:18:24 -0600
I am glad that in the scientific arena theories are not validated by voting. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: 145.69MHz or telnet://dxc.k1t
/archives//html/Towertalk/2004-03/msg00432.html (9,285 bytes)

33. [TowerTalk] Re: Static, Lightning, and protection (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Mon, 22 Mar 2004 09:22:37 -0600
Good point. At higher altitude, the dielectric strength of air is less, so the voltage cannot build up as much before the strike starts, so the clouds cannot build as much energy as they can in Flori
/archives//html/Towertalk/2004-03/msg00433.html (8,151 bytes)

34. [TowerTalk] Re: Static, Lightning, and protection (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Mon, 22 Mar 2004 10:40:02 -0600
statistically the change is relatively small. In a typical area of central Florida the median stroke current is about 25kA, where in central Colorado it is about 20kA. In the highest current range (2
/archives//html/Towertalk/2004-03/msg00440.html (10,504 bytes)

35. [TowerTalk] Re: Protecting Steppir control cable (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Tue, 23 Mar 2004 14:15:40 -0600
Polyphaser sells a rotor cable protector for 8 wire rotor cable. That may work well for the Steppir (you may need more than one). It is rated 24VAC. That raises a question: where do you buy the Polyp
/archives//html/Towertalk/2004-03/msg00484.html (10,560 bytes)

36. [TowerTalk] Steppir maintenance (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Tue, 23 Mar 2004 14:41:44 -0600
Some people might object to having to take the antenna down every 5 years for routine maintenance when other antenna designs do not require it. On the other hand, the Steppir is a unique design with
/archives//html/Towertalk/2004-03/msg00489.html (7,102 bytes)

37. [TowerTalk] Re: New Rohn group (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Thu, 25 Mar 2004 11:20:06 -0600
This is a great idea! May I suggest an annual gathering where members would bring their most prized Rohn parts for show and tell. Awards would be given to those who have demonstrated exceptional abil
/archives//html/Towertalk/2004-03/msg00547.html (8,140 bytes)

38. [TowerTalk] Re: CC&Rs (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Thu, 25 Mar 2004 12:46:51 -0600
Mahlon, CC&Rs come in all shape or form. Mine, also from the 70's, are about as long as your message and essentially say that thou can't build a sewer line less than 5 feet from thy neighbor. Not ver
/archives//html/Towertalk/2004-03/msg00558.html (8,462 bytes)

39. [TowerTalk] High power Tuners (score: 1)
Author: Didier Juges <didier@cox.net>
Date: Mon, 29 Mar 2004 08:52:23 -0600
Let's say (as an example) that your antenna mismatch and cable lenght result in 20% of transmitted power being lost in the cable. When you run 100W, that's 20W. If you transmit 1500W, that's 300W. Pr
/archives//html/Towertalk/2004-03/msg00632.html (6,911 bytes)


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