- 1. [TowerTalk] Simulation of Mismatched Antennas (score: 1)
- Author: leewells@lexmark.com (leewells@lexmark.com)
- Date: Tue, 1 Sep 1998 14:43:13 -0400
- At K5GW's recommendation, I wrote a little program to simulate line loss, reflections, etc. The program will print a line each time the wave travels the length of the line. It displays the amount of
- /archives//html/Towertalk/1998-09/msg00015.html (10,268 bytes)
- 2. [TowerTalk] Side-arm blind spots??? (score: 1)
- Author: leewells@lexmark.com (leewells@lexmark.com)
- Date: Wed, 12 Aug 1998 16:25:57 -0400
- I'm planning on side-mounting a 5el 10m yagi at about 50 feet. (Looks like a 105CA has enough clearance at the mounting point to rotate around the tower on a side-arm) The main focus here is on conte
- /archives//html/Towertalk/1998-08/msg00360.html (7,671 bytes)
- 3. [TowerTalk] Clicking? & F-12 antennas (score: 1)
- Author: leewells@lexmark.com (leewells@lexmark.com)
- Date: Mon, 22 Jun 1998 16:58:09 -0400
- I've noticed the exact same thing with my EF-515 & EF-420/240 antennas. It usually happens as a storm front is approaching. It even causes a little static in my TV & stereo. I haven't turned on the r
- /archives//html/Towertalk/1998-06/msg00778.html (8,667 bytes)
- 4. [TowerTalk] Side-arms & self-supporting towers (score: 1)
- Author: leewells@lexmark.com (leewells@lexmark.com)
- Date: Tue, 10 Mar 1998 18:29:24 -0500
- I'm planning this summers antenna projects now, and I'm thinking about side mounting a 10m monobander (probably a Force-12 EF-610). What I've got: Trylon 72ft self supporting tower with Force 12 ante
- /archives//html/Towertalk/1998-03/msg00166.html (8,620 bytes)
- 5. [TowerTalk] C4XL Tuning (score: 1)
- Author: leewells@lexmark.com (leewells@lexmark.com)
- Date: Wed, 5 Nov 1997 16:23:25 -0500
- Hi Rich, I went through a similar process with an EF -420/240 about a month ago. I posted a few notes to the reflector, and traded e-mail with Tom & Natan at Force-12. I tried tuning the driver & ref
- /archives//html/Towertalk/1997-11/msg00090.html (10,762 bytes)
- 6. [TowerTalk] resonance shift with EF-420/240 (score: 1)
- Author: leewells@lexmark.com (leewells@lexmark.com)
- Date: Wed, 5 Nov 1997 16:26:34 -0500
- Has anyone noticed the resonant frequency of their Force-12 2 element 40m beams shifting under rainy conditions??? I noticed that the SWR dip shifted from 7.120 (dry) to 7.050 (wet) during CQWW. Ther
- /archives//html/Towertalk/1997-11/msg00091.html (7,096 bytes)
- 7. [TowerTalk] T2X blown fuse (score: 1)
- Author: leewells@lexmark.com (leewells@lexmark.com)
- Date: Wed, 5 Nov 1997 16:29:18 -0500
- During CQWW my T2X control box suddenly lost direction indication. The rotor would still turn, but the meter wouldn't move. As it turns out, the 1/8 amp fuse on the back of the meter was blown. Any i
- /archives//html/Towertalk/1997-11/msg00092.html (7,146 bytes)
- 8. [TowerTalk] wire 80m "Zagi" (score: 1)
- Author: leewells@lexmark.com (leewells@lexmark.com)
- Date: Fri, 21 Nov 1997 11:13:56 -0500
- I've been playing with 2-el 80m wire beams and just tried modeling a configuration with the elements at 70.6 & 60.4 feet. The elements are inverted Vee-s with 120 degrees between the legs. Spacing be
- /archives//html/Towertalk/1997-11/msg00582.html (7,860 bytes)
- 9. [TowerTalk] 80 meter wire beam (score: 1)
- Author: leewells@lexmark.com (leewells@lexmark.com)
- Date: Fri, 31 Oct 1997 19:15:37 -0500
- I'm considering putting up an 80m, reversible wire beam, and I'd like to get any thoughts and comments you may have. My starting point is the design in ON4UN's book where he uses 2 inverted V element
- /archives//html/Towertalk/1997-10/msg00001.html (8,951 bytes)
- 10. [TowerTalk] EF-240 tuning (score: 1)
- Author: leewells@lexmark.com (leewells@lexmark.com)
- Date: Thu, 2 Oct 1997 12:18:50 -0400
- What is the recommended method for tuning the elements on an EF-240??? I noticed Steve mentioned tuning each one seperately. How is this done, and what frequencies do you tune for? I've got an EF-420
- /archives//html/Towertalk/1997-10/msg00052.html (7,428 bytes)
- 11. [TowerTalk] bad coax? and EF-240 tuning (score: 1)
- Author: leewells@lexmark.com (leewells@lexmark.com)
- Date: Wed, 15 Oct 1997 14:02:14 -0400
- I'm having a little trouble getting the elements for my Force-12 EF-240 tuned up properly. I hauled the driver element up the tower yesterday to check out the resonant frequency, and found two supris
- /archives//html/Towertalk/1997-10/msg00402.html (8,001 bytes)
- 12. [TowerTalk] EF-240 tuning update (score: 1)
- Author: leewells@lexmark.com (leewells@lexmark.com)
- Date: Thu, 16 Oct 1997 11:28:52 -0400
- I was able to get the elements tuned up last night. All I needed was to add the hairpin coil to the element and the SWR and resonant frequency all behaved as expected. Both runs of coax show about th
- /archives//html/Towertalk/1997-10/msg00430.html (7,470 bytes)
- 13. [TowerTalk] Mast bending (score: 1)
- Author: leewells@lexmark.com (Lee Wells)
- Date: Sat, 20 Sep 1997 23:23:16 -0400 (EDT)
- Hey guys....I'm getting ready to put the antennas on the mast of my new tower and noticed that the mast seems to have a lot of "give" or a "springy" feel. The mast is a little over 23 feet long. I've
- /archives//html/Towertalk/1997-09/msg00576.html (7,913 bytes)
- 14. [TowerTalk] Knots (score: 1)
- Author: leewells@lexmark.com (Lee Wells)
- Date: Mon, 14 Jul 1997 11:23:23 -0400 (EDT)
- Since I didn't know how to tie many of the knots you guys were talking about, I went searching for directions on the web. Here are some sites that explain and illustrate bowlines, figure eights, etc:
- /archives//html/Towertalk/1997-07/msg00493.html (7,066 bytes)
- 15. [TowerTalk] Trylon Titans.....more info (score: 1)
- Author: leewells@lexmark.com (Lee Wells)
- Date: Wed, 18 Jun 1997 14:40:49 -0400 (EDT)
- I thought I remembered the Trylon name from KA9FOX's web site. It looks like Scott went through the same process a little less than a year ago. for more info look at: http://www.qth.com/KA9FOX/trylon
- /archives//html/Towertalk/1997-06/msg00611.html (7,018 bytes)
- 16. [TowerTalk] 4-squares (score: 1)
- Author: leewells@lexmark.com (Lee Wells)
- Date: Tue, 25 Feb 1997 18:42:22 -0500 (EST)
- de KT4ZX (Lee Wells - leewells@lexmark.com) I've seen a little talk on the DX reflector about 4 square arrays. I'm just wondering what kind of matching networks most people are using. Homebrew or com
- /archives//html/Towertalk/1997-02/msg00490.html (6,933 bytes)
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