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1. [TowerTalk] antenna suggestion? (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Wed Aug 6 08:46:32 2003
My EZNEC modeling of horizontal dipole indicated off center feedpoint does not change the radiation pattern but does markedly change the feedpoint impedance! k7puc
/archives//html/Towertalk/2003-08/msg00127.html (6,575 bytes)

2. [TowerTalk] silly LM470 question (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Sun Jul 27 13:24:42 2003
There may be different versions of the LM470 with different rotator mounting methods. My LM470 purchased during the FirstCall fiasco (about 2 years ago) was advertised as having the capability to mou
/archives//html/Towertalk/2003-07/msg00434.html (10,452 bytes)

3. [TowerTalk] Triex LM470 problem (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Mon Jul 28 13:43:18 2003
The two LM470 towers that I purchased two years ago from Paragon Mfg thru FirstCall came with an "improved" motorized winch assembly. This improvement was a change from a separate electric motor driv
/archives//html/Towertalk/2003-07/msg00449.html (7,304 bytes)

4. [TowerTalk] Concrete suggestions (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Wed Apr 16 17:30:09 2003
Move your site to Olympia, Wa! Back on Oct 25, 200, it cost me $189 to have about 8 yards of concrete pumped 200' to my tower hole. But then, it was downhill (hi) and the outfit was named "Concrete C
/archives//html/Towertalk/2003-04/msg00271.html (10,461 bytes)

5. [TowerTalk] how vertical is the Leaning Tower of Pisa? (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Wed Mar 5 10:42:49 2003
How does the center of gravity play into the discussion of leaning towers? My 70' crankup (which has no means of leaning adjustment) has a center of gravity that wants to keep it vertical (or near ve
/archives//html/Towertalk/2003-03/msg00068.html (8,131 bytes)

6. [Towertalk] (no subject) (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Sun, 5 Jan 2003 11:42:10 -0800
unscribe
/archives//html/Towertalk/2003-01/msg00098.html (6,212 bytes)

7. [Towertalk] Virus (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Thu, 16 Jan 2003 19:22:19 -0800
I am still getting e-mails from Towertalk subscribers (and others) asking what I meant or what my purpose was in sending an e-mail to them. I have not been sending them (or anyone else) e-mails. It w
/archives//html/Towertalk/2003-01/msg00298.html (6,764 bytes)

8. [TowerTalk] Rising VSWR (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Thu Jan 30 19:15:05 2003
start with the output capacitor at Why don't tuner manufacturers provide dial calibration marks in terms of capacitance and inductance's rather than 0-10 or such? k7puc
/archives//html/Towertalk/2003-01/msg00585.html (8,735 bytes)

9. [Towertalk] Vee beams (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Tue, 3 Dec 2002 16:49:34 -0800
Not many (only 2) responded to the posting asking for Vee beam info sources. The best source I know of is the ARRL Antenna book (18th) and that has only one page! But I find it to be very confusing w
/archives//html/Towertalk/2002-12/msg00139.html (8,106 bytes)

10. [Towertalk] Low dipoles (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Tue, 5 Nov 2002 08:28:11 -0800
on First, Earth is said to be a pretty good reflector. Second, EZNEC reports for a half-wave 68' dipole 30' high at 7.04 mhz: no reflector perfect ground 7.93 dbi straight up 70' refl on gnd " 7.93
/archives//html/Towertalk/2002-11/msg00073.html (8,510 bytes)

11. Fw: [Towertalk] Low dipoles (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Tue, 5 Nov 2002 09:47:03 -0800
wire in
/archives//html/Towertalk/2002-11/msg00074.html (8,534 bytes)

12. [Towertalk] e-mail test (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Tue, 5 Nov 2002 09:51:51 -0800
this is a "new mail" test cuz I can't seem to reply to postings k7puc
/archives//html/Towertalk/2002-11/msg00075.html (6,113 bytes)

13. [Towertalk] Low dipoles (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Tue, 5 Nov 2002 13:35:45 -0800
Remember, the original posting was for a NVIS antenna, i.e. signal going straight up. EZNEC reported a modest straight up gain (half a db) for a dipole at 96' with a reflector at 80' (ground error o
/archives//html/Towertalk/2002-11/msg00080.html (8,062 bytes)

14. [Towertalk] wet coax (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Thu, 14 Nov 2002 12:44:54 -0800
If the insulation in foam type coax gets wet, does that effect the vswr? Or, if the vswr is low, does that confirm that the coax has not get wet inside? k7puc
/archives//html/Towertalk/2002-11/msg00309.html (6,583 bytes)

15. [Towertalk] Cleaning Aluminium. (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Fri, 29 Nov 2002 09:39:59 -0800
Do bright and shiny aluminum antennas perform better than oxidized (and dirty?) ones? Or is it visual preference? k7puc
/archives//html/Towertalk/2002-11/msg00794.html (7,996 bytes)

16. [Towertalk] Phillystran question (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Mon, 28 Oct 2002 14:46:46 -0800
Although I have a Glenn Martin tower and Hazer, I have yet to install it. However, Their literature clearly claims that "...you never have to climb a tower again..." and also includes "...never climb
/archives//html/Towertalk/2002-10/msg00810.html (8,629 bytes)

17. [Towertalk] US Tower TX 472MDP Raising Fixture (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Wed, 4 Sep 2002 12:14:16 -0700
holds I might not have the TX472MDP Raising Fixture but I do have the MDP raising fixture that came with a used HDX472MDP tower. The fixture uses a Fulton 2550 brake winch. I also have three other Fu
/archives//html/Towertalk/2002-09/msg00149.html (8,190 bytes)

18. [Towertalk] cad welding (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Fri, 2 Aug 2002 17:32:46 -0700
Will someone please explain what CAD welding is when applied to wire connections to ground rod, towers, etc. How does one get equipped for accomplishing it? TIA k7puc
/archives//html/Towertalk/2002-08/msg00050.html (6,727 bytes)

19. [Towertalk] Replacement Thrust Bearing (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Fri, 12 Jul 2002 22:22:10 -0700
I am getting at the phase in my tower assembly to install the mast and wonder if a thrust bearing is really necessary. My installation consists of an Orion 2800 rotator which specifies a vertical lo
/archives//html/Towertalk/2002-07/msg00360.html (7,795 bytes)

20. [Towertalk] NVIS antenna--reflector addition (score: 1)
Author: alwilliams@olywa.net (Al Williams)
Date: Wed, 5 Jun 2002 10:33:18 -0700
Our club is planning to have an NVIS antenna for 80m and 40 meters during Field Day. However: The World Radio Books publisher's "Near Vertical Incidence Skywave Communication" book purchased from ARR
/archives//html/Towertalk/2002-06/msg00059.html (7,996 bytes)


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