- 41. [Towertalk] Re: [Towertalk] Quad vs Yagi (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Tue, 19 Nov 2002 19:36:27 EST
- quiet Look guys, I am not going to engage in pissing contest or arguments. All I am trying to relate my experiences with real life antennas and shed some light at some soft modeling "results." If you
- /archives//html/Towertalk/2002-11/msg00507.html (10,231 bytes)
- 42. [Towertalk] Universal aluminum (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Mon, 2 Sep 2002 09:11:22 EDT
- Last time I installed antennas on Trylon tower, yes, the edges of the formed pieces of steel that the tower was made of are "clean" steel, without galvanizing. It also appears that pieces are cut fro
- /archives//html/Towertalk/2002-09/msg00053.html (8,399 bytes)
- 43. [Towertalk] Trylon towers (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Mon, 2 Sep 2002 14:21:57 EDT
- Depends on the environment. If you have seen what happens say in Aruba, you would be concerned about edge corrosion. It gets under the skin and spreads like wildfire, stuff disappears. Normal non-cor
- /archives//html/Towertalk/2002-09/msg00065.html (7,951 bytes)
- 44. [Towertalk] Mast Coupler (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Wed, 11 Sep 2002 22:05:45 EDT
- The better way for large antennas is to use rotator that ramps up its speed gradually and then coasts to stop. No need for shock absorbers. The best rotators are the ones using self locking worm gear
- /archives//html/Towertalk/2002-09/msg00391.html (7,908 bytes)
- 45. [Towertalk] Cracked Leg on Rohn 45G (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Fri, 27 Sep 2002 12:00:46 EDT
- If the tower and problem was mine, I would: Rust proof the crack (cold galvanizing spray) to prevent any future corrosion. 1. Put bunch of hose clamps close to each other over the length of crack. Th
- /archives//html/Towertalk/2002-09/msg00886.html (7,853 bytes)
- 46. [Towertalk] Changing towers (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Fri, 27 Sep 2002 12:17:39 EDT
- with nice If the tower and situation was mine, I would: Cut the old legs and leave some length sticking out. I could stick expansion bolts inside the tubing or steel rods with tight fit and weld to b
- /archives//html/Towertalk/2002-09/msg00887.html (8,755 bytes)
- 47. [Towertalk] For TowerTalkians in NE USA (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Sat, 28 Sep 2002 20:43:54 EDT
- Come and have radio-octoberfest fun! You are all invited to (Radio) "Uktoberfest" at Mountainview Resort Verkhovyna (dance hall) in Glen Spey, NY (NY,NJ,PA tri-state area) hosted by the Tesla Radiocl
- /archives//html/Towertalk/2002-09/msg00935.html (8,031 bytes)
- 48. [Towertalk] Fence fence go away (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Wed, 14 Aug 2002 21:36:25 EDT
- Short of breaking the fence into non-resonant pieces (insulating segments) what might work is the "trombone" tuned circuit consisting of u shaped piece of long tubing with capacitor at the open end a
- /archives//html/Towertalk/2002-08/msg00445.html (7,070 bytes)
- 49. [Towertalk] Generator (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Fri, 16 Aug 2002 08:56:07 EDT
- Thing to look for is the regulation. Some generators have poor, some good. For ham radio purposes where load/no load cycle can be extreme (like running linear on CW) this is important consideration.
- /archives//html/Towertalk/2002-08/msg00499.html (7,071 bytes)
- 50. [Towertalk] Models and real world (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Thu, 11 Jul 2002 09:02:13 EDT
- Hi Rick, very interesting and thanks for bunch of experiments. What is the "ground screen"? Bunch of radials or screen/mesh like wires? Yuri
- /archives//html/Towertalk/2002-07/msg00285.html (7,062 bytes)
- 51. [Towertalk] Statics 101 (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Fri, 12 Jul 2002 00:04:51 EDT
- (same It "do's" matter! (According to "mechanics 1001" :-) If you use two pulleys, one pulley at the bottom (with one end of rope tied to the top of tower, the other end looped through pulley at the
- /archives//html/Towertalk/2002-07/msg00328.html (7,816 bytes)
- 52. [Towertalk] WX0B Six-Pack (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Wed, 19 Jun 2002 07:39:25 EDT
- wiping I saw somewhere (G3? or Rich Measures page?) circuit for power supply arrangement, where the relays get higher voltage "shock" when first turned on, then voltage drops to nominal for holding t
- /archives//html/Towertalk/2002-06/msg00293.html (8,524 bytes)
- 53. [Towertalk] More on Lightning protection (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Tue, 14 May 2002 22:37:03 EDT
- to dissipaters. likely Anecdotal, but it striked me. I was hit few times by lightning when I had "inferior" (tribanders, small) antennas on the tower. When I had 3 el. 40m Telrex, lightning seemed to
- /archives//html/Towertalk/2002-05/msg00375.html (9,180 bytes)
- 54. [Towertalk] Grounding an Elevated vertical (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Mon, 11 Mar 2002 10:30:30 EST
- under does Ground screen prevents RF from penetrating and "reflecting" from poor ground, it shields it from the RF generated by the radiator and elevated radial(s) = better efficiency. This is analo
- /archives//html/Towertalk/2002-03/msg00124.html (9,654 bytes)
- 55. [Towertalk] Grounding an Elevated vertical (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Mon, 11 Mar 2002 10:54:09 EST
- Question that is bothering me: If we have vertical installed over sloping terrain, how does that affect the far field effect on the radiation pattern close to horizon? Do we see some "salt water" eff
- /archives//html/Towertalk/2002-03/msg00126.html (9,332 bytes)
- 56. [Towertalk] elevated verticals-- (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Mon, 11 Mar 2002 17:12:18 EST
- There IS a gain somewhere between 10 - 15 dB next to, or over salt water with vertical antennas as compared to similar antennas installed inland. Jump in the mobile and drive around you WILL see it!
- /archives//html/Towertalk/2002-03/msg00141.html (7,138 bytes)
- 57. [Towertalk] Reflection Gain (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Mon, 11 Mar 2002 22:51:34 EST
- So what you call it when I see increase in signal level when driving close to the ocean (good ground plane)? Negative attenuation? :-) What do you call increase in signals near ocean by 10 - 15 db? (
- /archives//html/Towertalk/2002-03/msg00147.html (7,460 bytes)
- 58. [Towertalk] Verticals on sloping hills? (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Fri, 15 Mar 2002 13:32:49 EST
- Not to rain on tower discussion, but I have this question about the verticals installed on the sloping terrain, like hillside. I have been to the ocean front and seen the benefits. I wonder what the
- /archives//html/Towertalk/2002-03/msg00297.html (6,641 bytes)
- 59. [Towertalk] deed restrictions (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Sat, 16 Mar 2002 21:05:07 EST
- No kidding! Remember my installation of 110' Big Bertha, with 62' stacked Razors on 46x120' lot in the suburb of Toronto, antennas overhanging property line when beaming anywhere else but south :-) W
- /archives//html/Towertalk/2002-03/msg00350.html (9,449 bytes)
- 60. [TowerTalk] Dielectric losses (score: 1)
- Author: K3BU@aol.com (K3BU@aol.com)
- Date: Fri, 1 Feb 2002 09:50:24 EST
- The best definition yet, thanks Mike! One other thing that comes to mind, in older cables there were problems with migration, where properties of the insulation between the center conductor and shiel
- /archives//html/Towertalk/2002-02/msg00021.html (8,542 bytes)
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