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21. [Towertalk] Cracked Leg on Rohn 45G (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Tue, 08 Oct 2002 18:59:45 +0000; I am chemical engineer so don't bash me too much but the way I understand it, there are horizontal forces acting on a tower's base, albeit less than the vertical forces. Imagine the tower being blown; /archives//html/Towertalk/2002-10/msg00267.html (15,846 bytes)
22. [Towertalk] Mast Installation (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Tue, 15 Oct 2002 14:55:12 +0000; If I may propose another mast installation method that may be applicable to certain applications is to insert the mast into the top tower section and then raise that entire assembly up into place. We; /archives//html/Towertalk/2002-10/msg00498.html (7,232 bytes)
23. [Towertalk] Commercial 300W Amp (score: 1): Author: kb9cry@attbi.com (Phil - KB9CRY); Date: Tue, 15 Oct 2002 21:56:50 -0500; Neighbors don't want to hear about, don't know anything about, PRB-1. What I used to say, when I lived in a close in neighborhood, is that my station is licensed by the FCC. I transmit "radio signals; /archives//html/Towertalk/2002-10/msg00512.html (10,838 bytes)
24. [Towertalk] Shunt Feed Tower (score: 1): Author: kb9cry@attbi.com (Phil - KB9CRY); Date: Wed, 23 Oct 2002 19:59:39 -0500; If I may point out another item. You mentioned that you're using air variables. Those will be OK as long as you limit your power to 100 watts or so. If you're going to use an amp, then you'll be pump; /archives//html/Towertalk/2002-10/msg00738.html (9,320 bytes)
25. [Towertalk] Burying Coax in Conduit Trench (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Tue, 03 Sep 2002 16:29:17 +0000; I'm no expert, but I either read or personally inferred that one should not bury their grounding wire from the tower ground grid to the shack SPG/electrical service ground in the same trench as the c; /archives//html/Towertalk/2002-09/msg00108.html (7,099 bytes)
26. [Towertalk] FAA Approval (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Mon, 09 Sep 2002 18:43:58 +0000; You only need to get FAA approval if you're within 2 miles (or is that 1 mile) of an airport or over 200 ft (?). The folks at my county's zoning dept. said the same thing until I pointed out the actu; /archives//html/Towertalk/2002-09/msg00335.html (9,229 bytes)
27. [Towertalk] Aluminum Plates (score: 1): Author: kb9cry@attbi.com (Phil - KB9CRY); Date: Wed, 18 Sep 2002 20:23:14 -0500; I've purchased alum. plates from McMaster Carr. They carry different types of aluminum and sizes. Phil -- StripMime Report -- processed MIME parts -- multipart/alternative text/plain (text body -- ke; /archives//html/Towertalk/2002-09/msg00636.html (9,278 bytes)
28. [Towertalk] Can my 40' tower be a 160m vertical? (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Thu, 26 Sep 2002 13:04:40 +0000; QSL on all Jim. Purchase Jeff Briggs, K1ZM's book from the ARRL titled "DXing on the Edge, The Thrill of 160 Meters" In it you'll find all the info and hints to shunt feed your tower. I did the same; /archives//html/Towertalk/2002-09/msg00856.html (11,169 bytes)
29. [Towertalk] Can my 40' tower be a 160m vertical? (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Thu, 26 Sep 2002 13:07:09 +0000; Also Jim, you'll need something to receive on. The shunt fed tower is a vertical and you'll get all sorts of noise. There's a website that has a compendium of lowband beverage, pennants, flags, delta; /archives//html/Towertalk/2002-09/msg00857.html (11,062 bytes)
30. [Towertalk] Can my 40' tower be a 160m vertical? (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Thu, 26 Sep 2002 19:02:27 +0000; The more the merrier, 30 minimum. Length not that critical but 1/4 wavelength at 130 ft. is theoretical best. Most recommend 60 radials and broadcasters go with 120. Last year I have about 30 down (p; /archives//html/Towertalk/2002-09/msg00867.html (11,479 bytes)
31. [Towertalk] Changing towers (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Fri, 27 Sep 2002 13:20:14 +0000; That could work; how much concrete does US Towers want? Do you need to permit the work? If so, and even if not, I'd solicit advise from a structural engineer just to be safe. If you do pour against t; /archives//html/Towertalk/2002-09/msg00878.html (9,727 bytes)
32. [Towertalk] Supressors that pass DC control V. (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Fri, 27 Sep 2002 15:34:08 +0000; I think Jon's got it! Place the DC bias tee on the tower side of the coax suppressor and then run the DC voltage wires into a Polyphaser or ICE rotator control wire suppressor. Now everything should; /archives//html/Towertalk/2002-09/msg00884.html (10,959 bytes)
33. [Towertalk] 8 pole water tight plu for rotor cable. (score: 1): Author: kb9cry@attbi.com (Phil - KB9CRY); Date: Sun, 29 Sep 2002 03:46:12 -0500; I'll let all in on my secret. Buy two 4 prong trailer connectors. They are designed to be used outdoors and to carry voltage. That's what I've been using for years; real inexpensive too! Phil KB9CRY; /archives//html/Towertalk/2002-09/msg00947.html (8,795 bytes)
34. [Towertalk] Ground Rods (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Fri, 02 Aug 2002 13:33:27 +0000; I think I have a problem with this proposal, but I'm no expert so don't flame me to bad. How is the solid copper wire going to be joined to the tower bolts? The only secure and low resistance method; /archives//html/Towertalk/2002-08/msg00029.html (10,538 bytes)
35. [Towertalk] Ground Rods (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Fri, 02 Aug 2002 14:53:34 +0000; I believe they're approved for lower voltage source grounding, like 220VAC or 120 and not for higher voltage sources, like lightning. Phil KB9CRY; /archives//html/Towertalk/2002-08/msg00034.html (9,279 bytes)
36. [Towertalk] CadWeld One Shots (score: 1): Author: kb9cry@attbi.com (Phil - KB9CRY); Date: Fri, 02 Aug 2002 20:28:55 -0500; You can get the Cadwelds from any good industrial electrical supply house. I used the "OneShot" Cadwelds which come with the disposable ceramic mold and welding and starting material. For connecting; /archives//html/Towertalk/2002-08/msg00055.html (8,360 bytes)
37. [Towertalk] HyGain Rotor Start Cap (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Thu, 08 Aug 2002 12:57:43 +0000; These rotator motor starting caps (130 - 156 MFD) are available at Grainger.com for about $3.50, PN 4X059. they may be a little larger than the original and require a little extra wiring and remounti; /archives//html/Towertalk/2002-08/msg00241.html (6,620 bytes)
38. [Towertalk] Grounding the mast (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Thu, 08 Aug 2002 15:34:40 +0000; Most experts (?) agree that one should run a ground jumper wire from the mast to a tower leg before the rotator so that strike energy does not go through the rotator and possibly welding the bearings; /archives//html/Towertalk/2002-08/msg00246.html (8,812 bytes)
39. [Towertalk] Fence fence go away- (score: 1): Author: kb9cry@attbi.com (Phil - KB9CRY); Date: Thu, 15 Aug 2002 05:37:39 -0500; As I've stated before, What does Jim Miller of Comtek Systems say? Contact him; he and I discussed my near-in fence prior to me constructing my 4 sq last year. I just grounded it in a few places and; /archives//html/Towertalk/2002-08/msg00457.html (9,319 bytes)
40. [Towertalk] Sidemounting Concerns (score: 1): Author: kb9cry@attbi.com (kb9cry@attbi.com); Date: Thu, 15 Aug 2002 16:34:26 +0000; Well, guys there is some validity of the concern about a side mounted antenna or other, causing undo stresses on a tower. Wasn't there an article in last month's QST that talked about how most instal; /archives//html/Towertalk/2002-08/msg00468.html (6,912 bytes)

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