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141. [Towertalk] Cracked Leg on Rohn 45G (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Tue, 8 Oct 2002 12:07:41 -0600; Obviously we are in disagreement over the magnitude of the HORIZONTAL Forces at the Base of a Guyed Tower. Please explain the origin of the horizontal forces you are concerned about acting on the bas; /archives//html/Towertalk/2002-10/msg00266.html (13,956 bytes)
142. [Towertalk] Cracked Leg on Rohn 45G (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Tue, 8 Oct 2002 13:45:58 -0600; SNIP No PE. The pieces of angle iron are painted and much thicker than a tower leg. N4KG What lateral loads? The tower is guyed at 20, 40, 60, 75 ft. with torgue arms at 40 and 75 ft. Are you saying; /archives//html/Towertalk/2002-10/msg00269.html (10,196 bytes)
143. [Towertalk] Rohn 25G Bracketing (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Tue, 8 Oct 2002 16:57:58 -0600; Yes, R25 does 'flex' with 3 sections above the last support but that is pretty standard for installers. You get used to it or get out of the business. I know one guy who will go 40 ft above the last; /archives//html/Towertalk/2002-10/msg00277.html (8,638 bytes)
144. [Towertalk] Cracked Leg on Rohn 45G (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Tue, 8 Oct 2002 22:11:33 -0600; N4KG response inserted below. This is valid for a tower with only ONE set of guys where the guys act as a pivot point. The force at the base will be reduced by the ratio of the spacing between the gu; /archives//html/Towertalk/2002-10/msg00286.html (9,184 bytes)
145. [Towertalk] choices (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Tue, 8 Oct 2002 22:57:28 -0600; 40M dipoles work well for DX at 60 ft and above. 50 ft is 'OK' but not great. 80M dipoles *begin* to 'play' around 90 ft or so. I'm pretty happy with my 130 ft high dipoles. Anything less is a cloud; /archives//html/Towertalk/2002-10/msg00289.html (9,472 bytes)
146. [Towertalk] Choices (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Wed, 9 Oct 2002 21:53:09 -0600; ANY antenna is better than NO antenna :-) My 130 ft high 80M dipoles are better than my old 100 ft inverted vee which was better than my 70 ft high dipole which was better than my previous 70 ft high; /archives//html/Towertalk/2002-10/msg00337.html (11,519 bytes)
147. [Towertalk] Choices (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Wed, 9 Oct 2002 23:26:48 -0600; N4KG comments added below. It's even worse than that...Not only do the W1's enjoy an EXCLUSIVE first hour to EU due to their earlier sunrise, but they can hear hundreds more of the super weak Europea; /archives//html/Towertalk/2002-10/msg00341.html (9,795 bytes)
148. [Towertalk] choices (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Thu, 10 Oct 2002 17:45:41 -0600; imagination. Inverted Vees have more radiation off the ends which subtracts from the radiation broadside to the wire. Also, Ground LOSSES go up as the ends are brought closer to the earth, at least b; /archives//html/Towertalk/2002-10/msg00383.html (8,798 bytes)
149. [Towertalk] Calculating guy distance for rotating towers (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Thu, 10 Oct 2002 17:23:34 -0600; A SCALED Drawing will tell you everything in a few minutes. Tom N4KG ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Intern; /archives//html/Towertalk/2002-10/msg00384.html (10,752 bytes)
150. [Towertalk] Yagi Rotational Center (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Mon, 14 Oct 2002 09:17:32 -0600; Recently, there was a recommendation made to the effect of running a string from the reflector tip diagonally across the boom to the end director tip, claiming (if I remember correctly) that the poin; /archives//html/Towertalk/2002-10/msg00466.html (8,412 bytes)
151. [Towertalk] Is an 80m Rotatable Dipole Worth it?? (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Mon, 14 Oct 2002 18:32:04 -0600; A 70 ft high Inverted Vee suffers from near field ground losses due to the ends being closer to the ground so a FLAT dipole 'should be' a more efficient radiator. A vertically polarized Delta Loop mi; /archives//html/Towertalk/2002-10/msg00489.html (8,778 bytes)
152. [Towertalk] Is an 80m Rotatable Dipole Worth it?? (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Mon, 14 Oct 2002 18:32:04 -0600; A 70 ft high Inverted Vee suffers from near field ground losses due to the ends being closer to the ground so a FLAT dipole 'should be' a more efficient radiator. A vertically polarized Delta Loop mi; /archives//html/Towertalk/2002-10/msg00490.html (8,763 bytes)
153. [Towertalk] yagi spacings (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Tue, 15 Oct 2002 09:07:29 -0600; I like to have ~1/3 of the mast INSIDE the tower to minimize the bending moment applied to the upper portion of the tower. Some people cut diagonals to place a rotor inside R25. Another good position; /archives//html/Towertalk/2002-10/msg00496.html (10,575 bytes)
154. [Towertalk] CC XM240 vs 402CD (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Tue, 15 Oct 2002 12:32:05 -0600; I hope WZ7I doesn't mind my public response to his question about the differences between the XM240 and 402CD. Thought this may be of interest to others as well. The XM240 is considerably more robust; /archives//html/Towertalk/2002-10/msg00501.html (7,968 bytes)
155. [Towertalk] installing tall masts (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Tue, 15 Oct 2002 23:27:58 -0600; that resides above the mast for your 15M beam is THIN WALL ALUMINUM (a fact you neglected to state) and NOT a THICK WALL STEEL MAST. FWIW, we use the opposite approach at Field Day, inserting 20 ft; /archives//html/Towertalk/2002-10/msg00517.html (10,923 bytes)
156. [Towertalk] Roof mount tower questions... (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Tue, 15 Oct 2002 23:33:39 -0600; One way to reduce the 'turnover' load on the roof is to GUY the roof mounted tower, especially if the tower is over 10 - 15 ft. Insulated guys are preferable, otherwise, use insulators every 10-11 ft; /archives//html/Towertalk/2002-10/msg00518.html (7,695 bytes)
157. [Towertalk] flat top vs sloper (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Thu, 17 Oct 2002 12:40:55 -0600; If you are east of the Rockies, you need something that favors EUROPE. I would suggest a vertically polarized Delta Loop which has an oval pattern (maybe 3 dB F/S) and should work well everywhere. Ai; /archives//html/Towertalk/2002-10/msg00563.html (8,218 bytes)
158. [Towertalk] Coax recommendations (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Thu, 17 Oct 2002 12:59:01 -0600; SNIP there. SNIP How much more power does LMR400 handle than RG213? How much less loss than RG213? How does it achieve these interesting results in the same size cable? Tom N4KG _____________________; /archives//html/Towertalk/2002-10/msg00564.html (8,449 bytes)
159. [Towertalk] lmr 400 question (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Sun, 20 Oct 2002 10:26:06 -0600; On Sun, 20 Oct 2002 01:18:37 -0400 Ronald KA4INM Youvan Sounds like a good idea to me. N4KG HUH? My RG213 cables seem to be holding up OK after 10 to 20 years service. Replacing every six months seem; /archives//html/Towertalk/2002-10/msg00654.html (9,689 bytes)
160. [Towertalk] 40m ant (score: 1): Author: n4kg@juno.com (n4kg@juno.com); Date: Mon, 21 Oct 2002 07:52:01 -0600; My recommendation is for a horizontal dipole at 100 ft, preferably rotatable, or a pair at right angles to each other. I worked my first 300 countries on 40M using various rotary dipoles at 80 ft. To; /archives//html/Towertalk/2002-10/msg00680.html (7,325 bytes)

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