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101. [TowerTalk] Re: 40 meter 3 Element Yagi (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Fri, 28 Feb 1997 00:08:12 -0500 (EST); Jim, The first YO file below is for my existing 3 element 40M Yagi. The second file is for the same antenna with a fourth element added to significantly improve the VSWR bandwidth of the antenna per; /archives//html/Towertalk/1997-02/msg00514.html (9,889 bytes)
102. HDR-300 (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Mon, 6 Jan 1997 10:46:34 -0500 (EST); Jim, There is at least one "REAL rotor" available on the market! Its called a prop-pitch anything you -- or anyone else on here -- is likely to turn. You can purchase complete systems from K6NA. Glen; /archives//html/Towertalk/1997-01/msg00092.html (7,157 bytes)
103. 48 Ft Booms (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Mon, 6 Jan 1997 20:35:34 -0500 (EST); Hi Gary! Three years ago I was presented with an "opportunity" when a 100+ MPH microburst damaged many of my antennas. I took advantage of this "opportunity" to rebuild all of them! I was very surpri; /archives//html/Towertalk/1997-01/msg00124.html (7,665 bytes)
104. TRUE NORTH QUERY (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Tue, 7 Jan 1997 15:46:05 -0500 (EST); Hi Mick! There are many quick and dirty ways! - Determine true South, and true north is exactly opposite... (pardon my plagiarism...) - Use a compass, determining the declination ("offset") from a US; /archives//html/Towertalk/1997-01/msg00155.html (9,369 bytes)
105. TRUE NORTH!!!!! (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Wed, 8 Jan 1997 16:05:27 -0500 (EST); Ed, I believe its important that we all speak the same language, and its become apparent that the users of the reflector are confused about the correct term to use to describe the angle from true nor; /archives//html/Towertalk/1997-01/msg00199.html (9,309 bytes)
106. 48 Ft Booms (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Wed, 8 Jan 1997 21:58:44 -0500 (EST); Hi Gary, Nice to see a message without the N.... word! My replies to your queries follow each of your questions below: I've never had a dissimilar metals problem with galvanized steel and aluminum. T; /archives//html/Towertalk/1997-01/msg00208.html (8,264 bytes)
107. Prop Pitch brush noise (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Wed, 15 Jan 1997 20:38:38 -0500 (EST); Hi John, Yes, the brushes are very noisy if you do not bypass them with capacitors! The value is non-critical, but certainly much less than 0.5 uF! I use any convenient value between .001 and .01 uF; /archives//html/Towertalk/1997-01/msg00336.html (7,584 bytes)
108. gamma's (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Wed, 15 Jan 1997 21:02:23 -0500 (EST); Until recently I've used gamma matches on all of my big Yagis. On 20M I used a 4 foot length of 1/2" diameter x 0.058" wall tubing for the Gamma rod. The capacitor was made from RG-217 (aka RG-14) co; /archives//html/Towertalk/1997-01/msg00337.html (8,151 bytes)
109. Prop-pitch (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Thu, 16 Jan 1997 21:01:14 -0500 (EST); Hi Phil! Yes, the small prop-pitch has a 9576:1 reduction ratio. The most desirable version uses a plug-in motor easily removed by unscrewing a retaining ring. A less desirable version also uses a pl; /archives//html/Towertalk/1997-01/msg00363.html (9,163 bytes)
110. Prop-pitch (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Fri, 17 Jan 1997 07:09:18 -0500 (EST); Hi Phil, My answers follow your questions below: The aluminum shell is held in place by screws around the periphery of the shell. The shell may be a little snug, but it will come off! The notched rin; /archives//html/Towertalk/1997-01/msg00368.html (8,090 bytes)
111. 4130 Cromolly Mast (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Sun, 19 Jan 1997 19:07:08 -0500 (EST); John, Dillsburg Aeroplane Works in Dillsburg PA always has a huge stock of 4130 Chrome-Moly steel tubing. 73! Frank W3LPL donovanf@sgate.com -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html; /archives//html/Towertalk/1997-01/msg00399.html (6,819 bytes)
112. Tower refinishing (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Tue, 10 Dec 1996 00:02:12 -0500 (EST); Bill, First, obtain a free copy of "Painting Galvanized Structural Steel" from the American Galvanizers Assn 303-750-2900 They recommend cleaning the surface with a wire brush to remove dirt and loos; /archives//html/Towertalk/1996-12/msg00138.html (9,301 bytes)
113. Antenna failure (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Wed, 11 Dec 1996 10:37:36 -0500 (EST); Hi Randy! Sorry to hear about your misfortune, at least it happened between major contests! Bill, N3RR made the W6QHS mods to all of his antennas prior to installation, including his 205CAs. You can; /archives//html/Towertalk/1996-12/msg00153.html (6,738 bytes)
114. Suggestions, 3 ele 40M Beams? (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Wed, 11 Dec 1996 11:19:35 -0500 (EST); If any of you are interested in the design details of my homebrew 3 element 40M Yagis, I'll be pleased to share them. They are big, heavy and require a prop-pitch or an equivalent large rotator. They; /archives//html/Towertalk/1996-12/msg00154.html (9,508 bytes)
115. Rohn bolts (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Tue, 17 Dec 1996 21:51:47 -0500 (EST); A further caution about stainless bolts: Not only do you run the risk of seizing the threads of stainless steel bolts by over-tightening, the threads of a stainless bolt are much more easily damaged; /archives//html/Towertalk/1996-12/msg00298.html (7,529 bytes)
116. DRSI Help..... Please!! (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Tue, 17 Dec 1996 21:42:58 -0500 (EST); Rod, I do have a schemaqtic for the DRSI PCPA2, which I will mail to u tomorrow. 73 Frank W3LPL donovanf@sgate.com -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@co; /archives//html/Towertalk/1996-12/msg00300.html (6,748 bytes)
117. YO Design Parameters for W3LPL 15M 6L Yagi (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Thu, 26 Dec 1996 23:37:54 -0500 (EST); Anyone out there interested in high performance monoband Yagis??? I'll prime the pump by sharing the YO file for my 6 element 15M beam on a 48 foot boom. Of course, I have YO files for all of my Yagi; /archives//html/Towertalk/1996-12/msg00455.html (8,212 bytes)
118. YO File for W3LPL's 3 Element 40M Yagis (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Sat, 28 Dec 1996 16:57:12 -0500 (EST); This e-mail contains the YO file for the full size 3 element 40M Yagis on 48 foot booms at W3LPL, one at 190 feet and the other at 100 feet. These antennas have been in use for 25 years with excellen; /archives//html/Towertalk/1996-12/msg00475.html (9,713 bytes)
119. YO File for W3LPL's 5 Element 20M Yagis (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Sun, 29 Dec 1996 00:17:29 -0500 (EST); This e-mail contains the YO file for the 5 element 20M Yagi on a 48 foot boom at W3LPL. Five of these antennas have been in use for the last several years at 50, 100 and 200 feet; operated individual; /archives//html/Towertalk/1996-12/msg00484.html (8,027 bytes)
120. YO File for 10M 8 Element Yagi on 47 ft Boom (score: 1): Author: donovanf@sgate.com (Frank Donovan); Date: Mon, 30 Dec 1996 23:22:59 -0500 (EST); Several folks asked if I had a decent 10M antenna... This 8 element Yagi does very well! One eagle eyed reader noticed a typo in the T-match rod length in the Note file for my 6 element 15M Yagi (I s; /archives//html/Towertalk/1996-12/msg00518.html (7,894 bytes)

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