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References: [ +from:fisher@hp-and2.an.hp.com: 99 ]

Total 99 documents matching your query.

81. Hygain 52' Crankup - good for me? (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Mon, 1 Jul 1996 08:37:21 -0400; Scott I have one concern about adding much of a mast to the setup - even when cranked down, the mast will add to the overturning moment, reducing the structural capacity below what the manufacturer c; /archives//html/Towertalk/1996-07/msg00004.html (12,749 bytes)
82. Hygain 52' Crankup - good for me? (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Mon, 1 Jul 1996 10:34:30 -0400; Steve 1. The numbers I'm talking about do equate to 8-10 dB total gain for the XA, which is their published spec, and which is not unrealistic for an antenna with a boom length of .5 lambda, which is; /archives//html/Towertalk/1996-07/msg00006.html (9,117 bytes)
83. Side mount rotor limit stops? (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Wed, 3 Jul 1996 09:41:12 -0400; Interesting question. Doug of IIX says to just let the tower limit the rotation. Jack, W1WEF, tried this approach and had a problem when he changed to a T2X from a Ham-4. Seems the brake engaged on; /archives//html/Towertalk/1996-07/msg00025.html (7,557 bytes)
84. trap losses (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Wed, 3 Jul 1996 09:50:08 -0400; Right Pete! I saw the same article. I guess an antenna with 1.66 dB loss is still better than no antenna; hence the losses are 'Minimal"!! The losses in a parallel coax trap are high for two reasons:; /archives//html/Towertalk/1996-07/msg00026.html (6,968 bytes)
85. KLM KT34A CORROSION PROBLEM (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Mon, 8 Jul 1996 10:17:48 -0400; Here are two ideas; take your pick; caveat antennator... 1. Use non-metal-bearing joint compound (NOALOX) at the joints. I've never tried this; it's NOT what KLM reccommends, but it has been used and; /archives//html/Towertalk/1996-07/msg00064.html (7,204 bytes)
86. Possible interaction: 402-CD, 10-30mhz log? (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Mon, 22 Jul 1996 09:11:31 -0400; The 40-2CD is known to 'almost' have a resonance on 17 meters, where the loading coils are almost chokes. This may spoil the log's performance/SWR on that band. Best bet would be to model the whole m; /archives//html/Towertalk/1996-07/msg00140.html (6,980 bytes)
87. formula needed (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Tue, 23 Jul 1996 10:28:13 -0400; Pete With the exception of the effect of losses, you can add 1/2 wavelengths of coax to your tuning stub with no effect. Losses will change things slightly, but you'll be using low-loss stuff anyway,; /archives//html/Towertalk/1996-07/msg00149.html (6,414 bytes)
88. using house as a guypoint (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Tue, 30 Jul 1996 11:44:42 -0400; Bill 1. I am not a mechanical engineer. What follows is my opinion only. That being said, I'd ask why you are pursuing an elevated guy point for the house guy. The mast will have to support a large b; /archives//html/Towertalk/1996-07/msg00184.html (8,001 bytes)
89. Hello! (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Mon, 3 Jun 1996 08:49:57 -0400; Greetings, other tower-monkeys! I'll introduce myself to the new reflector with a question: Does anyone manufacture a self-supporting climbable rotating tower section for use as a mast? I remember a; /archives//html/Towertalk/1996-06/msg00004.html (7,104 bytes)
90. Hello! (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Mon, 3 Jun 1996 11:40:49 -0400; Steve Actually, I think the back-to-back bearings, and the mast between them, would have to support the full moment from the antennas and tower sections above - enough so that I'd be reluctant to cli; /archives//html/Towertalk/1996-06/msg00007.html (6,908 bytes)
91. Field Day 40 Mtr ant (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Tue, 4 Jun 1996 08:21:14 -0400; There was a talk at Dayton in 1995 that essentially stated that at Field day, height was better than forward gain in field day antennas. Get 'em up high, and dipoles play FB!! -Tony, K1KP, fisher@hp-; /archives//html/Towertalk/1996-06/msg00016.html (6,408 bytes)
92. Rohn shackles/T-Bars (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Wed, 5 Jun 1996 08:21:37 -0400; Terrific Question!!! I have the same problem. One side of my Rohn 45 tower is guyed with 5/16 EHS, because the guy anchor is close to the base (30' out from 68' tower). The 5/16 thimble won't fit thr; /archives//html/Towertalk/1996-06/msg00024.html (6,856 bytes)
93. Concrete (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Thu, 6 Jun 1996 09:35:36 -0400; Tim 3x3x4 comes out to 1.33 cubic yards. I vote for the wheelbarrows. I've done it both ways, and it takes a lot more time to mix that much concrete. Plus, you usually measure the ingredients by shov; /archives//html/Towertalk/1996-06/msg00032.html (7,506 bytes)
94. Rohn Thrust Bearings (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Wed, 12 Jun 1996 08:09:34 -0400; No, they don't come with much grease. Yes, they can be. Remove the screw; be careful not to loose the balls that fall out; squirt white lithium grease into the hole; replace the screw... -Tony, K1KP,; /archives//html/Towertalk/1996-06/msg00074.html (6,805 bytes)
95. Delta Loop (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Thu, 13 Jun 1996 06:47:35 -0400; Gary I've used a single delta loop on 80 meters, with the apex at 70 feet. I think this would scale well to a height of 45 feet on 40 meters. I fed it at a lower corner for vertical polarization. Thi; /archives//html/Towertalk/1996-06/msg00086.html (6,900 bytes)
96. Masts and stacking considerations (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Fri, 14 Jun 1996 10:34:13 -0400; Bryan I considered the hi-strength mast route, then changed my mind in favor of a sidemount. The cost is comparable, but the advantages of being able to climb to the feedpoint of the top antenna, as; /archives//html/Towertalk/1996-06/msg00094.html (8,027 bytes)
97. Masts and stacking considerations (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Fri, 14 Jun 1996 12:54:48 -0400; I think some mechanical engineers would disagree with you on this one. Increasing the diameter dramatically increases the section modulus - and therefore the maximum moment the mast can withstand. It; /archives//html/Towertalk/1996-06/msg00097.html (8,206 bytes)
98. Phased Vertical info (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Mon, 24 Jun 1996 16:04:35 -0400; Dick The references you want are the ARRL Antenna Handbook, and ON4UN's "Low-Band DXing" books, first or second editions. Both books have lots of stuff on vertical arrays and feeds... -Tony, K1KP, fi; /archives//html/Towertalk/1996-06/msg00177.html (6,412 bytes)
99. HQ-1 MINI-QUAD (score: 1): Author: fisher@hp-and2.an.hp.com (Tony Brock-Fisher); Date: Thu, 27 Jun 1996 10:13:47 -0400; BobI don't have a mini-quad, but in general I would warn about using silicone sealer in electronics applications. The standard silicone bathtub sealer sold at Home Depot generates acetic acid as part; /archives//html/Towertalk/1996-06/msg00187.html (7,221 bytes)

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