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41. [TowerTalk] PVC and RF (score: 1): Author: 2@vc.net (2); Date: Fri, 31 Aug 2001 06:33:11 -0700; // Apparently, there are different types of PVC. Some melt in a microwave oven. Some don't. However, ABS is a plastic that consistantly has a low D-factor, so it is ok with RF. cheers, Brian - R. L.; /archives//html/Towertalk/2001-08/msg00725.html (9,782 bytes)
42. [TowerTalk] halfwave verticals -Elevated (score: 1): Author: 2@vc.net (2); Date: Fri, 31 Aug 2001 06:33:14 -0700; // Since the end-feed Z of a half-wave vertical is typically c. 1000-ohms, even one 1/4 wave counterpoise makes a sufficient ground. OTOH, with 1/4 wave verticals, which have a thirty-something ohm; /archives//html/Towertalk/2001-08/msg00726.html (8,365 bytes)
43. [TowerTalk] half wave vertical (score: 1): Author: 2@vc.net (2); Date: Fri, 31 Aug 2001 06:33:17 -0700; // I built one for 15m. It seemed to work OK. At times, I could hear my dit making the 24,000 mile round trip. cheers, Ted - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List Spons; /archives//html/Towertalk/2001-08/msg00727.html (7,111 bytes)
44. [TowerTalk] PVC and RF (score: 1): Author: 2@vc.net (2); Date: Fri, 31 Aug 2001 06:33:13 -0700; // Black plumbing pipe is usually ABS. Gray and white are often PVC. ABS is good with RF. PVC seems to be a maybe. cheers, Tom - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List S; /archives//html/Towertalk/2001-08/msg00728.html (7,425 bytes)
45. [TowerTalk] Impedance Matching Losses (score: 1): Author: 2@vc.net (2); Date: Fri, 31 Aug 2001 06:41:35 -0700; // True // A half-wave antenna exhibits zero reactance at it's resonant frequency. of // When matched with the venerable L-network, little power is lost because operating Q is always minimal, cheers; /archives//html/Towertalk/2001-08/msg00730.html (7,814 bytes)
46. [TowerTalk] halfwave verticals -Elevated (score: 1): Author: 2@vc.net (2); Date: Fri, 31 Aug 2001 08:04:18 -0700; // Is lower angle radiation better below 20m? - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems, Trylon Titan tow; /archives//html/Towertalk/2001-08/msg00735.html (9,180 bytes)
47. [TowerTalk] What about hams with small lots??? (score: 1): Author: 2@vc.net (2); Date: Fri, 31 Aug 2001 18:58:02 -0700; // In my experiences, for 160m operation from a smallish lot, the end-fed wire antenna works better than anything except a half-wave end-fed wire supported by a balloon. By feeding the antenna from; /archives//html/Towertalk/2001-08/msg00759.html (9,392 bytes)

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