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1. [TowerTalk] Top Hat Switch (score: 1): Author: ford@cmgate.com (Ford Peterson); Date: Mon, 16 Jul 2001 19:15:56 -0500; I'm building a full sized, base fed (insulated), 80 meter vertical antenna. The design I am playing with uses a top hat to tune the lower portion of 80. Removing the top hat tunes about 3850 or so. T; /archives//html/Towertalk/2001-07/msg00250.html (8,498 bytes)
2. [TowerTalk] Top Hat Switch (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 16 Jul 2001 20:53:53 -0400; You are begging for problems. The relay is at a voltage point, and worse yet you have a vertical! The voltage can be as much as twice the voltage on a dipole at the end, assuming you have a good gro; /archives//html/Towertalk/2001-07/msg00251.html (9,113 bytes)
3. [TowerTalk] Top Hat Switch (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Mon, 16 Jul 2001 19:12:37 -0700; _________________________________________________________ At my former QTH I had a full size 80 meter vertical with a motorized roller inductor at the base and it worked fine. It was in the circuit a; /archives//html/Towertalk/2001-07/msg00253.html (8,235 bytes)
4. [TowerTalk] Top Hat Switch (score: 1): Author: k3nd@yahoo.com (GALE STEWARD); Date: Tue, 17 Jul 2001 04:32:20 -0700 (PDT); I agree 100%. My 80M top loaded vertical is "long" in the SSB portion of the band so a single series capacitor yields a 1:1 match at 3790. An L-network (one cap, one coil) gives a 1:1 match at 3510.; /archives//html/Towertalk/2001-07/msg00254.html (8,206 bytes)
5. [TowerTalk] Top Hat Switch (score: 1): Author: richard@karlquist.com (Richard Karlquist); Date: Wed, 18 Jul 2001 22:16:25 -0700; Tom brings up some valid points. I have been using a 90 foot vertical with a top hat for several years. It has latching vacuum relays at the 30 and 60 foot levels, so that I can make it look like a 3; /archives//html/Towertalk/2001-07/msg00292.html (9,835 bytes)
6. [TowerTalk] Top Hat Switch (score: 1): Author: tao@skypoint.com (Tod Olson); Date: Thu, 19 Jul 2001 12:04:13 -0600; See, already we are getting some additional creative ideas (Tom's vacuum relay solution being credited as the first). I had forgotten about the fact the we already use traps in horizontal antennas so; /archives//html/Towertalk/2001-07/msg00304.html (9,278 bytes)

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