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1. [TowerTalk] Concrete Drying Time (score: 1): Author: mikemr@nwlink.com (Michael Mraz); Date: Fri, 13 Aug 1999 23:27:10 -0000; Concrete does not "dry," it undergoes a reaction called hydration, which requires water. The longer you can keep the concrete moist, the longer it hydrates, and the stronger it gets. If it dries, the; /archives//html/Towertalk/1999-08/msg00237.html (7,644 bytes)
2. [TowerTalk] TH 11 " dc coil " (score: 1): Author: mikemr@nwlink.com (Michael Mraz); Date: Wed, 8 Jul 1998 23:31:06 -0000; I don't think the BN-4000 has any problems (it's a "current" style balun, unlike the earlier BN-86 that came with the TH-7). There are those who have run 3dB over the legal limit into a TH-11, with a; /archives//html/Towertalk/1998-07/msg00269.html (7,909 bytes)
3. [TowerTalk] blocks (score: 1): Author: mikemr@nwlink.com (Michael Mraz); Date: Fri, 17 Apr 1998 14:36:24 -0000; The Harken marine-grade snatch block rated at 2,250lb safe working load is $168 list. I don't know what you bought, but maybe there's an extra "0" in the working load. The Harken blocks that have 1-1; /archives//html/Towertalk/1998-04/msg00470.html (8,168 bytes)
4. [TowerTalk] Coax in conduit (score: 1): Author: mikemr@nwlink.com (Michael Mraz); Date: Mon, 5 Jan 1998 17:15:26 -0000; A few months ago, there was a thread concerning coax in underground conduit. The consensus was that it's a bad deal, because moisture condenses inside the conduit and the coax sits in a puddle of wat; /archives//html/Towertalk/1998-01/msg00048.html (7,426 bytes)
5. [TowerTalk] 10/15 Duo-Bander (score: 1): Author: mikemr@nwlink.com (Michael Mraz); Date: Mon, 8 Dec 1997 05:54:17 -0000; Hy-gain currently manufactures a relatively new dual-bander, the DB-1217, a trapless open-sleeve design for 12m and 17m. It's marketed as the "WARC" band add-in to a standard tribander. 73 Mike N6MZ; /archives//html/Towertalk/1997-12/msg00172.html (8,650 bytes)
6. [TowerTalk] 10/15 Duo-Bander (score: 1): Author: mikemr@nwlink.com (Michael Mraz); Date: Mon, 8 Dec 1997 15:51:17 -0000; Yes that right, the 10/15 tuning dimensions are in the manual. Sorry for the omission. 73 Mike N6MZ Note that DB-1217 can also be tuned as a 10 / 15 duo-bander. I do not know if the dimensions are pr; /archives//html/Towertalk/1997-12/msg00177.html (8,643 bytes)
7. [TowerTalk] Helicopters (score: 1): Author: mikemr@nwlink.com (Michael Mraz); Date: Mon, 30 Jun 1997 18:47:12 -0000; I had a similar problem with my hilltop location. I called the FAA and they said that the 500 foot AGL limit that applies to fixed-wing does not apply to rotary wing. They suggested that I get the re; /archives//html/Towertalk/1997-06/msg01009.html (8,791 bytes)
8. [TowerTalk] 80 Mtr Yagi on SSV Tower? (score: 1): Author: mikemr@nwlink.com (Michael Mraz); Date: Sun, 6 Apr 1997 03:28:15 -0000; We used a full-size bottom-fed four-square array at VK0IR for 40m (the "Heard Island Special"). Performance was outstanding, and one of the nicest features of the four-square was instant direction sw; /archives//html/Towertalk/1997-04/msg00166.html (7,941 bytes)
9. [TowerTalk] Re: Ground Rods & Ohms (score: 1): Author: mikemr@nwlink.com (Michael Mraz); Date: Fri, 18 Apr 1997 14:32:42 -0000; I rent a Bosch electric jackhammer and take the breaker tip out of the hammer. The socket in the bottom of the hammer is about an inch in diameter and it fits over the top of the ground rod with room; /archives//html/Towertalk/1997-04/msg00554.html (9,035 bytes)
10. [TowerTalk] RE: Braiding Eye into wire rope (score: 1): Author: mikemr@nwlink.com (Michael Mraz); Date: Sat, 19 Apr 1997 13:29:14 -0000; One of my favorite references for splicing lines is "Piloting, Seamanship, and Small Boat Handling" by Chapman. To help my YL learn common knots, I bought her a set of plastic "cheat" cards at the lo; /archives//html/Towertalk/1997-04/msg00592.html (6,976 bytes)
11. [TowerTalk] TH7DX summary (score: 1): Author: mikemr@nwlink.com (Michael Mraz); Date: Wed, 19 Mar 1997 19:04:31 -0000; I upgraded my TH-7 to a TH-11, which is an 11-element log/yagi design for 20/17/15/12/10 meters. I've been *extremely* pleased with the antenna. Send me private email if you want more info. Also, HyG; /archives//html/Towertalk/1997-03/msg00275.html (6,973 bytes)
12. [TowerTalk] TH-6, -7, -11 (score: 1): Author: mikemr@nwlink.com (Michael Mraz); Date: Thu, 20 Mar 1997 01:45:00 -0000; Sorry my earlier post was a little confusing...there is no way to "upgrade" a TH-7 to a TH-11. I should have said that I "replaced" the TH-7 with the TH-11. Also, someone noted that HyGain no longer; /archives//html/Towertalk/1997-03/msg00281.html (6,861 bytes)

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