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381. [TowerTalk] Connectors (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 2 Apr 2001 10:14:32 -0400; Hi Chris, I hate to start another owl thread, but UHF connectors get a bad rap mostly through folklore and misunderstandings. Now there are cheap connectors of both types, that aren't worth a hoot, b; /archives//html/Towertalk/2001-04/msg00026.html (9,190 bytes)
382. [TowerTalk] Connectors (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 2 Apr 2001 19:20:52 -0400; Dimensions of the N are almost identical to the BNC connector. As a matter of fact, if you remove the locking bayonet from a male BNC it works nicely as a "quick connect" for 50 ohm N females. Norma; /archives//html/Towertalk/2001-04/msg00039.html (10,045 bytes)
383. [TowerTalk] Connectors (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 2 Apr 2001 23:27:21 -0400; MFJ received some brownish or tan insulation connectors that were bad. Radio Shack sells some that are (or were) bad. So you can't just go by the color. I had one on something I was testing here. It; /archives//html/Towertalk/2001-04/msg00045.html (9,697 bytes)
384. [TowerTalk] Connectors (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Tue, 3 Apr 2001 20:33:51 -0400; I'm not sure what the failure mode is, because generally by the time I know the connector has a problem the guts are "toast". 275 volts is RMS. Our concern is always peak voltage for dielectric fail; /archives//html/Towertalk/2001-04/msg00072.html (10,807 bytes)
385. [TowerTalk] Connectors (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 4 Apr 2001 13:02:15 -0400; That is very true Guy. There is no headroom at all. I'm amazed everyone keeps discussing and using RMS voltage, which has NOTHING to do with voltage breakdown. It is the peak voltage, and not even t; /archives//html/Towertalk/2001-04/msg00092.html (11,271 bytes)
386. [TowerTalk] Petrezewski (sp?) array .. (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 4 Apr 2001 13:02:15 -0400; The reason you have to use DPDT relays is the system has no balun at each element, which is a VERY bad move in a directional array. If you install choke baluns (aka current baluns) at some point bet; /archives//html/Towertalk/2001-04/msg00093.html (9,542 bytes)
387. [TowerTalk] Connectors (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 4 Apr 2001 17:21:46 -0400; these Amphenol Of course that happens, and not just with cheap parts. One company sold Chinese 3-500Z's that were labeled "made in Russia". A company named "Penta-Labs" (there were a few Penta Labs; /archives//html/Towertalk/2001-04/msg00097.html (9,879 bytes)
388. [TowerTalk] Connectors (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 4 Apr 2001 17:21:46 -0400; Hi Mario, There is no question that statement is NOT correct. Once you trigger the arc, from excessive voltage, the arc will stay until something removes the ionized gas from the arc. A low energy pu; /archives//html/Towertalk/2001-04/msg00098.html (9,786 bytes)
389. [TowerTalk] Connectors (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 4 Apr 2001 21:14:21 -0400; The best argument for UHF connectors is they will work with a typical CB radio amplifier. N connectors will fail with amateur radio amplifiers. My AL-1500 when driven by a 775DSP put out over 5kW of; /archives//html/Towertalk/2001-04/msg00103.html (8,907 bytes)
390. [TowerTalk] Petrezewski (sp?) array .. (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 4 Apr 2001 21:14:21 -0400; I understand the system better now Pete, thanks. But here is a point to consider. While that system probably works, with proper selection of feedline lengths or use of baluns there would be no need; /archives//html/Towertalk/2001-04/msg00104.html (9,966 bytes)
391. [TowerTalk] Petrezewski (sp?) array .. (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 5 Apr 2001 14:21:56 -0400; I'm not trying to re-invent the wheel here, but to make a point we should always keep in mind when dealing with coaxial lines. I think what we often miss is the inside of the shield and outside are a; /archives//html/Towertalk/2001-04/msg00116.html (12,465 bytes)
392. [TowerTalk] Petrezewski (sp?) array .. (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 5 Apr 2001 18:39:54 -0400; A 200 foot tower in the center of my 160 meter four square (no antennas on it) greatly affects the four square, I have to detune the matching network (it is series fed) when I use the four square. 7; /archives//html/Towertalk/2001-04/msg00121.html (9,903 bytes)
393. [TowerTalk] X beam (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 6 Apr 2001 07:48:02 -0400; Is that gain over ground? Or in freespace? 73, Tom W8JI W8JI@contesting.com List Sponsor: ChampionRadio.com - Trylon self-supporting towers, safety equipment, rigging gear, LOOS tension guages & mor; /archives//html/Towertalk/2001-04/msg00140.html (9,515 bytes)
394. [TowerTalk] Cell towers and Ham Radio (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 6 Apr 2001 07:57:42 -0400; Same here. I had an offer to buy my 300 foot tower for $50,000...pay me a monthly $300 property lease fee....plus pay me 25% of the monthly revenue of any systems on the tower. When I got down to re; /archives//html/Towertalk/2001-04/msg00141.html (9,684 bytes)
395. [TowerTalk] Petrezewski (sp?) array .. (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 6 Apr 2001 22:03:01 -0400; Hi Pete, Since you basically want to short the unused dipoles, it would make sense to use an open 1/4 wl line (if the relay could stand the voltage). However, I really prefer feeding all the element; /archives//html/Towertalk/2001-04/msg00159.html (9,015 bytes)
396. [TowerTalk] Concrete for Guy Points (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 9 Apr 2001 21:44:50 -0400; I exclusively use earth anchors. I have since 1970. During the ice storm here, I had 1" of radial ice on everything. You can imagine the stress on a 500 foot long guy line with insulators every 20-o; /archives//html/Towertalk/2001-04/msg00223.html (8,792 bytes)
397. [TowerTalk] Vatican to cut broadcasts over ecological fight (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 9 Apr 2001 21:44:50 -0400; You say there are also toxic and radioactive wastes near the location. Are you making a joke, or is that true? In the USA, the only study linking EM radiation to Leukemia was falsified. When the stu; /archives//html/Towertalk/2001-04/msg00224.html (10,275 bytes)
398. [TowerTalk] Guy Anchors (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Tue, 10 Apr 2001 04:52:40 -0400; You bet. The stress on a normal utility pole would buckle most towers. Even so, I would not downsize the anchors. I'd still use what they use, making sure of course you don't get some light duty anc; /archives//html/Towertalk/2001-04/msg00230.html (7,417 bytes)
399. [TowerTalk] Concrete for Guy Points (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Tue, 10 Apr 2001 10:46:26 -0400; No one should use a four foot long anchor with 1/4 inch EHS, especially on 45G in wet loam soil. Look at the anchor rating! You have to use the correct depth and style anchor, or you are asking for; /archives//html/Towertalk/2001-04/msg00237.html (8,228 bytes)
400. [TowerTalk] Vatican to cut broadcasts over ecological fight (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Tue, 10 Apr 2001 10:46:26 -0400; The cause obviously isn't radio waves, which have been proven time and time again in controlled tests to be harmless. When researches TRY to find a link between RF Exposure and cancers, they can not; /archives//html/Towertalk/2001-04/msg00238.html (10,604 bytes)

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