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Total 1306 documents matching your query.

261. [Towertalk] 75 ohm hardline cable again (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Mon, 19 Aug 2002 08:56:18 -0600
0.750 inch diameter CATV Hardline has ~0.3+ dB loss at 30 MHz per 100 ft. 0.500 inch diameter CATV Hardline has ~0.5 dB loss at 30 MHz per 100 ft. Loss drops by the square root of frequency, i.e., mu
/archives//html/Towertalk/2002-08/msg00548.html (8,860 bytes)

262. [Towertalk] n4kg posts (double?) (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Mon, 19 Aug 2002 18:50:45 -0600
I've noticed this myself. My 5 year old Pentium / Windows 95 based computer has recently developed the nasty habit of crashing even more often than in the past. I suspect some of my outgoing messages
/archives//html/Towertalk/2002-08/msg00560.html (8,899 bytes)

263. [Towertalk] Antennas and stuff (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Mon, 19 Aug 2002 21:37:05 -0600
The shorter the vertical section of a loaded vertical, the lower the radiation resistance. I believe there is a curve of this in the later ARRL Antenna Books. Remember, a full 1/4 vertical over a per
/archives//html/Towertalk/2002-08/msg00567.html (9,700 bytes)

264. [Towertalk] Trylon raising questions (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Thu, 22 Aug 2002 08:17:32 -0600
My personal rule for Rohn Gin Poles is: NEVER EVER use a Gin Pole to raise antennas. Don't even think about it.... NEVER ! The reason is simple: The gin pole is designed for LIGHT VERTICAL LIFTS. ANY
/archives//html/Towertalk/2002-08/msg00638.html (10,724 bytes)

265. [Towertalk] Attaching Ladder line to a Metal Rod/Mast (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Thu, 22 Aug 2002 07:51:49 -0600
I have an 80M inverted vee supported at the top of a 10 ft mast on my 130 ft tower where I installed a 3 ft cross arm with pulleys at each end. Near the ground, I attached a 5 lb 'window weight' to t
/archives//html/Towertalk/2002-08/msg00639.html (8,435 bytes)

266. [Towertalk] Trylon raising questions (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Thu, 22 Aug 2002 08:17:32 -0600
My personal rule for Rohn Gin Poles is: NEVER EVER use a Gin Pole to raise antennas. Don't even think about it.... NEVER ! The reason is simple: The gin pole is designed for LIGHT VERTICAL LIFTS. ANY
/archives//html/Towertalk/2002-08/msg00640.html (10,697 bytes)

267. [Towertalk] Attaching Ladder line to a Metal Rod/Mast (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Thu, 22 Aug 2002 07:51:49 -0600
I have an 80M inverted vee supported at the top of a 10 ft mast on my 130 ft tower where I installed a 3 ft cross arm with pulleys at each end. Near the ground, I attached a 5 lb 'window weight' to t
/archives//html/Towertalk/2002-08/msg00641.html (8,512 bytes)

268. [Towertalk] Building Hygain Yagis (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Sun, 25 Aug 2002 09:57:57 -0600
Mel, If WIND and / or ICE is a considertion, you may want to find a source of 7/16 inch O.D. aluminum tubing thicker than the 'heavy duty aluminum foil' element tips provided by HyGain. BENT element
/archives//html/Towertalk/2002-08/msg00684.html (7,558 bytes)

269. [Towertalk] Experience with HF-2V w/ Elevated Radials? (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Tue, 27 Aug 2002 11:48:25 -0600
My friend KZ4V had a ground mounted HF2V with 120 radials (~35-40 ft). It played very well on 40M. It SUCKED on 80M (as a DX antenna) where the base loading made it pretty inefficient. For domestic u
/archives//html/Towertalk/2002-08/msg00726.html (9,029 bytes)

270. [Towertalk] vertical mast to vertical mounting hardware? (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Tue, 27 Aug 2002 11:43:27 -0600
I can think of two simple solutions using either a thick plate or angle aluminum or angle steel and appropriately sized U-Bolts or hose clamps. Tom N4KG ______________________________________________
/archives//html/Towertalk/2002-08/msg00727.html (8,657 bytes)

271. [Towertalk] Trylon raising questions (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Tue, 27 Aug 2002 11:51:12 -0600
"NEVER say NEVER" OK, I concede, for LIGHT antennas, raised VERTICALLY alongside a tower, I suppose it is OK to use a GIN POLE for the lifting fixture. Disclaimer: Anyone who bends their gin pole mas
/archives//html/Towertalk/2002-08/msg00728.html (9,426 bytes)

272. [Towertalk] Building Hygain Yagis (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Tue, 27 Aug 2002 12:10:21 -0600
A friend purchased two brand new TH7's a couple of years ago, assembled the elements, but never got them up in the air. He is moving now and I couldn't help but notice that 4 of the element tips had
/archives//html/Towertalk/2002-08/msg00729.html (10,926 bytes)

273. [Towertalk] Building Hygain Yagis (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Tue, 27 Aug 2002 12:10:21 -0600
A friend purchased two brand new TH7's a couple of years ago, assembled the elements, but never got them up in the air. He is moving now and I couldn't help but notice that 4 of the element tips had
/archives//html/Towertalk/2002-08/msg00730.html (10,901 bytes)

274. [Towertalk] Bi-Square Antenna (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Tue, 27 Aug 2002 17:37:31 -0600
One of my favorite wire antennas is a simple 20M dipole (34 ft total) fed with Ladderline. It has a figure 8 pattern from 10 thru 30 meters. Put up 2 or 3 of them at 40 to 60 ft and you will cover th
/archives//html/Towertalk/2002-08/msg00745.html (8,954 bytes)

275. [Towertalk] Tower Buidling 201 (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Wed, 28 Aug 2002 17:21:37 -0600
Joe, "TO DO IT RIGHT", I suggest you FORGET about house brackets and start thinking about a proper concrete base and GUY WIRES, per the Rohn book. As I have stated several times previously, "There is
/archives//html/Towertalk/2002-08/msg00765.html (7,770 bytes)

276. [Towertalk] Inverted L - Thanks for the Help. (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Sat, 31 Aug 2002 06:02:00 -0600
Regarding placement of the 'tail' on an inverted L, I've have the 'feeling' that there is some cancellation in the direction of the tail. Consider a takeoff angle of 45 degrees, through the tail. Dra
/archives//html/Towertalk/2002-08/msg00803.html (7,530 bytes)

277. [Towertalk] Universal aluminum (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Sat, 31 Aug 2002 18:19:45 -0600
I would recommend a Cushcraft D3W WARC band dipole and a Cushcraft D40 dipole for your 80 ft tower. These could be placed at 90 degrees to each other to provide good isolation. They will play VERY WE
/archives//html/Towertalk/2002-08/msg00808.html (6,983 bytes)

278. [Towertalk] Kevlar Guys (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Wed, 31 Jul 2002 17:52:40 -0600
For a short tower, the simple and safe solution is to use 3/16 inch diameter EHS guys with insulators at 3 and 14 ft from the tower. The first insulator needs to be very close to the tower since ther
/archives//html/Towertalk/2002-07/msg00005.html (9,199 bytes)

279. [Towertalk] Fwd: Last Ditch Effort Needed on Tower Bill - June 28, 2002 (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Mon, 1 Jul 2002 04:36:39 -0600
I especially do NOT like limitations on "antenna support structures". Literal interpretation of such laws can prevent one from putting up a push up pole to support dipoles or VHF antennas if a tower
/archives//html/Towertalk/2002-07/msg00029.html (12,919 bytes)

280. [Towertalk] Non-Resonant Guy lengths (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Mon, 1 Jul 2002 19:29:28 -0600
Re: "Non-Resonant Guy Lengths" FIRST, there is NO SUCH THING as NON-resonant Lengths when it comes to conductors. The commonly recommended lengths of 27, 40, 54 ft ARE resonant at 18, 12, 9 MHz respe
/archives//html/Towertalk/2002-07/msg00059.html (8,897 bytes)


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