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1. [TowerTalk] Beverage f/b (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Sun, 21 Oct 2001 11:33:07 +0000; Guys, I'm beginning to think that leaves on the trees is adversly affecting the directivity of my beverages.. or the phase of the moon or...? All 7 of them don't seem to show the directivity on 160/8; /archives//html/Towertalk/2001-10/msg00397.html (8,115 bytes)
2. [TowerTalk] Re: [RTTY] AL-1200 arcing during QRO RTTYcontesting (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Fri, 05 Oct 2001 19:30:17 +0000; ACOM 2000a handles 1500w RTTY with no sweat-- but a lot of heat. Brought room temp up to 90+ degrees with windows open, outside air temp in the 70's and a ceiling fan. No fooling mother nature. That; /archives//html/Towertalk/2001-10/msg00128.html (11,047 bytes)
3. [TowerTalk] TLW Program (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Thu, 04 Oct 2001 11:45:06 +0000; Guys, About 8 months ago QST had an article on the TLW program. It also comes on the CD-ROM for the 19th Edition of the ARRL antenna handbook. It allows one to do all kinds of neat things. Given a me; /archives//html/Towertalk/2001-10/msg00094.html (7,163 bytes)
4. [TowerTalk] 160m shunt feed followup (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Tue, 02 Oct 2001 11:28:05 +0000; I'll take Tom's word on this. I haven't used this for antennas with feedlines built in --e.g. the GAP verticals(?). I think plotting the value of X vs frequency as suggested, will tip you off. If it'; /archives//html/Towertalk/2001-10/msg00025.html (9,251 bytes)
5. [TowerTalk] 160m shunt feed followup (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Mon, 01 Oct 2001 16:51:24 +0000; You can back out the value of X using the SWR and value of Z. The formula is in the AUTEK manual. The sign of it is easy to determine. First find the resonant freq. If your freq of interest is higher; /archives//html/Towertalk/2001-10/msg00011.html (8,426 bytes)
6. [TowerTalk] Shortened Dipole on 160M L Antenna (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Tue, 25 Sep 2001 11:46:44 +0000; K7GCO Here we go again. You have no credibility. You claim to have done all sorts of things when your were 5 years old in the 1930's. It is stupid to say we should build expensive prototypes today be; /archives//html/Towertalk/2001-09/msg00663.html (8,480 bytes)
7. [TowerTalk] 160 bandwidth (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Sat, 22 Sep 2001 15:45:03 +0000; Overheard on 40 meters SSB. "Something is wrong with your 160M antenna. Mine covers the whole band with a 2:1 or less SWR. Yours only has about 2:1 SWR bandwidth of 75 KHz" 73 de Brian/K3KO List Spon; /archives//html/Towertalk/2001-09/msg00591.html (6,842 bytes)
8. [TowerTalk] MIT Radiation Lab Series (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Thu, 20 Sep 2001 00:11:41 +0000; Those of you interested in a bit of history might try and find the MIT Radiation Lab book titled Transmission Lines, Antennas and Wave Guides. This book summarized the type of work done there during; /archives//html/Towertalk/2001-09/msg00558.html (8,507 bytes)
9. [TowerTalk] Shortened Dipole on 160M (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Wed, 19 Sep 2001 19:47:52 +0000; K7GCO. Wrong philosophy. Try the products first in the model and if it doesn't provide any improvment throw it in the trash. Your design first by prototype philosophy is not what any engineering firm; /archives//html/Towertalk/2001-09/msg00556.html (9,667 bytes)
10. [TowerTalk] Shortened Dipole on 160M (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Wed, 19 Sep 2001 14:20:11 +0000; This formula assumes a pure resistive load. You don't have that. Second, where does one get 90 ohm coax good for 1.5Kw? Third, it has always bothered me that you are not in my log after 40 years! I a; /archives//html/Towertalk/2001-09/msg00544.html (14,149 bytes)
11. [TowerTalk] Shortened Dipole on 160M (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Wed, 19 Sep 2001 11:29:49 +0000; What's wrong with your bridge? Show me the math that says this is so. de Brian/K3KO K I used only 1/4 wave of 90 ohm coax as that reached List Sponsored by AN Wireless: AN Wireless handles Rohn tower; /archives//html/Towertalk/2001-09/msg00540.html (8,412 bytes)
12. [TowerTalk] A3WS vs Force 12 (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Fri, 14 Sep 2001 03:56:51 +0000; There is something interesting afoot here. Look at the ads for trap antennas. There are precious few antennas which are rated more than 1500 watts PEP. Under the old rules for power output they used; /archives//html/Towertalk/2001-09/msg00440.html (9,218 bytes)
13. [TowerTalk] Wind and Paranoid vs. Overkill (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Tue, 11 Sep 2001 12:15:47 +0000; Now for some reality. You won't be happy with your antenna. Your tower will grow additional antennas in the future. You antennas will get larger. If you are lucky, designing it for 110Mph will permit; /archives//html/Towertalk/2001-09/msg00395.html (7,507 bytes)
14. [TowerTalk] Paranoid vs. Overkill (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Mon, 10 Sep 2001 18:39:00 +0000; I guess this is "typically" true for some crank-ups. However, if the crank up design has a foot or latch which carries the load after erection, then then cable strength is not limiting. EZ way towers; /archives//html/Towertalk/2001-09/msg00372.html (8,485 bytes)
15. [TowerTalk] Quad Element Tuning (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Sat, 08 Sep 2001 22:05:15 +0000; Also had problems with adding 12m quad to a 10-15-17-20M 4 element GEM quad. These four bands coexisted very well even with a single feedline. Looked at it in AO and the patterns on all four bands we; /archives//html/Towertalk/2001-09/msg00319.html (11,630 bytes)
16. [TowerTalk] Quad Element Tuning (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Sat, 08 Sep 2001 10:44:14 +0000; Steve, Have you tried tuning the Force 12 coil/hairpin combo on their 40M yagi antennas? Equally a pain. IMHO potential quad owners need a tilt over tower, a HAZER tower or a friend with a cherry pic; /archives//html/Towertalk/2001-09/msg00303.html (9,352 bytes)
17. [TowerTalk] Quad Element Tuning (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Fri, 07 Sep 2001 15:41:09 +0000; Paul, Here are the "tuning" instructions GEM quad supplied. All elements except driven elements have a two wire stub hanging down shorted at bottom. Stub lengths of 15" on 20M, 12" on 15" and 12" on; /archives//html/Towertalk/2001-09/msg00278.html (12,170 bytes)
18. [TowerTalk] EZ way tower and Mast (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Fri, 07 Sep 2001 13:27:07 +0000; Main concern is when the tower is being tilted. Put too much extra weight at a large 15' moment arm and you might be in a grey area. I don't know if it is OK or not. However, I had an EZway tower wit; /archives//html/Towertalk/2001-09/msg00271.html (9,260 bytes)
19. [TowerTalk] Resonance of loaded Parasitic Elements (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Thu, 06 Sep 2001 12:58:24 +0000; I'd be very leery of measuring the resonant freq of this loaded element close to the ground. The resonant freq of a loaded 40M 402cd changes many hundreds of KHz from the ground to 70'. It measures t; /archives//html/Towertalk/2001-09/msg00209.html (11,149 bytes)
20. Fw: [TowerTalk] What about hams with small lots??? (score: 1): Author: alsopb@gloryroad.net (alsopb); Date: Tue, 04 Sep 2001 22:33:45 +0000; Once again the theory is outvoted by personal endorsements. Frankly, models can save you a lot of time by having you NOT put up something that won't be an improvement. Chances are quite good if you m; /archives//html/Towertalk/2001-09/msg00150.html (14,525 bytes)

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