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Total 594 documents matching your query.

161. Topband: Question abt gain in bi- vs uni-directional Beverage (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Thu, 4 Jan 2001 23:11:42 -0800
"Recently I was having a discussion with a friend abt adding switches at the terminating resistor in order to switch from uni- to bi-directional. He asked why I just didn't make them bi-directional &
/archives//html/Topband/2001-01/msg00032.html (10,514 bytes)

162. Topband: 160 Meter Propagation (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Sat, 6 Jan 2001 18:32:00 -0800
"However, you (NM7M) (and maybe W4ZV) are going to have to work a lot harder to get me to believe the difference between JA and EU from this QTH can be completely explained by auroral effects." == Th
/archives//html/Topband/2001-01/msg00064.html (9,111 bytes)

163. Topband: 160 Meter Propagation (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Sat, 6 Jan 2001 23:19:33 -0800
"From me to JA is about 20% over land. To EU is about over 55% or 60% land. Given the propagation stations in other geographical areas have across similar land masses, I cannot believe this would acc
/archives//html/Topband/2001-01/msg00067.html (9,317 bytes)

164. Topband: Half slopers mounted short distances from ground. (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Thu, 18 Jan 2001 20:01:12 -0800
Don, WD8DSB wrote about his experiments with the "half sloper" antenna. Modeling shows that the predominent radiating part of the half sloper is the tower itself, rather than the sloping wire. Polari
/archives//html/Topband/2001-01/msg00185.html (7,788 bytes)

165. Topband: Inverted L Matching (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Mon, 29 Jan 2001 08:22:00 -0800
Re Jack, W4NF's inverted vee: An EZNEC model of the antenna with a good ground system like Jack's yields a feedpoint resistance of about 25 ohms. This agrees with his observation of a 2:1 SWR at reso
/archives//html/Topband/2001-01/msg00253.html (7,853 bytes)

166. Topband: Pennant ant. (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Mon, 29 Jan 2001 14:56:00 -0800
"I would like to erect a pennant Rx antenna. it would have to be suspended from my tower which is also a shunt fed vertical on top band. If i feed it to the RX socket on my Ft1K MP am I likely to get
/archives//html/Topband/2001-01/msg00262.html (7,751 bytes)

167. Topband: Goniometers and 160 (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Wed, 31 Jan 2001 08:55:30 -0800
Automatic Direction Finding (ADF) equipment in the old days of avionics used a rotating loop antenna in conjuction with a "sense" antenna to find the direction of a beacon or AM BC station. The recei
/archives//html/Topband/2001-01/msg00273.html (7,396 bytes)

168. Topband: ARRL 160 Contest (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Thu, 30 Nov 2000 21:42:34 -0800
Will, K6NDV and I were planning to operate from the salt lake bed this weekend in the ARRL 160 contest, but unfortunately Will has to work today We are still planning to operate there for the Stew Pe
/archives//html/Topband/2000-12/msg00004.html (6,199 bytes)

169. Topband: Where's New England? (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Mon, 4 Dec 2000 08:42:21 -0800
"Where was California??? Very few stations from west, no WA this year or OR. Really strange." == Worked a couple of other stations in Louisiana, but sorry we missed you, Mike. There was lots of big s
/archives//html/Topband/2000-12/msg00038.html (8,603 bytes)

170. Topband: 160 antennas (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Fri, 22 Dec 2000 09:41:26 -0800
Bill: "i was reading your post to topband tonite. Believe it or not, i built up a inverted "U" today. I had been using a inverted "L".but i wanted to try lengthening the antenna, thus i created a inv
/archives//html/Topband/2000-12/msg00128.html (8,491 bytes)

171. Topband: Stew Perry Topband Distance Challenge (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Sun, 24 Dec 2000 10:52:46 -0800
Hi, Topbanders, As you all know, The Stew Perry Topband Distance Challenge contest is next weekend. Many of you have used my DOS program, DBGRID, to calculate distances and QSO points for the contest
/archives//html/Topband/2000-12/msg00137.html (7,824 bytes)

172. Topband: Topband Web Site (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Sun, 24 Dec 2000 12:31:19 -0800
The Web site at: http://www.topband.net has photos of a number well-known Topbanders and their antennas, including DF2PY, VK6VZ, and 9V1PC. The site is owned by Will, K6NDV and he would like to recei
/archives//html/Topband/2000-12/msg00138.html (6,946 bytes)

173. Topband: Shunt feed - how high is high enough? (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Thu, 28 Dec 2000 02:16:54 -0800
"From answers to a query on Towertalk, as well as some modeling with NEC2, it appears that I can obtain 50+j250 or so at the bottom of a shunt feed wire spaced 30' from my tower with the tap to the t
/archives//html/Topband/2000-12/msg00166.html (10,195 bytes)

174. Topband: DBGWIN (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Thu, 28 Dec 2000 12:42:31 -0800
In an effort to keep the size of DBGWIN.ZIP to a minimum, I assumed everyone would have any incidental files already existing on their hard drive. My error. At least one individual who downloaded DBG
/archives//html/Topband/2000-12/msg00174.html (6,808 bytes)

175. Topband: FlagandPennantAntennas Discussion Group (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Sat, 4 Nov 2000 04:33:22 -0800
FYI, there is a Flag and Pennant antenna e-mail reflector (discussion group) now active, moderated by George Maroti, an avid BC band DXer. To join, go to: http://www.egroups.com/invite/FlagandPennant
/archives//html/Topband/2000-11/msg00024.html (7,111 bytes)

176. Topband: High Z vs Low Z shunt feed tower (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Mon, 6 Nov 2000 09:37:17 -0800
"Is it better to feed this type of tower at a high impedance or low impedance?" == As Tom mentioned, the efficiency will increase if you simply use only one component -- a series (gamma) capacitor. Y
/archives//html/Topband/2000-11/msg00038.html (9,714 bytes)

177. Topband: High Z vs Low Z shunt feed tower (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Mon, 6 Nov 2000 10:58:13 -0800
"That is what I have. One 15kV 200pf door knob cap in series with the shunt." -- Plus one other component -- the 9:1 un-un. == "It seems to me that as long as I can get the tower to take power (reson
/archives//html/Topband/2000-11/msg00040.html (8,890 bytes)

178. Topband: High Z vs Low Z shunt feed tower (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Mon, 6 Nov 2000 14:26:35 -0800
"I measured the transformer with the autek. It seems to be very low insertion loss and doesn't get more than just warm after many minutes of 800 watts." -- If the transformer is getting warm at only
/archives//html/Topband/2000-11/msg00042.html (9,996 bytes)

179. Topband: Inverted L Questions (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Tue, 28 Nov 2000 15:12:07 -0800
"I do have a couple of trees that will give me the 50-60 vertical feet and 100 or so horizontal feet that I need to string it (an inverted L). Is there a formula for figuring the length or is "in the
/archives//html/Topband/2000-11/msg00187.html (9,364 bytes)

180. Topband: 160M Bandpass filter drawing. K0FF (score: 1)
Author: k6se@juno.com (k6se@juno.com)
Date: Mon, 2 Oct 2000 22:34:58 -0700
Regarding methods to attenuate strong BC signals when they are a problem on 160-meters, perhaps a better method would be to design a notch filter tuned to the frequency of the interfering signal. Thi
/archives//html/Topband/2000-10/msg00012.html (7,899 bytes)


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