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241. Re: Topband: Noise (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Fri, 27 Nov 2009 10:56:23 -0800; I have a bad pole that arcs "sporadically". A fixed phase and width would be unlikely to work. What would probably work would be the auxiliary 40 MHz receiver as used by Collins. Rick N6RK __________; /archives//html/Topband/2009-11/msg00431.html (7,922 bytes)
242. Re: Topband: 5/8 vertical (score: 1): Author: "Rick Karlquist" <richard@karlquist.com>; Date: Fri, 4 Dec 2009 11:18:41 -0800; I keep seeing this statement on various reflectors, but my tests on 1/4 wave and 1/2 wave verticals show that a 1/2 wave vertical with essentially no radials works as well as a 1/4 wave vertial with; /archives//html/Topband/2009-12/msg00045.html (7,911 bytes)
243. Re: Topband: insulated vs:bare radial wires (score: 1): Author: "Rick Karlquist" <richard@karlquist.com>; Date: Fri, 4 Dec 2009 11:36:58 -0800; The trouble with this theory is that it predicts that 1/2 wave verticals with no radials, 1/4 wave verticals with a few elevated radials, and ground plane antennas shouldn't work very well. Actual te; /archives//html/Topband/2009-12/msg00046.html (8,988 bytes)
244. Topband: Testing Beverages with AM BCB signals (score: 1): Author: "Rick Karlquist" <richard@karlquist.com>; Date: Sat, 5 Dec 2009 13:40:13 -0800; I often use BCB signals as a sanity check for my beverage antennas. I have three of them in a 400 foot equilateral triangle that can be driven at either end to give me beams at 30, 90, 150, 210, 270,; /archives//html/Topband/2009-12/msg00067.html (8,643 bytes)
245. Re: Topband: insulated vs:bare radial wires (score: 1): Author: "Rick Karlquist" <richard@karlquist.com>; Date: Sat, 5 Dec 2009 16:44:10 -0800; power. No, BLE is not still the standard, except maybe at the FCC. Also, Brown's ran out of wire when he reached 113 radials. The FCC later rounded this up to 120. Latter day experts agree that you; /archives//html/Topband/2009-12/msg00070.html (10,824 bytes)
246. Re: Topband: insulated vs:bare radial wires (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Sun, 06 Dec 2009 14:41:03 -0800; There is a study on skywave signals on verticals that is on my web site. I listened to actual received signals off the air and A/B'ed two antennas. In one sense, this is not as precise as you couldn'; /archives//html/Topband/2009-12/msg00079.html (11,633 bytes)
247. Re: Topband: CCD antenna (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Mon, 07 Dec 2009 20:37:51 -0800; I saw this site a few months ago and spent a considerable time studying it. IMHO, much of the information is questionable. I was unable to convince myself that there was any benefit in this concept.; /archives//html/Topband/2009-12/msg00088.html (7,831 bytes)
248. Re: Topband: Edger for burying ground radials ? (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Sat, 12 Dec 2009 08:24:54 -0800; I've had good luck with "Sta-Brite" solder, which is something like 4% silver, and the balance tin. It melts at 100 degrees higher temperature than 63/37 tin/lead, but still within range of conventio; /archives//html/Topband/2009-12/msg00137.html (8,180 bytes)
249. Topband: Europe to California QSO's on SSB last night (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Mon, 14 Dec 2009 07:49:33 -0800; Amazing conditions around 0400Z (Monday UTC, Sunday night local). RA4LW and ES5GP were armchair copy (at least between QSB dips) on SSB and both were easily worked, for my first EU SSB QSO's on topba; /archives//html/Topband/2009-12/msg00173.html (7,072 bytes)
250. Re: Topband: A couple of Beverage questions (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Mon, 14 Dec 2009 07:58:39 -0800; When I first got my QTH in 1997 I immediately put up the longest Beverage I had room for, being about 1300 feet, over 2 wavelengths on 160 meters. This was also the first Beverage I ever built. The f; /archives//html/Topband/2009-12/msg00175.html (7,843 bytes)
251. Re: Topband: 160 RX Loops (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Sun, 20 Dec 2009 08:55:17 -0800; If you want to null out power line noise, the loop circumference needs to be something like 50 feet maximum, and the nulling is better with smaller loops. A small loop needs to be tuned to get reason; /archives//html/Topband/2009-12/msg00223.html (8,704 bytes)
252. Re: Topband: Bev Transmission Loss (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Thu, 24 Dec 2009 08:03:39 -0800; The problem with this concept is that first you have to know your ground parameters. What the NEC4 writers suggest you do to find ground parameters is to first run a wire(s) over ground and make phys; /archives//html/Topband/2009-12/msg00271.html (8,191 bytes)
253. Re: Topband: REVISIT Small Rx Loop (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Fri, 25 Dec 2009 12:16:52 -0800; See: http://www.n6rk.com/loopantennas/NCJ_loop_antenna_N6RK.pdf _______________________________________________ 160 meters is a serious band, it should be treated with respect. - TF4M; /archives//html/Topband/2009-12/msg00281.html (8,093 bytes)
254. Re: Topband: RE66 in the SP test (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Wed, 30 Dec 2009 06:52:33 -0800; Maybe it's just me, but when someone comes back to me with a transmission starting with "EN", my brain wants to decode that as an "R" sent with an extra space after the first dit. I actually hear thi; /archives//html/Topband/2009-12/msg00331.html (7,934 bytes)
255. Re: Topband: Loop Antenna Questions (score: 1): Author: "Rick Karlquist" <richard@karlquist.com>; Date: Fri, 1 Jan 2010 19:46:13 -0800; I found that a 40 foot perimeter square loop, roughly equivalent to your 12 foot diameter round loop had an inferior null to a loop half as big. It did of cource produce about 10 dB more signal (and; /archives//html/Topband/2010-01/msg00022.html (7,772 bytes)
256. Re: Topband: Loud clicks (score: 1): Author: "Rick Karlquist" <richard@karlquist.com>; Date: Fri, 1 Jan 2010 19:56:42 -0800; I recently built a homebrew QSK switch using the Gigavac GH-1 relay in the 12V version at the RSD-12V relay. I tested the GH-1, which is rated at 6 ms, and found that it pulled in in 4 ms, applying 1; /archives//html/Topband/2010-01/msg00023.html (8,087 bytes)
257. Topband: Continued good condx to EU (score: 1): Author: "Rick Karlquist" <richard@karlquist.com>; Date: Sat, 2 Jan 2010 08:57:22 -0800; Friday night local (Sat AM UTC), 10 EU stations were worked in the 02, 03, and 04 hours. Some others were audible, but too weak to call. I finally worked DF2PY and HA5JI after many attempts over the; /archives//html/Topband/2010-01/msg00028.html (7,842 bytes)
258. Topband: Correlation between AM BCB propagation and topband? (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Mon, 04 Jan 2010 19:18:14 -0800; I am writing this at 03150 UTC on Jan 5. About 3/4 hour ago, I was listening to KOH radio on 780 kHz from the San Francisco area, something like 150 miles away. At that time WBBM radio (also on 780 k; /archives//html/Topband/2010-01/msg00052.html (7,615 bytes)
259. Re: Topband: 160, what a night it was for me! (score: 1): Author: "Rick Karlquist" <richard@karlquist.com>; Date: Sat, 9 Jan 2010 13:00:01 -0800; 160 was amazing from the west coast last night, where I worked EU on SSB, which is far more unusual than EU on CW from the east coast. But GM3PPG was heard on 1847 kHz SSB at 0912 and came back on th; /archives//html/Topband/2010-01/msg00095.html (7,830 bytes)
260. Re: Topband: Winter ground rods (score: 1): Author: "Rick Karlquist" <richard@karlquist.com>; Date: Sun, 17 Jan 2010 09:21:55 -0800; I built some beverages with ground rods, which was a huge hassle. I then switched to 6 50 ft radials as Craig suggested. They seem to work as well as ground rods. Rick N6RK __________________________; /archives//html/Topband/2010-01/msg00135.html (7,934 bytes)

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