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141. Re: Topband: 3B9EME (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Tue, 10 Sep 2013 11:33:58 -0400; BTW, Charlie I did work FO0AAA on 160 CW. 03/04/2000 03:59Z, 1829 KHz 73, Charlie, K4OTV <snip> And FYI....there was no receiving amplifier used with that antenna on Clipperton. 73, Charlie, N0TT 1 o; /archives//html/Topband/2013-09/msg00161.html (8,555 bytes)
142. Re: Topband: 3B9EME (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Tue, 10 Sep 2013 13:53:19 -0400; Thanks, Herb! For some reason, I thought that antenna was done by ON4UN, but Earl certainly was an authority on those types of antennas! 73. Charlie, K4OTV The FO0AAA 160 RX antenna was put together; /archives//html/Topband/2013-09/msg00165.html (9,106 bytes)
143. Re: Topband: Delta RX Antenna @ FO0AAA (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Tue, 10 Sep 2013 14:39:26 -0400; Thanks, Doug I guess that explains why I had, in my mind, and memory, associated the FO0AAA antenna, with John, ON4UN. I do know that Earl, K6SE was an authority on those types of antennas! 73, Charl; /archives//html/Topband/2013-09/msg00168.html (7,699 bytes)
144. Re: Topband: 3B9EME (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Tue, 10 Sep 2013 15:36:31 -0400; Hi, Herb I went off and read from Earl's K6SE's writings about the FO0AAA low-band RX antenna. The following is an excerpt from those writings: "It is a close relative of the Pennant and Flag antenna; /archives//html/Topband/2013-09/msg00171.html (9,697 bytes)
145. Re: Topband: Hairpin Matching Coil Questions (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sat, 14 Sep 2013 11:59:03 -0400; Hi, Jim I don't see why the "hairpin" matching coil should be adding BCI. The inverted L above it should be picking much more broadcast signal than the coil! Sounds like your matching coil may have e; /archives//html/Topband/2013-09/msg00200.html (9,103 bytes)
146. Re: Topband: Hairpin Matching Coil Questions - BTW (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sat, 14 Sep 2013 12:12:21 -0400; BTW, Jim The fact that you can't get the feed-point resistance above 27 ohms, sounds like you are just looking at the driving-point resistance of the inverted L in parallels with the inductance of th; /archives//html/Topband/2013-09/msg00201.html (8,841 bytes)
147. Re: Topband: Topband Digest, Vol 129, Issue 23 (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Tue, 17 Sep 2013 09:14:11 -0400; Try Georgia Copper. Their ads suggest that they may carry/supply what you are looking for. You might also check with some of the suppliers of antenna tuners. They seem to use the flat wire (often sil; /archives//html/Topband/2013-09/msg00234.html (10,140 bytes)
148. Re: Topband: Hairpin Matching Coil Questions (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Tue, 17 Sep 2013 20:33:33 -0400; Should work just fine, Mike, since your inverted L is > 1/4 wavelength and has some series inductive reactance. You're tuning out a portion of that series inductance, leaving the remainder to work wi; /archives//html/Topband/2013-09/msg00250.html (10,499 bytes)
149. Re: Topband: Hairpin Matching Coil Questions (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Tue, 17 Sep 2013 22:01:17 -0400; Great! I like the spark gap and the 33K static drain much better between the antenna and ground, that between the antenna and radials as in your first post! I was thinking of sending you a note to th; /archives//html/Topband/2013-09/msg00252.html (10,738 bytes)
150. Re: Topband: Hairpin Matching Coil Questions (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Wed, 18 Sep 2013 14:44:13 -0400; Hello, Jim You seem to be "lost"! First of all, the "thing" that you originally called a "hairpin match" is NOT a "shunt match". The coil, or "hairpin" is in SERIES with the reactance and radiation r; /archives//html/Topband/2013-09/msg00262.html (17,999 bytes)
151. Re: Topband: Hairpin Matching Coil Questions - BTW (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Wed, 18 Sep 2013 15:11:23 -0400; BTW, Jim The Qs that you threw out for the inductor are OUTRAGEOUS! The only reason for raising the Q of the inductor is to reduce its losses that are going to be pretty small across 50 ohms, even at; /archives//html/Topband/2013-09/msg00265.html (15,329 bytes)
152. Re: Topband: Hairpin Matching Coil Questions (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Wed, 18 Sep 2013 15:18:17 -0400; Sorry, I just looked at my own post and I see that the reflector or e-mail changed my superscripts to lower case. The formula is Q(squared) +1 or Q*2 +1 Sorry, Charlie, K4OTV --Original Message-- Fro; /archives//html/Topband/2013-09/msg00266.html (18,675 bytes)
153. Topband: FW: Hairpin Matching Coil Questions - "Shunt"? (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Wed, 18 Sep 2013 16:31:01 -0400; I suppose it could be considered "shunt" matching since the inductor is in parallel with the coaxial feed-line, or 50 ohm point. The point, though, is that that the inductor must resonant with the ca; /archives//html/Topband/2013-09/msg00269.html (16,696 bytes)
154. Re: Topband: 'Hairpin' matching (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Fri, 20 Sep 2013 08:15:51 -0400; Very nice to have all of those collected into one place! Thanks for sharing, Tom! Have a god day! 73, Charlie, K4OTV The excellent web site for calculating matching network values should have been: h; /archives//html/Topband/2013-09/msg00279.html (7,928 bytes)
155. Re: Topband: AutoEZ v2 with Optimizer (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Fri, 20 Sep 2013 08:38:44 -0400; Thanks for sharing, Dan! I've used EZNEC a LOT over the years, and I've done a lot of useful work with it, but I was unaware of AutoEZ. I'll look into it and maybe investigate the paid version as wel; /archives//html/Topband/2013-09/msg00281.html (7,933 bytes)
156. Re: Topband: Measuring Vertical input parameters while installing radials (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Fri, 20 Sep 2013 10:10:33 -0400; Hi, Eddie Nicely done! Looks reasonably professional to me! At the very least, you've made a good effort to quantify your results in a meaningful and repeatable way, with decent tools. No need to tun; /archives//html/Topband/2013-09/msg00283.html (11,683 bytes)
157. Re: Topband: elevated radials (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Fri, 20 Sep 2013 13:26:19 -0400; Hi, Mike You've reminded me that I have pair of 2 amp FS RF ammeters (1950s/1960s era) that I need to hunt up and squirrel away before clearing out the junk around my home and preparing to move out.; /archives//html/Topband/2013-09/msg00288.html (10,159 bytes)
158. Re: Topband: 'Hairpin' matching (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Fri, 20 Sep 2013 14:18:33 -0400; Yes, EZNEC does work!! I've had great success with it over the years. It was great for my home-brew (home-EZNEC-designed) single-feedline 5-band quad. It was great when I was building and tuning it t; /archives//html/Topband/2013-09/msg00294.html (8,451 bytes)
159. Re: Topband: BEACON (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sun, 22 Sep 2013 21:31:34 -0400; What's the objective of your beacon experiment, Don? Charlie, K4OTV My 1 watt beacon is on 1999.5 running at the present time at Chittenango, NY 15 miles east of Syracuse, NY into a 43 foot non reson; /archives//html/Topband/2013-09/msg00318.html (7,486 bytes)
160. Re: Topband: Double L antenna as an alternative for the radial-challenged? (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Wed, 25 Sep 2013 01:25:20 -0400; Hi, Andreas Well, it's interesting. I could try modeling it in EZNEC, Have you tried that? I wonder a bit about how good the cancellation is between the horizontal wires, when the lower one is only 1; /archives//html/Topband/2013-09/msg00335.html (8,847 bytes)

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