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21. Re: Topband: Antenna terminations (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Fri, 15 Mar 2013 02:02:59 -0400; Well, those GE silicone sealants are designed to have pretty high resistivity and are designed to be insulators as well as for protection. Main thing, I expect is that the highest temperature that yo; /archives//html/Topband/2013-03/msg00113.html (8,843 bytes)
22. Re: Topband: Using GE silicone as antenna sealant. (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Mon, 18 Mar 2013 17:36:33 -0400; I agree completely!! RTV will outgas acetic acid for a VERY LONG TIME - almost forever! You should try it in a high-vacuum chamber! Especially one that includes an "ion pump" to achieve very high vac; /archives//html/Topband/2013-03/msg00122.html (9,199 bytes)
23. Re: Topband: Fw: Mike, VK6Hd. (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Fri, 12 Apr 2013 09:11:09 -0400; I'm sad to hear that! I worked Mike on 160 MANY years ago for my first VK6 on 160 and one of my proudest 160m accomplishments at that time! I've worked Mike on several other bands, but the 160 contac; /archives//html/Topband/2013-04/msg00020.html (8,284 bytes)
24. Re: Topband: 160 and 80 meter QRN prediction (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sun, 12 May 2013 22:21:16 -0400; Wow!! That takes me back! Haven't seen an 833 amp since I was young!! Charlie, K4OTV Thank you for clarifying that, gentlemen. I should have explained that this was really not for DXing, since from w; /archives//html/Topband/2013-05/msg00081.html (9,521 bytes)
25. Re: Topband: 160 and 80 meter QRN prediction (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sun, 12 May 2013 23:00:48 -0400; Hi, Mike After seeing your post, I googled 833-C and saw your picture on one of the sites! In the "old days" they were 833A and didn't have the big graphite plates! :-) Have fun! BTW - I have a 3-500; /archives//html/Topband/2013-05/msg00083.html (9,623 bytes)
26. Re: Topband: 160 and 80 meter QRN prediction (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Mon, 13 May 2013 00:37:28 -0400; Yikes!! Looks like a dangerous place! Is that your "electric chair" in front of the bench - with the transformers on the floor to light it up? Charlie, K4OTV mine is not much to look at either.... mi; /archives//html/Topband/2013-05/msg00084.html (8,085 bytes)
27. Re: Topband: RFI ferrites (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Fri, 17 May 2013 11:41:57 -0400; Contact Lynne Frye at Kreger Components, Inc. Salem, VA. lynne.frye@kregercomponents.com They are a national distributor for Fair-Rite Products: I have used a LOT of their products over the years in; /archives//html/Topband/2013-05/msg00104.html (8,368 bytes)
28. Re: Topband: Topband Digest, Vol 125, Issue 17 (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Fri, 17 May 2013 20:51:50 -0400; AMEN!! Charlie Cunningham, K4OTV Charles Cunningham, Jr. PE Dean, Kreger Components, Has the best pricing! Better than all distributors, and their website displays available inventory on hand. A 100%; /archives//html/Topband/2013-05/msg00107.html (36,769 bytes)
29. Re: Topband: RFI ferrites (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sat, 18 May 2013 02:30:44 -0400; Very good points, Jim, and I agree! As I said earlier, Lynne and the folks at Kreger can point us to the other Fair-Rite distributors - but I expect that the same advice still applies! In my past exp; /archives//html/Topband/2013-05/msg00110.html (9,595 bytes)
30. Re: Topband: Thanks! (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sat, 18 May 2013 12:17:18 -0400; Good luck, Dean!! I'm sure you can find what you need! (I've even thought about approaching Kreger Components about establishing a small dealership to serve the amateur community) I think that Jim's; /archives//html/Topband/2013-05/msg00113.html (7,912 bytes)
31. Re: Topband: Thanks! (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sat, 18 May 2013 13:35:23 -0400; Hi, Dean Well good luck in your hunt. Over the years I've found many uses for various Fair-Rite cores at HF. If you get the larger beads/tubes thatwill fit over RG-213 etc. you can make excellent 1:1; /archives//html/Topband/2013-05/msg00115.html (9,479 bytes)
32. Re: Topband: Thanks! (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Tue, 21 May 2013 21:55:17 -0400; Well, I haven't used 31 mix material for common-mode chokes or current baluns, because I didn't have any - but it would be my choice. I used higher frequency material because I had plenty of it - som; /archives//html/Topband/2013-05/msg00133.html (10,676 bytes)
33. Re: Topband: Thanks! (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Tue, 21 May 2013 22:19:41 -0400; Well, I've wondered about the heating of 31 material because of the large resistive term. I've used higher frequency material (71 as I recall) because I had lots of it in all shapes and sizes in Desi; /archives//html/Topband/2013-05/msg00136.html (10,125 bytes)
34. Re: Topband: Thanks! (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Tue, 21 May 2013 22:40:53 -0400; Well, Tom I think that 31 material is probably a good choice for cleaning RF from wiring that isn't handling RF power and where there isn't much in the way of shunt impedance for the choke to work ag; /archives//html/Topband/2013-05/msg00137.html (9,954 bytes)
35. Re: Topband: Thanks! (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Wed, 22 May 2013 10:12:48 -0400; All good and valid points, Tom! Thanks! Regards, Charlie, K4OTV That line has shunt impedances. Almost everything does. A main area for shunting impedance is the entrance ground. The individual wires; /archives//html/Topband/2013-05/msg00142.html (12,299 bytes)
36. Re: Topband: Fw: Elwood C. Veregge (1922-2013) W6PBI off the air (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Mon, 3 Jun 2013 10:55:46 -0400; So sorry for your loss. Jim! Seems that your dad had a long, successful and honorable life! Best regards, Charlie Cunningham, K4OTV --Original Message-- From: Topband [mailto:topband-bounces@contesti; /archives//html/Topband/2013-06/msg00010.html (12,364 bytes)
37. Re: Topband: Ferrite Source (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Wed, 5 Jun 2013 09:04:58 -0400; Good morning, Dean! Glad you connected with the folks at Kreger Components! Because of my 20+ years of experience with them and Fair-Rite in my work (mostly 73 material) at Westinghouse, ABB and Elst; /archives//html/Topband/2013-06/msg00014.html (9,334 bytes)
38. Re: Topband: My Turn For a Brain Pick - Sanity Check (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Fri, 7 Jun 2013 16:04:51 -0400; Hi, Jim I'm most suspicious regarding your radial systems: * Are your radials resonant? For the purposes that you are attempting, they need to be, in order to maintain the phase relationship between; /archives//html/Topband/2013-06/msg00022.html (12,414 bytes)
39. Re: Topband: My Turn For a Brain Pick - Sanity Check (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Fri, 7 Jun 2013 16:33:12 -0400; See correction below in RED. Looks like the Reflector wouldn't pass the EZNEC attachment. I'll have to forward that in separate e-mails - not on the reflector Hi, Jim I'm most suspicious regarding yo; /archives//html/Topband/2013-06/msg00024.html (12,607 bytes)
40. Re: Topband: My Turn For a Brain Pick - Sanity Check (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Wed, 12 Jun 2013 17:50:39 -0400; I guess 90 degree phase shift might result in a cardioid pattern? Charlie, K4OTV Optimum phasing of two verticals 1/4 wave apart is never 90 degrees, unless the user for some reason wants a single-po; /archives//html/Topband/2013-06/msg00044.html (10,450 bytes)

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