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Total 476 documents matching your query.

41. Re: Topband: Spam on the Reflector! (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Wed, 19 Jun 2013 14:26:21 -0400
HI, Keith Thanks for the info. I know that I did receive the "Jim Koshmider" e-mail just this morning and I did click on it to see what it was and got no warning. Wish I had seen your post first!! An
/archives//html/Topband/2013-06/msg00073.html (8,565 bytes)

42. Re: Topband: Common sense email security (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Wed, 19 Jun 2013 15:04:30 -0400
Well, I don't remember trying to open the kink - just deleted the e-mail, as I recall, which is what I'd normally do with e-mails that I don't understand. So, maybe I "escaped"! I hope so! Charlie, K
/archives//html/Topband/2013-06/msg00077.html (12,358 bytes)

43. Re: Topband: Spam on the Reflector! (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Wed, 19 Jun 2013 15:38:48 -0400
Thanks, Gary I have both Malware Bytes and Spyware Blaster on my machines, so I'll run those to be sure. Thanks! Charlie, K4OTV The one from Jim was SPAM, originating from Peru (IP address 190.40.217
/archives//html/Topband/2013-06/msg00079.html (10,120 bytes)

44. Re: Topband: TX antenna improvements (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sat, 6 Jul 2013 14:33:39 -0400
Hi, Neil that salt marsh, I really expect that moving the far end of the "flat-top" up 20' wouldn't make any real difference. I don't think I'd bother! 73, Charlie, K4OTV Looking for advice? My TX an
/archives//html/Topband/2013-07/msg00002.html (8,107 bytes)

45. Re: Topband: Somebody mentioned Quads (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Fri, 26 Jul 2013 20:37:25 -0400
All true! Charlie, K4OTV --Original Message-- From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of donovanf@starpower.net Sent: Friday, July 26, 2013 8:13 PM To: topband Cc: herbs@vitel
/archives//html/Topband/2013-07/msg00092.html (10,987 bytes)

46. Re: Topband: Height of antenna and takoff angle - Titan II site 571-5 (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sun, 28 Jul 2013 11:34:10 -0400
I expect that the main advantage of a discone antenna is bandwidth. Charlie, K4OTV --Original Message-- From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Rick Stealey Sent: Sunday, J
/archives//html/Topband/2013-07/msg00125.html (8,882 bytes)

47. Re: Topband: Postings during topband off season (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sun, 28 Jul 2013 15:45:22 -0400
Hi, Rick Remember it's winter in the southern hemisphere. Some careful listening in early morning, before or around, sunrise, can sometimes offer some interesting tidbits from "down under"! 73 Charli
/archives//html/Topband/2013-07/msg00134.html (7,586 bytes)

48. Re: Topband: best core material? (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Mon, 5 Aug 2013 14:14:25 -0400
Hi, Jim Yes, I gathered that it was a receiving loop. I built one a few years ago and used 73 mat'l for the transformer because it's what I had. Worked quite well. It was also a delta-shaped "Kaz" an
/archives//html/Topband/2013-08/msg00045.html (11,230 bytes)

49. Re: Topband: best core material? (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Mon, 5 Aug 2013 14:24:05 -0400
BTW, Jim I assume that 18:1 is the impedance ratio, and the turns ratio is of the order of 4:1 or so Charlie, K4OTV Sorry - didn't make it crystal clear that this is a Delta shaped variant of a EWE a
/archives//html/Topband/2013-08/msg00048.html (11,018 bytes)

50. Re: Topband: best core material? (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Mon, 5 Aug 2013 14:28:32 -0400
When I did mine, I had used up all my binocular cores that were large enough, so I taped two tubular cores together side-by-side to make a binocular core. A little more room to wind, and maybe a litt
/archives//html/Topband/2013-08/msg00050.html (13,525 bytes)

51. Re: Topband: best core material? (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Mon, 5 Aug 2013 14:45:12 -0400
BTW, Jim I think you will be pleased with that loop! Mine was 40' long X 10' high and it was an excellent receive antenna for 160, 80, 40 and 30 m. If you model it in EZNEC, you will find that the im
/archives//html/Topband/2013-08/msg00054.html (12,960 bytes)

52. Re: Topband: best core material? (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Mon, 5 Aug 2013 15:31:49 -0400
Hi, Jim Well, seems that I may have borrowed the 40X10 dimensions from somewhere. Interesting thing, is, if you are into modeling things with EZNEC, as I am, you can play with the dimensions quite a
/archives//html/Topband/2013-08/msg00057.html (17,027 bytes)

53. Re: Topband: best core material? (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Mon, 5 Aug 2013 15:36:44 -0400
By the way, Jim. My loop was only about 3' high on the bottom 40' run and about 13' at the apex. Charlie, K4OTV Thanks to all that replied - VERY informative information as well as anecdotal evidence
/archives//html/Topband/2013-08/msg00058.html (11,275 bytes)

54. Re: Topband: Effect of trees- tree appreciation (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Thu, 8 Aug 2013 11:15:03 -0400
I share your opinions and sentiments, Greg! Over the years I've worked some pretty good stuff around the world on 160 with inverted- Ls held up by trees, running a bit less power than you - abt 500-6
/archives//html/Topband/2013-08/msg00091.html (8,201 bytes)

55. Re: Topband: Effect of trees- tree appreciation (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Fri, 9 Aug 2013 16:51:45 -0400
You're a man after my own heart, Greg! I never worried so much about the "Dbs". As a DXer, I generally listened a lot, and I found that on 160, if I could hear them - more often than not, I could wor
/archives//html/Topband/2013-08/msg00103.html (10,434 bytes)

56. Re: Topband: Condo Owners 160m poem. - A poem for DXers. (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Fri, 9 Aug 2013 19:54:56 -0400
Sunset and evening star, And one clear call for me! .... With apologies to Alfred Lord Tennyson - From "Crossing the Bar" 73/DX Charlie, K4OTV Hope you dont mind my use of artistic license.... Cecil
/archives//html/Topband/2013-08/msg00108.html (8,043 bytes)

57. Topband: FW: Vertical vs inverted L question/opinions (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sat, 10 Aug 2013 18:00:53 -0400
Hi, Don I would definitely favor the Inverted-L configuration to maintain the high-current portion of the a antenna as a vertical radiator with the current maximum distributed as high as possible. Pr
/archives//html/Topband/2013-08/msg00123.html (9,590 bytes)

58. Re: Topband: Effect of trees- tree appreciation (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sat, 10 Aug 2013 18:33:03 -0400
Hi, Bill I've met you in the past - I believe at some of the "Swan" meetings with K4CIA and others here in Raleigh. I was first Licensed as KN4OTV in 1957, when I had just turned 13. I saw your post
/archives//html/Topband/2013-08/msg00124.html (10,383 bytes)

59. Re: Topband: CAT5 twisted pair (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Mon, 12 Aug 2013 17:12:59 -0400
Jim, I completely agree with Jim Brown! I noted those 2:1 transformers the other day and meant to send you a note to say that I wouldn't bother! That little bit of mismatch loss won't make any differ
/archives//html/Topband/2013-08/msg00154.html (7,945 bytes)

60. Re: Topband: CAT5 twisted pair (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Mon, 12 Aug 2013 18:09:26 -0400
J OH...okee dokee on not needing the 2:1 xfmr other Brown _________________ Topband Reflector
/archives//html/Topband/2013-08/msg00157.html (9,658 bytes)

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