Search String: Display: Description: Sort:

Results:

References: [ +from:royanjoy@ncn.net: 69 ]

Total 69 documents matching your query.

41. Re: Topband: INV L questions (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Mon, 20 Nov 2006 11:46:46 -0600
About: "...Second suggestion was use 234/f and match with an inductor across the feed to ground. I can't find dimensions for this, however. What is the preferred matching method for those on-list who
/archives//html/Topband/2006-11/msg00128.html (7,361 bytes)

42. Re: Topband: help with new QRNN... (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Tue, 12 Dec 2006 09:06:39 -0600
About: "All - Maybe someone out there has dealt with this specific noise and can help me with possible sources. (etc,)" Sounds exactly like a distant line noise source. It usually gets a soft nature
/archives//html/Topband/2006-12/msg00137.html (6,847 bytes)

43. Re: Topband: ...power line noise (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Fri, 22 Dec 2006 16:01:05 -0600
Asked: "...Right now I'm running about 10 to 15 over S9 at the time. One hundred and sixty meters is useless to me. I have to use my horizontal antenna...(etc.)?" George, It's nicer if you include yo
/archives//html/Topband/2006-12/msg00229.html (6,845 bytes)

44. Re: Topband: beefing an un-un (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Mon, 19 Mar 2007 11:38:06 -0600
About, "Hi Topbanders! If I want to increase my unun's power handling capability, can I simply add one core (glue to cores together), beef up cu wire and use the same number of windings?" Yes. 73, Ro
/archives//html/Topband/2007-03/msg00085.html (6,775 bytes)

45. Re: Topband: 160M vertical and snow (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Tue, 27 Mar 2007 14:51:03 -0600
About, "Hi I am planning putting up a vertical (130ft tower) insulated form the ground...of course. But a the place I want to place it, there is much snow....at least 30 inches of snow at the end of
/archives//html/Topband/2007-03/msg00125.html (6,941 bytes)

46. Re: Topband: 'vacuum relay powering' (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Sun, 1 Apr 2007 16:01:08 -0500
Concerning, "...I am about to purchase relays for a project and I would like to use 12 VDC relays. Reason, my ham radio corner is a bit pressed for room for another PS (or could add to it another tra
/archives//html/Topband/2007-04/msg00009.html (7,515 bytes)

47. Re: Topband: protecting rx input (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Wed, 4 Apr 2007 09:11:29 -0500
Concerning, "... I thought about adding a relay to disconnect and/or ground whatever antenna is connected to the RX input during transmit, but since I will also be working on station mods to allow QS
/archives//html/Topband/2007-04/msg00025.html (7,052 bytes)

48. Re: Topband: base loaded vertical (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Tue, 26 Jun 2007 08:30:11 -0500
Concerning, "Which has better bandwidth for matching this antenna, an L-L step-up L network with two coils that are *not* coupled to each other, or the tapped-coil scheme that I used?" In general, th
/archives//html/Topband/2007-06/msg00053.html (6,464 bytes)

49. Re: Topband: ammeter for INV-L (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Mon, 15 Oct 2007 10:13:08 -0500
About, "Hi All Just getting the inverted L antenna operatinal . I want to use a rf ammeter with it and want to get the right value meter. My L is 165 feet long. Power level is 1500 watts. I have seen
/archives//html/Topband/2007-10/msg00056.html (6,745 bytes)

50. Re: Topband: radial depth (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Tue, 29 Jan 2008 09:47:29 -0600
About, "Hi all - can anyone tell me if there is a depth in ordinary soil that is too deep for radials. I have a field which is currently growing wheat - when we harvest this year I am thinking of dig
/archives//html/Topband/2008-01/msg00196.html (7,071 bytes)

51. Re: Topband: inverted L (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Tue, 4 Nov 2008 10:35:54 -0600
About, "...So am I to leave well enough alone or should we add more radials? This is...(etc.)" The more radials the better. Expect a feedpoint Z of 14 ohms or so with a lot of them. Just use a shunt
/archives//html/Topband/2008-11/msg00034.html (7,675 bytes)

52. Re: Topband: INV L location (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 13 Nov 2008 12:40:08 -0600
"...My interest is DX and I'm guessing there will be some directivity because of the horizontal section. so with that, is there a direction to aim the distal end of the antennas horizontal part?..."
/archives//html/Topband/2008-11/msg00089.html (6,421 bytes)

53. Re: Topband: Insulators for enclosures (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 1 Jan 2009 09:33:18 -0600
Asked: "Can anyone tell me what these small white insulators are called that are on the boxes of the transmit BALUNs on this page. I am talking about the two white ones that the wire connects to with
/archives//html/Topband/2009-01/msg00002.html (6,896 bytes)

54. Re: Topband: Helically wound vert (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Fri, 17 Jul 2009 11:28:58 -0500
"Radiation efficiency is around 60% on 40 meters, 20% on 80 meters, and 7% on 160 meters. For a 23' vertical this is not bad." Over all system efficiency depends upon effective ground system resistan
/archives//html/Topband/2009-07/msg00073.html (6,691 bytes)

55. Re: Topband: T - vertical improvement (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Tue, 21 Jul 2009 09:01:59 -0500
"A couple questions for the group.... 1. Supposedly I will end up with higher radiation resistance and efficiency, and I assume higher effective radiated power. But what am I giving up?" Current maxi
/archives//html/Topband/2009-07/msg00086.html (6,888 bytes)

56. Re: Topband: coax loops... (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Mon, 16 Nov 2009 11:10:34 -0600
Concerning, "...I would like to be the thousandth who asks the same old question - do, in your experience, small coax loops work?...(etc.)" I have had identical results to yours. W8JI et al have disp
/archives//html/Topband/2009-11/msg00359.html (7,121 bytes)

57. Re: Topband: tuner balun (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Thu, 7 Jan 2010 10:24:57 -0600
Asked, "I have a WM. M. Nye 3000 Watt tuner and see that it uses a PI network and Tri-Filar Balun on the output. The Balun is in the circuit on coax, single wire and twin led output and is supposedly
/archives//html/Topband/2010-01/msg00081.html (7,260 bytes)

58. Re: Topband: Resonating a 160M vertical (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Sat, 2 Oct 2010 11:04:59 -0500
"I have a 160 meter vertical (ground plane) that now resonates on 1530 KHz. I want to put a capacitor at the feed point to raise resonance to 1830 KHz. Do I put the capacitor in series with the verti
/archives//html/Topband/2010-10/msg00009.html (7,095 bytes)

59. Re: Topband: IDing RFI (QRNN) source (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Tue, 25 Jan 2011 10:38:46 -0600
About - "...The noise is intermittent, and comes on for roughly 10-15 minute intervals, and when it goes off, it is completely quiet for another roughly 10 minutes. The amplitude peaks are at approxi
/archives//html/Topband/2011-01/msg00148.html (6,662 bytes)

60. Re: Topband: metal enclosure (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Sat, 21 Jan 2012 08:24:24 -0600
"I am totally reworking the feed system on my Inv-L... I have decided that I would like to use a large metal enclosure depending on cost. I need something about 20"L x 16"W x 8"D. Anyone have a good
/archives//html/Topband/2012-01/msg00231.html (7,398 bytes)

Current List: 41 - 60
Page: [1] [2] [3] [4]
This search system is powered by Namazu