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

Total 69 documents matching your query.

61. Re: Topband: metal enclosure (again) (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Sat, 21 Jan 2012 10:07:53 -0600
Guys, The original post/question was from Jon, AA1K. I'm the one who first suggested a mail box. (Please read a little more carefully?). 73, Roy K6XK _______________________________________________ U
/archives//html/Topband/2012-01/msg00241.html (6,441 bytes)

62. Re: Topband: T vert feed (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Mon, 30 Jan 2012 12:15:10 -0600
'Twas stated: "Feedline coax shield 1.7 ohms. The single 1.7 ohms lowers the voltage and even in this case of what appears to be an excellent ground radials system, the coax will carry HALF the count
/archives//html/Topband/2012-01/msg00378.html (7,937 bytes)

63. Re: Topband: T vert feed (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Mon, 30 Jan 2012 12:53:02 -0600
This is the part I'm objecting to: "the coax will carry HALF the counterpoise current and waste most of that power, besides being a link...(etc.)" No, no, nertz. Where did that notion originate? Roy
/archives//html/Topband/2012-01/msg00381.html (6,537 bytes)

64. Re: Topband: question about antenna bandwidth (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Mon, 7 May 2012 12:48:44 -0500
There is an old basic principle to remember about this, "The fewer the components in general, the broader the bandwidth." 73, Roy K6XK _______________________________________________ UR RST IS ... .
/archives//html/Topband/2012-05/msg00077.html (7,756 bytes)

65. Re: Topband: attenuation from foliage... (score: 1)
Author: "Roy" <royanjoy@ncn.net>
Date: Sat, 3 Aug 2013 08:44:07 -0500
Remembering Viet Nam troops had very poor propagation problems due to jungle attenuation. Don't know the frequencies involved. 73, Roy K6XK _________________ Topband Reflector
/archives//html/Topband/2013-08/msg00015.html (6,309 bytes)

66. Re: Topband: vacuum relay keying (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Wed, 15 Nov 2017 06:52:32 -0600
See February 2008 QST, an extensive article. 73, Roy K6XK _________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2017-11/msg00084.html (6,134 bytes)

67. Re: Topband: Air wound coil (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Sun, 2 Sep 2018 17:17:47 -0500
Jim, Maybe a combo of the two methods, that way you can tap up from the bottom of the loading inductor a few turns to get a perfect match for the coax feedline. Plus have the convenience of adjusting
/archives//html/Topband/2018-09/msg00009.html (9,335 bytes)

68. Re: Topband: elevated radials (score: 1)
Author: "Roy Koeppe" <royanjoy@ncn.net>
Date: Sun, 21 Oct 2018 08:18:37 -0500
I do recall reading old books that advised elevated radials should be resonated slightly lower in frequency than the main element. Anyone else recall such? 73, Roy K6XK "I am contemplating 4 elevated
/archives//html/Topband/2018-10/msg00161.html (7,347 bytes)

69. Re: Topband: Loop on the ground as a counterpoise (score: 1)
Author: Roy Koeppe <royanjoy@ncn.net>
Date: Mon, 4 May 2020 12:11:48 -0500
Reminiscent of the DDRR antenna? 73,  Roy   K6XK    Iowa Usually these would be used with a ground rod and 5m vertical element. With the lockdown it's not possible to nip to the shops for a ground ro
/archives//html/Topband/2020-05/msg00013.html (9,343 bytes)

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