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Total 120 documents matching your query.

101. Re: [TowerTalk] 4 Square Dipole array: VSWR issue, has anyonemodeled it? (score: 1)
Author: Dinsterdog@aol.com
Date: Sun, 12 Oct 2003 22:18:37 EDT
David, I would build your dipole so that it's resonant point is about 50-70KHz below where you want the array to be and use a Comtek Hybred Coupler to handle the concerns you have on the SWR by dumpi
/archives//html/Towertalk/2003-10/msg00265.html (7,229 bytes)

102. Re: [TowerTalk] Log periodic vs beam (score: 1)
Author: Dinsterdog@aol.com
Date: Tue, 14 Oct 2003 12:28:21 EDT
Tom, I used the T6 for 5 years and a stack of T6's for two years. I could have put up anything on my Wyoming ranch but found the log periodic to have distinct advantages for contesting over longer bo
/archives//html/Towertalk/2003-10/msg00294.html (8,091 bytes)

103. Re: [TowerTalk] One more ground radial question (score: 1)
Author: Dinsterdog@aol.com
Date: Wed, 17 Dec 2003 13:47:14 EST
Jerry, What you need to realize is that using an Inverted L, the more radials you add, the less ground loss you incur which in-turn, shows the true impedance mismatch you have going on between the an
/archives//html/Towertalk/2003-12/msg00488.html (10,028 bytes)

104. Re: [TowerTalk] One more ground radial question (score: 1)
Author: Dinsterdog@aol.com
Date: Wed, 17 Dec 2003 18:07:36 -0500
Gee wiz Rob, Have you ever tried an UNUN? I just love getting blasted by those who teachI've actually used what I suggested and guess what, it worked- There is so much "in your face" talk any more on
/archives//html/Towertalk/2003-12/msg00496.html (8,672 bytes)

105. Re: [TowerTalk] Radials (score: 1)
Author: Dinsterdog@aol.com
Date: Wed, 31 Dec 2003 14:56:31 EST
I would you suggest you look into Gull Wing radials................I know for 80M, the post height was suggested at apprx. 10 feet, I assume for 160M, you would be ok with 20 foot post coming off the
/archives//html/Towertalk/2003-12/msg00826.html (6,971 bytes)

106. Re: [TowerTalk] 160M Inverted L (score: 1)
Author: Dinsterdog@aol.com
Date: Fri, 2 Jan 2004 14:25:24 EST
My Inv L was 124 feet and resonant at 1.825MHz going 70 feet up the Rohn 25 tower and pulled out over 250 feet using nylon rope.......................Good idea to start longer! I used the UNUN to mat
/archives//html/Towertalk/2004-01/msg00028.html (6,824 bytes)

107. Re: [TowerTalk] Problems on a 2el vertical Array (score: 1)
Author: Dinsterdog@aol.com
Date: Fri, 9 Jan 2004 11:48:00 EST
In my experience in building 4SQR array's, the F/B sounds ok, but you might want to check with W0AH who has built a very solid performing 80M 2Element array. I often found that the F/B would vary wit
/archives//html/Towertalk/2004-01/msg00176.html (7,596 bytes)

108. [TowerTalk] Impedance difference on 4080V from Cushcraft? (score: 1)
Author: Dinsterdog@aol.com
Date: Thu, 12 May 2005 14:48:10 EDT
I am going to phase a pair of 4080V verticals by Cushcraft using the W9AD multiband phase system sold by WX0B. But before I install the phased system, I am trying to figure something out about the si
/archives//html/Towertalk/2005-05/msg00281.html (8,461 bytes)

109. [TowerTalk] 4080V test get interesting per W8JI suggestions (score: 1)
Author: Dinsterdog@aol.com
Date: Fri, 13 May 2005 12:07:23 EDT
I have no idea why I didn't test things at the antenna but chalk it up to new born twins.... Here are the 80M results: 3.770Mhz 3.789MHz 3.826Mhz 42 ohm impedance 42 ohm impedance 55 ohm impedance 2:
/archives//html/Towertalk/2005-05/msg00334.html (9,620 bytes)

110. Re: [TowerTalk] 4080V test get interesting per W8JI suggestionscorrection (score: 1)
Author: Dinsterdog@aol.com
Date: Fri, 13 May 2005 12:51:03 EDT
6.972Mhz with radials at resonance with radials, not 9.972Mhz...typo _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Sta
/archives//html/Towertalk/2005-05/msg00336.html (6,785 bytes)

111. [TowerTalk] Grading a ground radial system (score: 1)
Author: Dinsterdog@aol.com
Date: Sat, 14 May 2005 11:04:28 EDT
I'm trying to figure out how well my radial system is performing with test down at antenna feed point: Radials detached: Resonant point w/ 1.6 SWR, 80 ohms impedance, 40Khz bandwidth at 2:1 SWR bell
/archives//html/Towertalk/2005-05/msg00363.html (7,544 bytes)

112. Re: [TowerTalk] Grading a ground radial system (score: 1)
Author: Dinsterdog@aol.com
Date: Sat, 14 May 2005 13:26:22 EDT
The reason I didn't mention the antenna is because I already did last week. Sorry. It is the Cushcraft 4080V and is a 1/4 wave length on 80M. The responses make sense except for one thing. No one yet
/archives//html/Towertalk/2005-05/msg00368.html (8,518 bytes)

113. Re: [TowerTalk] Grading a ground radial system field strength (score: 1)
Author: Dinsterdog@aol.com
Date: Sat, 14 May 2005 18:55:34 EDT
Jim, Thank you for your suggestions. Others have sent me emails agreeing with you. Within what distance would you suggest to measure field strength? What protocol? I would think cranking down the rig
/archives//html/Towertalk/2005-05/msg00376.html (9,438 bytes)

114. Re: [TowerTalk] Monoband Verticals from N0AH (score: 1)
Author: Dinsterdog@aol.com
Date: Sun, 15 May 2005 20:47:01 EDT
RE: 80M 1/4 vertical Depends if you get serious icing in your area. If so, go to the last line of this posting. If not, I'd suggest top loading a homemade 1/4 wave vertical for 80M. It is a compromis
/archives//html/Towertalk/2005-05/msg00416.html (8,167 bytes)

115. Re: [TowerTalk] measuring and using the term impedance (score: 1)
Author: Dinsterdog@aol.com
Date: Sun, 15 May 2005 23:58:56 EDT
K7PUC, Alfred, Call MFJ. I used their 259 analyzer which is an excellent product. Why don't you go buy one and a 4080V antenna and let us all know what you get versus your method of measuring impedan
/archives//html/Towertalk/2005-05/msg00420.html (6,858 bytes)

116. Re: [TowerTalk] Small Yagi Advice (score: 1)
Author: Dinsterdog@aol.com
Date: Sun, 5 Jun 2005 20:51:05 EDT
Tennadyne T-6 Log periodic. Think outside the box. If that's too big, the Cushcraft MA5B. The T-6 is awesome, but if size and weight is a key issue, the MA5B is nice. It has suited me very well in my
/archives//html/Towertalk/2005-06/msg00147.html (8,109 bytes)

117. Re: [TowerTalk] Need Vertical Advice...Want to use for "spotting" (score: 1)
Author: Dinsterdog@aol.com
Date: Mon, 6 Jun 2005 11:58:34 EDT
What about an Inverted L antenna off the tower using a yard arm and pully? if your are just using it for spotting. Multiband transmitting would be another story on the Inv.L. The Hustler 5 BTV is gre
/archives//html/Towertalk/2005-06/msg00155.html (8,445 bytes)

118. Re: [TowerTalk] tower mounted vertical (score: 1)
Author: Dinsterdog@aol.com
Date: Sun, 12 Jun 2005 01:42:13 EDT
Howard, I hear Comet has a new vertical out I read in a recent CQ magazine designed for a mast installation. The artical is very detailed. After reading it, I would not buy one but it is a good write
/archives//html/Towertalk/2005-06/msg00286.html (8,405 bytes)

119. [TowerTalk] folded radials (score: 1)
Author: Dinsterdog@aol.com
Date: Thu, 16 Jun 2005 22:45:58 EDT
I was not sure how folded radials would work in my small backyard while installing my radial system for my W9AD vertical multiband phase system. On antenna one, I had 20 radials working well that wer
/archives//html/Towertalk/2005-06/msg00433.html (8,216 bytes)

120. [TowerTalk] shirt clip microphone?? (score: 1)
Author: Dinsterdog@aol.com
Date: Tue, 5 Jul 2005 16:47:04 EDT
A bit off the subject of tower talk, but hoping someone here would know...for those of us liking our headphones without the heavy boom mics, is their a decent shirt clip or necktie mic out there? I g
/archives//html/Towertalk/2005-07/msg00088.html (7,068 bytes)


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