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1. Topband: Loss Question (score: 1): Author: "Chortek, Robert L." <Robert.Chortek@berliner.com>; Date: Thu, 25 Oct 2018 17:24:17 +0000; Does anyone know how much power would be lost if a resonant antenna with an Impedance of say, e.g. 36 Ohms is fed with 50 Ohm coax? Is there a good source where I could look up this kind of informati; /archives//html/Topband/2018-10/msg00199.html (7,281 bytes)
2. Re: Topband: Loss Question (score: 1): Author: Wes Stewart <wes_n7ws@triconet.org>; Date: Thu, 25 Oct 2018 10:29:46 -0700; https://ac6la.com/tldetails1.html Thanks! Bob/AA6VB _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _________________ Searchable Archives: http://www.con; /archives//html/Topband/2018-10/msg00200.html (7,752 bytes)
3. Re: Topband: Loss Question (score: 1): Author: Mike Waters <mikewate@gmail.com>; Date: Thu, 25 Oct 2018 12:43:54 -0500; It is impossible to answer you without knowing the length and type of coax. 73, Mike www.w0btu.com _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector; /archives//html/Topband/2018-10/msg00201.html (7,639 bytes)
4. Re: Topband: Loss Question (score: 1): Author: "Chortek, Robert L." <Robert.Chortek@berliner.com>; Date: Thu, 25 Oct 2018 17:49:20 +0000; Hi Mike, That just goes so show you how little I know! I assumed, apparently incorrectly, that there was some loss IN ADDITION to the transmission line loss (which I know how to calculate). In other; /archives//html/Topband/2018-10/msg00202.html (8,830 bytes)
5. Re: Topband: Loss Question (score: 1): Author: donovanf@starpower.net; Date: Thu, 25 Oct 2018 13:52:42 -0400 (EDT); This is an alternative calculator: www.qsl.net/co8tw/Coax_Calculator.htm For 200 feet of RG-213 terminated in a 36 ohm load, the additional cable loss at 1.8 MHz is only 0.026 dB . 73 Frank W3LPL --; /archives//html/Topband/2018-10/msg00203.html (7,799 bytes)
6. Re: Topband: Loss Question (score: 1): Author: Wes Stewart <wes_n7ws@triconet.org>; Date: Thu, 25 Oct 2018 10:58:07 -0700; Here's a bit more from Dan, AC6LA, about this: https://ac6la.com/swrloss.html Wes N7Ws That just goes so show you how little I know! I assumed, apparently incorrectly, that there was some loss IN AD; /archives//html/Topband/2018-10/msg00204.html (10,124 bytes)
7. Re: Topband: Loss Question (score: 1): Author: donovanf@starpower.net; Date: Thu, 25 Oct 2018 14:07:45 -0400 (EDT); Hi Bob, As Wes points out, the AC6LA calculator is overly simplified and not very accurate. Despite that, the answer to your question remains the same: The additional loss caused by a 50 ohm coaxial; /archives//html/Topband/2018-10/msg00205.html (9,505 bytes)
8. Re: Topband: Loss Question (score: 1): Author: Wes Stewart <wes_n7ws@triconet.org>; Date: Thu, 25 Oct 2018 11:33:59 -0700; Whoa. I said no such thing. The AC6LA calculator is definitely not simplified and/or inaccurate. Wes N7WS Hi Bob, As Wes points out, the AC6LA calculator is overly simplified and not very accurate; /archives//html/Topband/2018-10/msg00206.html (10,063 bytes)
9. Re: Topband: Loss Question (score: 1): Author: "Chortek, Robert L." <Robert.Chortek@berliner.com>; Date: Thu, 25 Oct 2018 18:37:13 +0000; I think Frank misspoke and meant this calculator was oversimplied: https://www.qsl.net/co8tw/Coax_Calculator.htm Types of Coax Cable and Line Loss Calculator - qsl.net<https://www.qsl.net/co8tw/Coax_; /archives//html/Topband/2018-10/msg00207.html (12,143 bytes)
10. Re: Topband: Loss Question (score: 1): Author: donovanf@starpower.net; Date: Thu, 25 Oct 2018 14:56:24 -0400 (EDT); Wes, Sorry, I mis-spoke about which calculator is which... But my clear message remains unchanged: The additional loss caused by a 50 ohm coaxial cable feeding a 36 ohm load is insignificant at 1.8 M; /archives//html/Topband/2018-10/msg00208.html (10,804 bytes)

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