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1. [WriteLog] PC isolation transformer (score: 1): Author: "ve2lx" <ve2lx@sympatico.ca>; Date: Sun, 3 Feb 2008 11:56:18 -0500; 1: 1 Isolation transformers on PC input ( from transceiver ) and or output for audio TX. What should be the perefered impedance on on both side on each of them. Gilles VE2LX == ______________________; /archives//html/WriteLog/2008-02/msg00010.html (6,550 bytes)
2. Re: [WriteLog] PC isolation transformer (score: 1): Author: "peter Jackson" <peter.jackson17@ntlworld.com>; Date: Sun, 3 Feb 2008 17:06:59 -0000; Transformers out of Telephone dial up PC modem cards work fine. 73 Pete G3KNU -- Original Message -- From: "ve2lx" <ve2lx@sympatico.ca> To: "witelog group" <writelog@contesting.com> Sent: Sunday, Feb; /archives//html/WriteLog/2008-02/msg00011.html (8,393 bytes)
3. [WriteLog] PC isolation transformer (score: 1): Author: "Hal Kennedy" <halken@comcast.net>; Date: Sun, 3 Feb 2008 12:22:09 -0500; The Radio Shack 273-1374 works fine. $3.99. You don't need two. Plug your mic straight into the sound card. Isolate the output of the sound card with a transformer on its way to the rig. Hal N4GG ___; /archives//html/WriteLog/2008-02/msg00012.html (7,458 bytes)
4. Re: [WriteLog] PC isolation transformer (score: 1): Author: "Joe, K8FC" <k8fc@k8fc.com>; Date: Sun, 3 Feb 2008 10:22:37 -0700; 1:1 Audio transformer should be right around: Primary DC resistance = ~51 ohms Secondary DC resistance = ~70 ohms Transformer Impedance = 600-900 ohms Frequency response = 300 - 5000hz /joe k8fc ____; /archives//html/WriteLog/2008-02/msg00013.html (8,218 bytes)
5. Re: [WriteLog] PC isolation transformer (score: 1): Author: "Ric Plummer" <ricp@charter.net>; Date: Sun, 3 Feb 2008 12:38:07 -0500; A second one is helpful if you want to feed audio out of Your rig to the PC for session recording or RTTY receive etc Ric KV1W The Radio Shack 273-1374 works fine. $3.99. You don't need two. Plug you; /archives//html/WriteLog/2008-02/msg00014.html (8,295 bytes)
6. Re: [WriteLog] PC isolation transformer (score: 1): Author: "Ron Hall, Sr." <ronkp2n@earthlink.net>; Date: Sun, 3 Feb 2008 13:09:28 -0500; Gilles ... I have used the Radio Shack transformer Part # 273-1374. It's a 1 to 1 isolation unit and the pri/sec impedance is 1K. Has worked fine for all my homebrew interfaces. I did use transformer; /archives//html/WriteLog/2008-02/msg00015.html (8,568 bytes)
7. Re: [WriteLog] PC isolation transformer (score: 1): Author: "SP5KP" <sp5kp@interia.pl>; Date: Sun, 3 Feb 2008 17:56:00 -0000; Hi Guys. Please look on this link with transformer. http://www.radioshack.com/product/index.jsp?productId=2103994&cp http://www.radioshack.com/product/index.jsp?productId=2103254&cp -- Pozdrawiam VY; /archives//html/WriteLog/2008-02/msg00016.html (10,426 bytes)

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