Return-Path: Received: from mtain-me01.r1000.mx.aol.com (mtain-me01.r1000.mx.aol.com [172.29.96.137]) by air-da05.mail.aol.com (v127_r1.1) with ESMTP id MAILINDA051-85e74ba16a4235c; Wed, 17 Mar 2010 19:48:18 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-me01.r1000.mx.aol.com (Internet Inbound) with ESMTP id B7222380000A0; Wed, 17 Mar 2010 19:48:16 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Ns2xF-0003dU-AY for rs_out_1@blacksheep.org; Wed, 17 Mar 2010 23:47:13 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Ns2xE-0003dL-SZ for rsgb_lf_group@blacksheep.org; Wed, 17 Mar 2010 23:47:12 +0000 Received: from smtp820.mail.ird.yahoo.com ([217.146.189.247]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1Ns2xC-00083W-JE for rsgb_lf_group@blacksheep.org; Wed, 17 Mar 2010 23:47:12 +0000 Received: (qmail 25178 invoked from network); 17 Mar 2010 23:47:03 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btopenworld.com; h=DKIM-Signature:Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=6lJPDCPmu/+DYvRdmHfsfiUAl+Mcn/8UvbxeyBAFXOPpm0CDrg6KvbE8rJiWwaUIHo3dmy8dirlPtSUVye0o5jgA3T/EhMG9k0r4OXdVHX5JoJffkp8uZpO1/yrK2MxZ0WcdBZUxmMoHjj2szVIWVgQAizHKxaPMZ+0JiIJSBy8= ; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=btopenworld.com; s=s1024; t=1268869623; bh=/8VWXqqkPtkjsz89DN/o3pQJC9kjtjEg6yAzK5BSGaw=; h=Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=1sxaOS7jlzMqOh7sPGL+ZXQ0r+6n0TFzgLZaR2yqoOZ8UtcMaXpV00BPHfDTG2VEbp+3Be6ItGvIHebcGMl05w6swiinXu+MG8oPIY3VRq4pWCXX54tmcyZDH+DH4XO789tL0rHfVvN7F/ZYaO+tr8YwzsGFeU2mdO1IAwTb5ks= Received: from JimPC (james.moritz@86.180.204.156 with login) by smtp820.mail.ird.yahoo.com with SMTP; 17 Mar 2010 23:47:03 +0000 GMT X-Yahoo-SMTP: Cxhli3eswBD1ozmtAojhjrja86kWx0Qm9tycD5QR1DKWrOLgjJcXkw-- X-YMail-OSG: Q4jN3toVM1kljZpczAUs9mLVvx59TXXmdclqyS_4N22sSYdtOmKlQ2_oizWGz.sGtNcs6YLryfUibmDvRtHapptWWEZTd7QINsg5G7nHR997hZe.9z2bWlBF0dRYVP3jg_DQ7KuxBH1povS9LLe_goy2J1nNeucpW_JLD3fZSD_RdG48kv.SsJoZMa4QDhXIsUxTu2s.PlWxbtTCrwwbY9Lrc.Aszsr.WNK9PRF412g.88n6nd3TBAdJ6YOxV6tL X-Yahoo-Newman-Property: ymail-3 Message-ID: From: "James Moritz" To: References: <910844.27140.qm@web86505.mail.ird.yahoo.com> <4B9FDFA7.7090208@gmx.com> <38A51B74B884D74083D7950AD0DD85E82A1B5D@File-Server-HST.hst.e-technik.tu-darmstadt.de> <4BA00630.9070300@abelian.org> <38A51B74B884D74083D7950AD0DD85E82A1B63@File-Server-HST.hst.e-technik.tu-darmstadt.de> In-Reply-To: <38A51B74B884D74083D7950AD0DD85E82A1B63@File-Server-HST.hst.e-technik.tu-darmstadt.de> Date: Wed, 17 Mar 2010 23:47:04 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18005 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18005 DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,UNPARSEABLE_RELAY=0.001 Subject: Re: AW: LF: 8.97kHz antennas Content-Type: multipart/mixed; boundary="----=_NextPart_000_0208_01CAC62C.259653F0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.1 required=5.0 tests=MISSING_OUTLOOK_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G X-AOL-VSS-INFO: 5400.1158/56373 X-AOL-VSS-CODE: clean X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m265.1 ; domain : btopenworld.com DKIM : pass x-aol-sid: 3039ac1d60894ba16a406f20 X-AOL-IP: 193.82.116.20 ------=_NextPart_000_0208_01CAC62C.259653F0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit Dear Stefan, LF Group, DK7PC wrote: ...>Jim, have you seen the output wave form? If it is not rectangular, it might be a problem if high accuracy is needed. You know, i have a switching mode PA... The soundcard output from the Spec Lab digimode terminal is a sine wave, about 2v pk - pk from my PC. But a simple limiting amplifier between soundcard output and gate driver input gives a quite accurate 50% duty cycle square wave - see attachment. Cheers, Jim Moritz 73 de M0BMU ------=_NextPart_000_0208_01CAC62C.259653F0 Content-Type: image/png; name="limiter_gate_driver.png" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="limiter_gate_driver.png" iVBORw0KGgoAAAANSUhEUgAAA7YAAAG9AQMAAAAbbHgxAAAABlBMVEX///8AAABVwtN+AAAA CXBIWXMAABcRAAAXEQHKJvM/AAAK50lEQVR42u3dTW/byBkA4BmSMemtII5co2sUXotO3K2P 3p7SwIhpJQh86GFz2+NukR+g7F4UIKhGLhNrt0Esb4uiKIrEPfSen8BkA/RSoIf+AaZZoFcF 6UFFBKv8MGVS4vB7OGtneIljQnrMeWdecjivKACYbCLgLndzbegeBGD3v1LV7tYD230uVe1q nxr7AO4KStUukvYBaLFwbwJw4xWq1oVjpNhuq4EqP17H1Rm4aFMFOjqu3NU27Xau3AVIt5u4 pemVu2Pb3bUqd/n5iLvcjdzkSb7NPKfuAnGPGfXLWlntzF3ucpe73OUud7nLXe5yl7ukbWIR duyMabpwMiTs6Z5cSNdsE/a069zlLne5y9330b1rYYLbNWm6X66QXKxRdSVGrsDA3W6YX8Io V+lQdW80zLs40n1ItV/pR4RxpOxTHUf6bbOtY4KL6LWz/onZvhK1o267Cr123mqY7eXIfv6P dv0S3TypkPKkQNeVSC4ENMfvV5OofiXb8Y2aOpXkttZJ4+gm1XHUek6YHymfUZ0f3eiR3DZV t0Wa/yo61flvCyyIkf1K0YFJs1+BBUg4XmDqVI8XYJKr0XO7Q8J9FfWE30fiLne5y13ucpe7 3OUudxm5sFBl5jl0cWI716i0M3e5G3bVUCcfX3i3xqiductd7nKXu9zlLnfPhdsdJblwOi8q 052/Hpx1xekqWdgt9jk+Vq61mujiaNdMnJVzl7vc5S53GbliEXe2SmTefX1CcGX3N8q2+/yc jO5HQE9yv4ck1y3lUV7UPqjYdU/eSm+5arfr/LAIpKyu2kl0zTi3aXpuI6OLjMR+9SyuX7kB zukmjKPHMeNIhmPP1XB2V4tv595rbPVILuh67k5WV7JWG/HtjO3jvUV0nQArvczHW1uxVj8A ie4m0XUCrLyQdD17vpKS8yQiuk6A7XyVxxWSXYXougHOnp9Vyfpo9kJ/xu1cwf+ZkN2mmcdF /cRxZNyIGUd+is7sPkucHz347STOheNcrpXoHoix7lmAM7k4cf5rkOa/p27TzOXCXkK/MkBN julXZwHO6M59aGDeFaKPV3FdL8Cd7K6e6MJod8V1vQAb2dzmOPG+ysQi3FcxNz3XDbCUNV/l v59z2s5egBm4boAZuHaAof1z9W7TlIeIgSsP1fsaAxeOV2o6Axd0ry6MK3SB7zbdGvHqXblC t+vekzx9j+H0mWgnVbpyhe7njOIbdLtX6yxcOF5dZeHa+WrEwm2aosXC7ea5n1Pc9a+gq3b9 C8qqXf8Cumq3C5i40wlSxW6u+UIJbq75UQlurvlgcTff/Le4m2++X9zNd3/DczsS0ZV7Vrxr h1f9+8Gh6ey97t7vwmld+LBGdFd+jWJdN7x7e979q11gTxtcVkjlCstEF12Od93w9vd09z4h xplcAZLbWUPxrhvevgI8V90e1v94/AT++0NM2XVGL/zR73ruXoyOlMafjv8qLC0VP14tznXD C2u/2nX3HuAjBQ2O1um7bnihsue5+OBoZLs7pbh6nOuGV1D2Wp7bPwJo8I2W0oU/JbuNYxzn usn5zB1kcx+S3ZUvYvPVOOTuNux+NTDs+P4iVb66F5Ovfj+Mc93kLMgH++7e6/W/DOsDYw2+ +hemm5+DOZnqeQHKOOAWWA/N6IqKHnBBZe6lEl1xtKYePsXzbld8/uZtuF/ZOUIvyxWkLxQF RLj6o3UIEEVX7yswop31fgMCjaKLEYp0B4JA01VwsylEuLtIfG3p1FxxhNFgP8LtImEJ6TTb GeD9yHYGaN41S3UNkotn8tVBmf15MIh0+0tLKO48WHj8NhpSlPvo8mWNnuvkKzXKtfPVK4ue e7YFqjCHac6D590NvHTrB+fajYFTu/B7yZk0wapdYXnG9ddWabtLSth1zgPimLoLlpQPEYZ3 p4/ycv8CJVe/Aln6VQOtHAH4dfiLtyTarozWEfoWwEWtuJulnRXLdv9gu7r9OqE6187xx+jP cm/xGAD80I2vbYoj+i4+RnZ8F50bEN+4/VmoJm8A3e9X3qWFBCvJk+JQ98cR2W0HXvqJmcJN NT/y04bXryLc0ZvAS3/5eph2Pqhsx9a5+a4xdZvhfDUKVq7svI12VRnPzn+VFzVNT3b3Bb9f KeHj/d8k8Br1XbS71ddn5/tKbznO9TfPFRfkJ1LYfRcsTZIJrha8fp7Wi6Zxe94IGslPQJw7 iXZ1oM/ez5nWT97vfI6Fs+w/4/qX6HNuaPE2nevXi3r9SjeO7POcTnCn75zPFfHs/bppO0e4 9TRuKEI7aY7Xrxf1XGx8C661Rto96c3aqauevadoJ7pRlBuuPBNTuX69qOuObPdWa097cGlx fZqvAi3ofeg+nxvuz369qOcaxh2z1bqp46+h74LflOSGx69fL+r1K8lY1E7dHd89W39wFn1W c7vhfBWuF/XcFsa3oea74qgcN249xTAac+5ZQ5frBteP+rZ761YLG7en/SrQo8t1g+tlnY5m Xrt2F3S0s3EUmHI50Xb+fTrzQbwZd/6JE1Hu/PqgnTO0aX6m586th4bcwP5wOwe2rO28HVj/ DdTXLUx/dFx4Asp2W4H17hXSeVAdRueNAq4QWN8nul1Ay3UDuEm6nhwRzgsF3NVA/QbJVU3C ebD48XpLogQ3cP5Fnc6kTNepF7X2kq+vtgzDXRuec8OPHZZTu01THqWoY/yU5IY/mNNMOY6c v3Btm1gfK75UkJdIEMl9ZwX/102ZN7x6UaIrbSinc32iOwoGGL5Nd15w/8Sr5Lq+kDuJvMAc XQ+G97v0blw9obSx+ePh2s++Mx3XiHbVQICbYnpXjnX3kLb+8YbmuPvRrhh46XaCm7ZeVLpz ONS1jTg307w7bb2o+DcF6SsbP7cct1fcDcV3FFMv+nEf4YWNDTdfRX7BQn63u1KPjS+Gjhuz 5XPheG07zm2AdSe+pbux9aLiS2ccbVwxy3dz1YuW4OaqFy3u5qsXLe7mqxct7uarFy3u5qsX LezmrBct7OasFy3s5qwXLezmrBct6uatFy3q5q0XLermrRct6gbrRSt0Q/WiFbqhetEK3VC9 aIVuqF60OjdcL1qdG64Xrc4N14tW54brRatzx4zccL1oGe5OwrOvrYL1ooXcAvWiedu56POC uMtd7nKXu7TcYs/b/KG6kNJzXJNckZF7iZELFZ273L1ArsnGldkcL2CUN7h70V2v7pi7F9Wd 283KLeX7j3K0MysXMOpXF9yl8z1iBFeezL8zve9JP3PVQFGU/870vheevVsXT12/7tje2vUK Xb/OujL30PvEqF9XXpk76Ls/+HX01bnPGLnWqVtxvxpgti4ETFytxcbdMip2n3pnAVU1meSr wDtfbPdwxMYdSPNu12TjYo27pbrSfL9auE/fFSeP58aRsk+/X0GpHulSH0fG9Don5CLa8b1j 96uXM+7Ndl2hPX6XbXcj/M7yqF2/RLuda7a7PD+OhCryZG3ehZRdaD0WH830K9nuV9NvRKDk Co35+ZFyk/78SPhJhPtZBe6qPFE7M26b/vxXQGALGTOuTn++T3Kp9yuCqzM6Xo2yK07w1my/ Uk8u8n0k7nKXu9zlLne5y13ucje7OymymefPjdm2crzmvLvbpM/fU3ZbrNxd8H65l7lbibv8 nrkKo3zFyH3fzgvc5e7FcJvuJ2DfH1c2gYoZuHAIrjPpV/fBiInbFC0mrvxPzMSFJ4zyRoeR m2cT/w8c7yMkuKAnJwAAAABJRU5ErkJggg== ------=_NextPart_000_0208_01CAC62C.259653F0--