Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da05.r1000.mx.aol.com (Internet Inbound) with ESMTP id CB81A380000AB; Fri, 12 Aug 2011 14:06:32 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Qrw79-0006CC-Il for rs_out_1@blacksheep.org; Fri, 12 Aug 2011 19:05:47 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Qrw78-0006By-SE for rsgb_lf_group@blacksheep.org; Fri, 12 Aug 2011 19:05:46 +0100 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Qrw77-0006hE-Aw for rsgb_lf_group@blacksheep.org; Fri, 12 Aug 2011 19:05:46 +0100 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id p7CI5ibW018066 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 12 Aug 2011 20:05:44 +0200 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id p7CI5iAY005594 for ; Fri, 12 Aug 2011 20:05:44 +0200 Message-ID: <4E456AB7.6090403@iup.uni-heidelberg.de> Date: Fri, 12 Aug 2011 20:02:31 +0200 From: =?UTF-8?B?U3RlZmFuIFNjaMOkZmVy?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4E4527EF.2000304@iup.uni-heidelberg.de> <52970A62D1224CAF9A966D1743DCBF00@PcMinto> In-Reply-To: <52970A62D1224CAF9A966D1743DCBF00@PcMinto> X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: PA3BCA Content-Type: multipart/alternative; boundary="------------060801080101070704090805" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE 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-SCOLL-SCORE: 0:2:423102912:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d404d4e456ba83851 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------060801080101070704090805 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay2.uni-heidelberg.de id p7CI5ibW018066 Hi Minto, Am 12.08.2011 19:42, schrieb Minto Witteveen: > > How much power were you generating? > > 73=E2=80=99s, Minto pa3bca > It changes all the time. Not even sure since i just have an E field=20 probe to decouple some power from my TX antenna and feed it to a 50 uA=20 amperemeter, shunted by a potentiometer. This poti was adjusted to show=20 100% full scale when using 120 W RF before some weeks. Now reduced the=20 parallel R on the poti so it shows just 25 uA then. Got 50 uA anyway by=20 QRO and more (not sure). So it should be arround 500W. This is -6 dBfs :-= ) But the antenna, i.e. the coil and its cover is very lossy it seems.=20 When there was rain, i have up to twice the losses :-( Need to search=20 for an alternative cover (mustn't burn, so a water barrel is no=20 alternative...). 73, Stefan/DK7FC --------------060801080101070704090805 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay2.uni-heidelberg.de id p7CI5ibW018066 Hi Minto,

Am 12.08.2011 19:42, schrieb Minto Witteveen:

How much power were you generating?
73=E2=80=99s, Minto pa3bca

=C2=A0

It changes all the time. Not even sure since i just have an E field probe to decouple some power from my TX antenna and feed it to a 50 uA amperemeter, shunted by a potentiometer. This poti was adjusted to show 100% full scale when using 120 W RF before some weeks. Now reduced the parallel R on the poti so it shows just 25 uA then. Got 50 uA anyway by QRO and more (not sure). So it should be arround 500W. This is -6 dBfs :-)

But the antenna, i.e. the coil and its cover is very lossy it seems. When there was rain, i have up to twice the losses :-( Need to search for an alternative cover (mustn't burn, so a water barrel is no alternative...).

73, Stefan/DK7FC
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