Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mh05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 2F039380000BA; Tue, 13 Sep 2011 11:05:44 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1R3UWi-0000kA-RR for rs_out_1@blacksheep.org; Tue, 13 Sep 2011 16:03:56 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1R3UWi-0000k1-Fw for rsgb_lf_group@blacksheep.org; Tue, 13 Sep 2011 16:03:56 +0100 Received: from relay.uni-heidelberg.de ([129.206.100.212]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1R3UWh-0004tA-2w for rsgb_lf_group@blacksheep.org; Tue, 13 Sep 2011 16:03:56 +0100 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id p8DF3mZX021760 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 13 Sep 2011 17:03:51 +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 p8DF3mxc014291 for ; Tue, 13 Sep 2011 17:03:48 +0200 Message-ID: <4E6F70C2.8090206@iup.uni-heidelberg.de> Date: Tue, 13 Sep 2011 17:03:30 +0200 From: =?ISO-8859-15?Q?Stefan_Sch=E4fer?= 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 X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: LF: low noise and OE5ODL Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none 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: 0:2:420904320:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d60d94e6f71476577 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none LF/VLF, Very low noise today on LF and VLF. Ossi/OE5ODL is QRV again, today on 8970.05 Hz, with the characteristic drift. A good ID :-) Just found some time to build a LF preamp for the ferrite antenna. Maybe someone has fun and time to make some acty on 137.7 in a hour or so? Would like to compare signal levels and S/N of both, the 50 Ohm preamp and the high-Z preamp in a quiet location. Screenshots will be posted here... Best 73, Stefan/DK7FC PS: Will run a QRSS-3 beacon on 137.730 kHz, using 0 V PA supply voltage (i.e. no supply). There is a weak signal anyway, just because the FETs gets switched! This signal is visible at DF6NM in the QRSS-60 window in 174 km distance! ;-)