Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-df03.r1000.mx.aol.com (Internet Inbound) with ESMTP id E8F37380000E9; Tue, 30 Oct 2012 15:32:38 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TTHI1-0003Y8-10 for rs_out_1@blacksheep.org; Tue, 30 Oct 2012 19:15:53 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TTHI0-0003Xx-JJ for rsgb_lf_group@blacksheep.org; Tue, 30 Oct 2012 19:15:52 +0000 Received: from ppa05.princeton.edu ([128.112.129.74]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1TTHHy-0002a0-Fl for rsgb_lf_group@blacksheep.org; Tue, 30 Oct 2012 19:15:51 +0000 Received: from csgsmtp200l.Princeton.EDU (csgsmtp200l.Princeton.EDU [128.112.130.131]) by ppa05.princeton.edu (8.14.4/8.14.4) with ESMTP id q9UJFmpe018962 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Tue, 30 Oct 2012 15:15:48 -0400 Received: from [128.112.84.206] (phy-joe.Princeton.EDU [128.112.84.206]) (authenticated bits=0) by csgsmtp200l.Princeton.EDU (8.13.8/8.12.9) with ESMTP id q9UJFmnN017738 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Tue, 30 Oct 2012 15:15:48 -0400 Message-ID: <50902764.7010508@princeton.edu> Date: Tue, 30 Oct 2012 15:15:48 -0400 From: Joe Taylor User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:8.0) Gecko/20111105 Thunderbird/8.0 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <8D468B5D9DCA4B6D90ED557E68BB66AF@White> <508F157E.9040108@iup.uni-heidelberg.de> <508FAB27.2050909@psk31.plus.com> <508FD677.2050807@iup.uni-heidelberg.de> <50900CFA.20906@psk31.plus.com> <50901F44.1030708@iup.uni-heidelberg.de> In-Reply-To: <50901F44.1030708@iup.uni-heidelberg.de> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.7.7855,1.0.431,0.0.0000 definitions=2012-10-30_06:2012-10-30,2012-10-30,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=quarantine_notspam policy=quarantine score=0 spamscore=0 ipscore=0 suspectscore=1 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=6.0.2-1203120001 definitions=main-1210300213 X-MIME-Autoconverted: from 8bit to quoted-printable by ppa05.princeton.edu id q9UJFmpe018962 X-Spam-Score: -3.0 (---) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: On 10/30/2012 2:41 PM, Stefan Schäfer wrote: > Like yesterday i'm running my receiver down in the office on the Win7 > PC. However there are no decodes so far after 4 rounds. In the next > round i want to shorten the antenna wire so the signal is some 20 dB > lower. Maybe it has actually something to do with to strong signal levels. [...] Content analysis details: (-3.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [128.112.129.74 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: b77892ad90d0261eaf071f4f6cf31464 Subject: Re: LF: JT9-1 and 2, echoes, waterfall Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable 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-sid: 3039ac1d40d750902b5362d0 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : temperror On 10/30/2012 2:41 PM, Stefan Sch=E4fer wrote: > Like yesterday i'm running my receiver down in the office on the Win7 > PC. However there are no decodes so far after 4 rounds. In the next > round i want to shorten the antenna wire so the signal is some 20 dB > lower. Maybe it has actually something to do with to strong signal leve= ls. Possibly. The decoder is for weak signals, remember. > Am 30.10.2012 18:23, schrieb g3zjo: >> [...] >> >> Non de-code checks done here today on JT9-2, it looks to me that your >> TX / RX need to be stable over the 2min period to less than +- 0.78Hz, >> pretty critical for rigs. > Maybe this is an issue, yes. The stability of my signal is that of the > soundcard, which should be much better than 0.78 Hz in 30 minutes. > However the receivers end must be taken in account as well, of course. > If people are using a HF TRX, the overall drift may become critical. > Maybe Joe can comment on that. > > I'm going to transmit a last JT9-30 round for today, starting 19...19:3= 0 > UTC, 137.44 kHz. I suggest that you use JT9-1 or JT9-2 until you have sorted out your=20 various problems. -- Joe