Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-db02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 1E9E13800009B; Sun, 24 Jun 2012 12:13:25 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SipQ5-0006zZ-8z for rs_out_1@blacksheep.org; Sun, 24 Jun 2012 17:12:13 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SipQ4-0006zQ-RX for rsgb_lf_group@blacksheep.org; Sun, 24 Jun 2012 17:12:12 +0100 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1SipQ3-0002X5-4l for rsgb_lf_group@blacksheep.org; Sun, 24 Jun 2012 17:12:11 +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 q5OGCAka011618 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 24 Jun 2012 18:12:10 +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 q5OGC9g2013257 for ; Sun, 24 Jun 2012 18:12:09 +0200 Message-ID: <4FE73BEC.4060107@iup.uni-heidelberg.de> Date: Sun, 24 Jun 2012 18:10:20 +0200 From: =?ISO-8859-1?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 References: <2EA53566F2544F218747891F118768B1@AGB> <4FE7348B.3080601@kpnmail.nl> In-Reply-To: <4FE7348B.3080601@kpnmail.nl> X-Spam-Score: -2.3 (--) 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: Hi Jan, Thanks for the info. Yes, he seems to have a 500 kHz LO (?) due to the black gap at 500 kHz which seems to come from his lower cutoff frequency of the converter. If a 2 MHz ( /4) xtal is used, maybe a 1.8432 MHz xtal may be the alternative... [...] Content analysis details: (-2.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [129.206.210.211 listed in list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: 64437c466041e93ffedda7fb96b22b71 Subject: Re: LF: Opera Monitoring 500 off air & 477 via Delft Content-Type: text/plain; charset=ISO-8859-1; 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: 0:2:398695328:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40564fe73ca53b66 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hi Jan, Thanks for the info. Yes, he seems to have a 500 kHz LO (?) due to the black gap at 500 kHz which seems to come from his lower cutoff frequency of the converter. If a 2 MHz ( /4) xtal is used, maybe a 1.8432 MHz xtal may be the alternative... 73, CU, Stefan Am 24.06.2012 17:38, schrieb pa3abk: > Received an email from Wouter PA3WEG. > > The WebSDR is x-tal driven, but he will look at it to get the unit > somewhat lower. > He intends to widen the bandpass filter in such it will catch the > lower end more effectively. > > In future the SDR will receive new hardware for VHF/UHF or 4 & 6m > Also 137kHz will receive some attention. > > His main problem is time.... > At the moment he is very busy with the FUNcube satelliet project. > (funcube.org.uk) > > Jan/pa3abk > > > NNNN > On 16-6-2012 18:02, Graham wrote: >> Something just noticed , 477 is inside the Delft-web-sdr range .... ! >> Monitoring 500K off air and 477 via Delft >> can run x2 sdr and monitor 500/477 , but with x 2 noise >> .should work ? >> G.. >> http://websdr.pa3weg.nl/ > >