Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mb04.r1000.mx.aol.com (Internet Inbound) with ESMTP id A21D5380000C3; Mon, 24 Jun 2013 13:41:32 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1UrAkF-0008RW-VP for rs_out_1@blacksheep.org; Mon, 24 Jun 2013 18:40:03 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1UrAkF-0008RN-Bv for rsgb_lf_group@blacksheep.org; Mon, 24 Jun 2013 18:40:03 +0100 Received: from mout.gmx.net ([212.227.17.22]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1UrAkC-0001Zh-Df for rsgb_lf_group@blacksheep.org; Mon, 24 Jun 2013 18:40:02 +0100 Received: from mailout-de.gmx.net ([10.1.76.33]) by mrigmx.server.lan (mrigmx002) with ESMTP (Nemesis) id 0LxIeK-1UBv1B1tfu-0170Lw for =?utf-8?q?;?= Mon, 24 Jun 2013 19:39:59 +0200 Received: (qmail invoked by alias); 24 Jun 2013 17:39:53 -0000 Received: from unknown (EHLO DF2JPmob) [212.23.103.126] by mail.gmx.net (mp033) with SMTP; 24 Jun 2013 19:39:53 +0200 X-Authenticated: #23013863 X-Provags-ID: V01U2FsdGVkX19LzuxOHOJL4hxOkh+cPeNdKSwhL6bQVm49LxjEgq xrBv0kDq9L+0hA From: "Joe" To: References: In-Reply-To: Date: Mon, 24 Jun 2013 19:39:50 +0200 Message-ID: <000801ce7101$d673eab0$835bc010$@gmx.de> MIME-Version: 1.0 X-Mailer: Microsoft Outlook 15.0 Thread-Index: AQIiHcym24AYcbbxuMB+vQpBxj/STJidxSrw Content-Language: de X-Y-GMX-Trusted: 0 X-Spam-Score: 3.4 (+++) 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 Markus, LF The antenna is mounted abt. 2m above the ground in my backyard abt. 20m away from any electrical installations. The last nights it were pointing NW - SE (USA <---> Greece) [...] Content analysis details: (3.4 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [212.227.17.22 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (df2jp[at]gmx.de) 0.6 RCVD_IN_SORBS_WEB RBL: SORBS: sender is an abusable web server [212.23.103.126 listed in dnsbl.sorbs.net] -0.0 SPF_PASS SPF: sender matches SPF record 1.8 URIBL_BLACK Contains an URL listed in the URIBL blacklist [URIs: bplaced.net] 0.0 HTML_MESSAGE BODY: HTML included in message 1.0 FREEMAIL_REPLY From and body contain different freemails X-Scan-Signature: f4625b23d277cf453c74a2300a95877d Subject: AW: LF: VO1NA Opera-32 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01CE7112.9A0175A0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.2 required=5.0 tests=HTML_50_60,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-sid: 3039ac1d601851c884ca1c36 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : temperror This is a multipart message in MIME format. ------=_NextPart_000_0009_01CE7112.9A0175A0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Hi Markus, LF The antenna is mounted abt. 2m above the ground in my backyard abt. 20m away from any electrical installations. The last nights it were pointing NW - SE (USA <---> Greece) 73 Joe Von: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] Im Auftrag von Markus Vester Gesendet: Montag, 24. Juni 2013 10:54 An: rsgb_lf_group@blacksheep.org Betreff: Re: LF: VO1NA Opera-32 sorry, wrong link corrected. 73, Markus From: Markus Vester Sent: Monday, June 24, 2013 10:49 AM To: rsgb_lf_group@blacksheep.org Subject: Re: LF: VO1NA Opera-32 Last night the EA5HVK Opera decoder and my opds correlation detector ran side by side here on one machine, fed by the same soundcard. Opera got the full passband (136-138.2 kHz) through SpecLab and VAC without further audio processing, whereas the other SpecLab instance for opds had a 160 Hz bandpass filter, noise blanker and audio AGC inserted before the 0.477 mHz FFT. The QRN background from the southeast was generally lower than the night before. Results for both are in df6nm.bplaced.net/opera/Opera_vs_opds_130623-24.txt and a screenshot df6nm.bplaced.net/opera/Opera_vs_opds_screenshot_130624.jpg Although SNR results shown by Opera were consistently better than those for opds, Opera achieved two only decodes while opds produced ten hits (including three from VO1NA). I am wondering whether this difference may have been exacerbated by the regular splatter from DCF39 which is quite strong in central Europe. This may also have affected the SNR estimates of either program. Maybe in this situation dedicated preprocessing might be helpful for Opera as well? We may perhaps speculate that possible DCF suppression may be part of the loop advantage observed by DF2JP - Joe could you comment on your loop's orientation? Best 73, Markus (DF6NM) From: Markus Vester Sent: Sunday, June 23, 2013 1:25 PM To: rsgb_lf_group@blacksheep.org ; rsgb_lf_group@yahoogroups.co.uk Subject: Re: LF: VO1NA Opera-32 I have downloaded Opera v1.4.7 from the rosmodem website. It was easy to configure and is running smoothly in conjunction with SpecLab and VAC-3, which is needed here to convert from 135.5 to 136.0 kHz LO. With the waterfall disabled, average CPU usage on the slow Atom Netbook is an easy 20% from one of two virtual CPU's (10% shown in task manager). Opds is running in parallel from a separate SpecLab instance. A locally generated test signal showed up both in Opera (-28 dB) and in opds (-36.4 dB), which means that the first round goes to Jose ;-) I will let both run for a while, hoping for some weak signals to compare. Best 73, Markus (DF6NM) ------=_NextPart_000_0009_01CE7112.9A0175A0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Hi Markus, LF

 

The antenna is mounted abt. 2m above the = ground in my backyard abt. 20m away from any electrical = installations.

The last nights it were pointing NW = – SE (USA ß-> Greece)

 

73 Joe

 

Von:= = owner-rsgb_lf_group@blacksheep.org = [mailto:owner-rsgb_lf_group@blacksheep.org] Im Auftrag von Markus = Vester
Gesendet: Montag, 24. Juni 2013 10:54
An: = rsgb_lf_group@blacksheep.org
Betreff: Re: LF: VO1NA = Opera-32

 

sorry, wrong = link corrected. 73, Markus

 <= /o:p>

From:= = Markus Vester =

Sent:= = Monday, June 24, 2013 10:49 AM

Subject: Re: LF: = VO1NA Opera-32

 

Last night = the EA5HVK Opera decoder and my opds correlation detector ran side by = side here on one machine, fed by the same soundcard. Opera got the full = passband (136-138.2 kHz) through SpecLab and VAC without further audio = processing, whereas the other SpecLab instance for opds had a 160 Hz = bandpass filter, noise blanker and audio AGC inserted before the 0.477 = mHz FFT. The QRN background from the southeast was generally lower than = the night before.

 

Results for = both are = in 
 df6nm.bplaced.net/opera/Opera_vs_opds_130623-24.txt

and a = screenshot
 df6nm.bplaced.net/opera/Opera_vs_opds_screenshot_1306= 24.jpg

 

Although SNR = results shown by Opera were consistently better than those for opds, = Opera achieved two only decodes while opds produced ten hits (including = three from VO1NA).

 

I am = wondering whether this difference may have been exacerbated by the = regular splatter from DCF39 which is quite strong in central Europe. = This may also have affected the SNR estimates of either program. Maybe = in this situation dedicated preprocessing might be helpful for Opera as = well?

 

We may = perhaps speculate that possible DCF suppression may be part of the loop = advantage observed by DF2JP - Joe could you comment on your loop's = orientation?

 

Best = 73,
Markus (DF6NM)


&n= bsp;

From:= = Markus Vester =

Sent:= = Sunday, June 23, 2013 1:25 PM

Subject: Re: LF: = VO1NA Opera-32

 

I have = downloaded Opera v1.4.7 from the rosmodem website. It was easy to = configure and is running smoothly in conjunction with SpecLab and VAC-3, = which is needed here to convert from 135.5 to 136.0 kHz LO. With = the waterfall disabled, average CPU usage on the slow Atom Netbook = is an easy 20% from one of two virtual CPU's (10% shown in = task manager).

 

Opds is = running in parallel from a separate SpecLab instance. A locally = generated test signal showed up both in Opera (-28 dB) and in opds = (-36.4 dB), which means that the first round goes to Jose ;-) I = will let both run for a while, hoping for some weak signals to = compare.

 

Best = 73,

Markus = (DF6NM)

 

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