Return-Path: X-Spam-DCC: paranoid 1181; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-1.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, NO_REAL_NAME,SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u25Jx7do023599 for ; Sat, 5 Mar 2016 20:59:07 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1acIEU-0000d7-8d for rs_out_1@blacksheep.org; Sat, 05 Mar 2016 19:51:22 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1acIET-0000cy-RO for rsgb_lf_group@blacksheep.org; Sat, 05 Mar 2016 19:51:21 +0000 Received: from nina.ucs.mun.ca ([134.153.232.76]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.86) (envelope-from ) id 1acIER-00085G-4d for rsgb_lf_group@blacksheep.org; Sat, 05 Mar 2016 19:51:20 +0000 Received: from plato.ucs.mun.ca (plato.ucs.mun.ca [134.153.232.153]) by nina.ucs.mun.ca (8.13.1/8.13.1) with ESMTP id u25JpGFY013488 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sat, 5 Mar 2016 16:21:17 -0330 Date: Sat, 5 Mar 2016 16:21:16 -0330 (NST) From: jcraig@mun.ca X-X-Sender: jcraig@plato.ucs.mun.ca To: rsgb_lf_group@blacksheep.org In-Reply-To: <153484aa06b-3a1c-e214@webprd-m22.mail.aol.com> Message-ID: References: <153484aa06b-3a1c-e214@webprd-m22.mail.aol.com> MIME-Version: 1.0 X-Scan-Signature: d7907c3bf895ca41e0bedc3fa074f0d4 Subject: Re: LF: VO1NA CW 477.7 kHz Content-Type: MULTIPART/MIXED; BOUNDARY="-1719232024-983080127-1457207476=:15265" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 7213 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. ---1719232024-983080127-1457207476=:15265 Content-Type: TEXT/PLAIN; charset=X-UNKNOWN; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Hi Markus, That's remarkable! I'm inspired. Tnx 73 Joe VO1NA On Sat, 5 Mar 2016, Markus Vester wrote: > > > Hi Joe, > > on the spectrogram https://dl.dropboxusercontent.com/u/26404526/opds8.png= , your carrier trace was quite narrow so conditions were stable again last= night. Weak sidelines at +- 4.16 Hz corresponding to the dot rate were als= o visible. > > Unlike Roelof, I have no chance of actually hearing your CW message here.= So I made an attempt to bring it out of the noise using coherent averaging= =2E The saved data files from 23 to 6 UT were assembled into one large arra= y. Then the phase evolution of the AM carrier was estimated and used for sy= nchroneous demodulation (just like in opds). Thus the modulation appears in= the in-phase baseband component, allowing coherent averaging of multiple m= essage repeats. > > From the sidelines I knew the dot duration, but I had to use trial and er= ror to find the message length. In the end, a cycle of 208 dotlengths (25.0= 0228 s) and 1126 averages turned up an easily readable fast-CW decode, show= n in the attached screenshot (black =3D in-phase, cyan =3D quadrature). > > All the best, > Markus (DF6NM) > > > > -----Urspr=C3=BCngliche Mitteilung----- > Von: jcraig > An: rsgb_lf_group > Verschickt: Fr, 4 Mrz 2016 11:49 pm > Betreff: Re: LF: MF: EbNaut: Now CW 477.7 kHz > > > Thank-you again Roelof. Conditions are great so I'll try 10 WPM CW > tonight. > 73 Joe VO1NA > > On Fri, 4 Mar 2016, Roelof Bakker wrote: > >> Hello Joe, >> >> Excellent propagation once more! >> Even better than yesterday night. >> >> 73, >> Roelof, pa0rdt >> ---1719232024-983080127-1457207476=:15265--