Return-Path: Received: from mtain-me06.r1000.mx.aol.com (mtain-me06.r1000.mx.aol.com [172.29.96.142]) by air-di02.mail.aol.com (v126.13) with ESMTP id MAILINDI021-eaba4b6123a01a5; Thu, 28 Jan 2010 00:41:52 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-me06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 8982B38000159; Thu, 28 Jan 2010 00:41:50 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NaN7f-00010F-KP for rs_out_1@blacksheep.org; Thu, 28 Jan 2010 05:40:55 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NaN7e-000106-Vr for rsgb_lf_group@blacksheep.org; Thu, 28 Jan 2010 05:40:54 +0000 Received: from smtp02.online.nl ([194.134.41.32]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NaN7c-0002e4-Gf for rsgb_lf_group@blacksheep.org; Thu, 28 Jan 2010 05:40:54 +0000 Received: from smtp02.online.nl (localhost [127.0.0.1]) by smtp02.online.nl (Postfix) with ESMTP id AD822A03F for ; Thu, 28 Jan 2010 06:40:46 +0100 (CET) Received: from pa3fnytrqxpddu (s5593e077.adsl.wanadoo.nl [85.147.224.119]) by smtp02.online.nl (Postfix) with SMTP for ; Thu, 28 Jan 2010 06:40:46 +0100 (CET) From: To: Date: Thu, 28 Jan 2010 06:40:46 +0100 Message-ID: MIME-Version: 1.0 X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 In-Reply-To: Importance: Normal X-Online-Scanned: by Cloudmark authority (on smtp02.online.nl) X-Spam-Score: 1.0 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,HTML_TAG_EXIST_TBODY=0.126,MAILTO_TO_SPAM_ADDR=0.276,NO_REAL_NAME=0.55 Subject: LF: RE: RE: RE: WSPR Reports Content-Type: multipart/alternative; boundary="----=_NextPart_000_004A_01CA9FE4.D277D8F0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: ** X-Spam-Status: No, hits=2.9 required=5.0 tests=FROM_ENDS_IN_NUMS,HTML_40_50, HTML_FONTCOLOR_BLUE,HTML_MESSAGE,HTML_TAG_EXISTS_TBODY, MAILTO_TO_SPAM_ADDR,NO_REAL_NAME 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: 3039ac1d608e4b61239e40d9 X-AOL-IP: 193.82.116.20 ------=_NextPart_000_004A_01CA9FE4.D277D8F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Hello all, probablly the software measures S/N in the 200Hz bandwith you can see and calculates this number to a 2500HZ bandwith.K1JT cuuld tell us more.I don't see any improvement going down from 2500Hz to 250Hz unless their are strong signals in the 2500Hz filter wich can be rejected by the 250Hz filter.I don't see a reason to go below 200Hz because I want to see all possible stations,this just improves S/N number but you won't decode weaker signals than with a broader filter . 73 Victor -----Oorspronkelijk bericht----- Van: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org]Namens victor13@online.nl Verzonden: woensdag 27 januari 2010 22:00 Aan: rsgb_lf_group@blacksheep.org Onderwerp: LF: RE: RE: WSPR Reports Hello Rik,Andy, normally I use a 250 Hz USB filter for wspr,I get decodes down to -32 dB although rare... 73 Victor -----Oorspronkelijk bericht----- Van: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org]Namens Rik Strobbe Verzonden: woensdag 27 januari 2010 21:33 Aan: rsgb_lf_group@blacksheep.org Onderwerp: LF: RE: WSPR Reports Andy, maybe the "magic" lies in a narrow filter (either IF or audio). If I switch from a 2.5kHz (SSB) filter to a 270 Hz filter I also get a significant increase in SNR values reported by WSPR. Unfortunaely it hardly affects the decoding level (minimal SNR needed to get a positive decode), that rises by almost the same amount. 73, Rik ON7YD - OR7T ---------------------------------------------------------------------------- Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Andy Talbot [andy.g4jnt@googlemail.com] Verzonden: woensdag 27 januari 2010 21:26 Aan: rsgb_lf_group@blacksheep.org Onderwerp: LF: WSPR Reports Has F6CNI managed some sort of magic noise reduction system, or is it a just a case of being in a very quiet location... These are pretty impressive S/N values 2010-01-27 20:14 G4JNT 0.503875 +13 0 IO90iv +23 0.200 F6CNI JN19qb 391 243 2010-01-27 20:08 G4JNT 0.503875 +10 0 IO90iv +23 0.200 F6CNI JN19qb 391 243 2010-01-27 20:02 PA0A 0.503900 +15 0 JO33de +37 5.012 F6CNI JN19qb 502 312 2010-01-27 20:00 G4JNT 0.503875 +14 0 IO90iv +23 0.200 F6CNI JN19qb 391 243 2010-01-27 19:54 G7NKS 0.503920 -5 0 IO92ub +20 0.100 F6CNI JN19qb 422 262 2010-01-27 19:54 G4JNT 0.503875 +14 0 IO90iv +23 0.200 F6CNI JN19qb 391 243 2010-01-27 19:44 G4JNT 0.503875 +10 0 IO90iv +23 0.200 F6CNI JN19qb 391 243 2010-01-27 19:40 PA0A 0.503900 +15 0 JO33de +37 5.012 F6CNI JN19qb 502 312 Andy www.g4jnt.com ------=_NextPart_000_004A_01CA9FE4.D277D8F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hello=20 all,
 
probablly the software measures S/N in the 200Hz bandwit= h you can see and=20 calculates this number to a 2500HZ bandwith.K1JT cuuld tell us more.I= don't see=20 any improvement going down from 2500Hz to 250Hz unless their are stron= g signals=20 in the 2500Hz filter wich can be rejected by the 250Hz filter.I don't= see a=20 reason to go below 200Hz because I want to see all possible stations,t= his just=20 improves S/N number  but you won't decode weaker signals than wit= h a=20 broader filter .
73
 
Victor
-----Oorspronkelijk bericht-----
Van:= =20 owner-rsgb_lf_group@blacksheep.org=20 [mailto:owner-rsgb_lf_group@blacksheep.org]Namens=20 victor13@online.nl
Verzonden: woensdag 27 januari 2010= =20 22:00
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: LF: RE:=20 RE: WSPR Reports

Hello Rik,Andy,
 
normally I use a 250 Hz USB filter for wspr,I get de= codes down to -32=20 dB although rare...
 
73
 
Victor
-----Oorspronkelijk bericht-----
Van:<= /B>=20 owner-rsgb_lf_group@blacksheep.org=20 [mailto:owner-rsgb_lf_group@blacksheep.org]Namens Rik=20 Strobbe
Verzonden: woensdag 27 januari 2010 21:33
= Aan:=20 rsgb_lf_group@blacksheep.org
Onderwerp: LF: RE: WSPR=20 Reports

Andy,<= /FONT>
 
maybe the "magic"= lies in a=20 narrow filter (either IF or audio).
If I switch from a 2.5= kHz (SSB) filter=20 to a 270 Hz filter I also get a significant increase in SNR= values=20 reported by WSPR.
Unfortunaely it hardly= affects the=20 decoding level (minimal SNR needed to get a positive decode), that= rises by=20 almost the same amount.
 
73, Rik  ON7YD -= =20 OR7T
Van: owner-rsgb_lf_group@black= sheep.org=20 [owner-rsgb_lf_group@blacksheep.org] namens Andy Talbot=20 [andy.g4jnt@googlemail.com]
Verzonden: woensdag 27 janua= ri 2010=20 21:26
Aan: rsgb_lf_group@blacksheep.org
Onderwerp:= LF:=20 WSPR Reports

Has F6CNI managed some sort of magic noise reduction system,= or is it a=20 just a case of being in a very quiet location...
These are pretty impressive S/N values
 
 
 2010-01-27 20:14   G4JNT   0.503875   +13   0   IO90iv   +23   0.200   F6CNI   JN19qb   391   243 
 2010-01-27 20:08   G4JNT   0.503875   +10   0   IO90iv   +23   0.200   F6CNI   JN19qb   391   243 
 2010-01-27 20:02   PA0A   0.503900   +15   0   JO33de   +37   5.012   F6CNI   JN19qb   502   312 
 2010-01-27 20:00   G4JNT   0.503875   +14   0   IO90iv   +23   0.200   F6CNI   JN19qb   391   243 
 2010-01-27 19:54   G7NKS   0.503920   -5   0   IO92ub   +20   0.100   F6CNI   JN19qb   422   262 
 2010-01-27 19:54   G4JNT   0.503875   +14   0   IO90iv   +23   0.200   F6CNI   JN19qb   391   243 
 2010-01-27 19:44   G4JNT   0.503875   +10   0   IO90iv   +23   0.200   F6CNI   JN19qb   391   243 
 2010-01-27 19:40   PA0A   0.503900   +15   0   JO33de   +37   5.012   F6CNI   JN19qb   502   312 
 
=
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