Return-Path: X-Spam-DCC: paranoid 1002; 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=-0.5 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_50_60,HTML_MESSAGE,RATWARE_GECKO_BUILD 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 t9HKoW2R022132 for ; Sat, 17 Oct 2015 22:50:32 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZnYOW-0004Y3-SD for rs_out_1@blacksheep.org; Sat, 17 Oct 2015 21:48:00 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZnYOW-0004Xu-IN for rsgb_lf_group@blacksheep.org; Sat, 17 Oct 2015 21:48:00 +0100 Received: from mout01.posteo.de ([185.67.36.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.86) (envelope-from ) id 1ZnYNU-0002Vw-6w for rsgb_lf_group@blacksheep.org; Sat, 17 Oct 2015 21:47:59 +0100 Received: from dovecot03.posteo.de (dovecot03.posteo.de [172.16.0.13]) by mout01.posteo.de (Postfix) with ESMTPS id D728A20B7D for ; Sat, 17 Oct 2015 22:46:39 +0200 (CEST) Received: from mail.posteo.de (localhost [127.0.0.1]) by dovecot03.posteo.de (Postfix) with ESMTPSA id 3ndbxC53Gmz5vN8 for ; Sat, 17 Oct 2015 22:46:39 +0200 (CEST) Message-ID: <5622B3AE.9030102@posteo.de> Date: Sat, 17 Oct 2015 22:46:38 +0200 From: DK7FC 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: <1981852865.20151017122027@chriswilson.tv> <56228A1F.70401@tiscali.co.uk> <562293AF.50302@mollies.freeserve.co.uk> <996C21CA85D54CCA8FAACBD2C33B4F72@White> <5622AB5C.7040505@mollies.freeserve.co.uk> In-Reply-To: <5622AB5C.7040505@mollies.freeserve.co.uk> X-Scan-Signature: da9a90c67b7e22f6718c156d8d99c1a4 Subject: Re: LF: WSPR-X Content-Type: multipart/alternative; boundary="------------000702060102040003070203" 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 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 4455 This is a multi-part message in MIME format. --------------000702060102040003070203 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi Martin, Or maybe you're using a USB soundcard sampling at 48kS/s and your PC is set to 44.1kS/s, giving a certain frequency offset? 73, Stefan Am 17.10.2015 22:11, schrieb Martin Evans: > Ah - thanks Marcus. > > This gives me somewhere to start looking! > > Martin GW3UCJ. > > ################ >> Hi Martin, >> version r3058 is working fine here. The issue could perhaps be >> related to samplerate deviation. WSPR v2.11 sets up the soundcard >> at 48000 samples/second whereas WSPR-X is asking for 12000 s/s. >> Usually the ratio between the delivered samplerates is an accurate >> factor of four, but it depends on the soundcard driver. More than >> half a percent error will upset the symbol timing enough to render >> decoding impossible. You could check it by injecting a known audio >> tone and looking at the frequency in the wspr-x spectrogram. >> Best 73, >> Markus (DF6NM) >> >> *From:* Martin Evans >> *Sent:* Saturday, October 17, 2015 8:30 PM >> *To:* rsgb_lf_group@blacksheep.org >> *Subject:* LF: WSPR-X >> >> >> I've tried and tried to get WSPR-X V0.8 r3058 to decode - I'm trying >> now, on 474.2kHz. >> >> Good strong signals on the waterfall, computer time synched using >> Dimension 4, but absolutely no joy at decoding. >> >> Is there a secret to this - the older WSPR 2.0 works fine. >> >> Or is there a later version that actually works? >> >> Martin GW3UCJ Swansea. >> >> >> > --------------000702060102040003070203 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi Martin,

Or maybe you're using a USB soundcard sampling at 48kS/s and your PC is set to 44.1kS/s, giving a certain frequency offset?

73, Stefan

Am 17.10.2015 22:11, schrieb Martin Evans:
Ah - thanks Marcus.

This gives me somewhere to start looking!

Martin  GW3UCJ.

################
Hi Martin, 
 
version r3058 is working fine here. The issue could perhaps be related to samplerate deviation. WSPR v2.11 sets up the soundcard at 48000 samples/second whereas WSPR-X is asking for 12000 s/s. Usually the ratio between the delivered samplerates is an accurate factor of four, but it depends on the soundcard driver. More than half a percent error will upset the symbol timing enough to render decoding impossible. You could check it by injecting a known audio tone and looking at the frequency in the wspr-x spectrogram.
 
Best 73,
Markus (DF6NM)
 
 

Sent: Saturday, October 17, 2015 8:30 PM
Subject: LF: WSPR-X


I've tried and tried to get WSPR-X V0.8 r3058  to decode - I'm trying
now, on 474.2kHz.

Good strong signals on the waterfall, computer time synched using
Dimension 4, but absolutely no joy at decoding.

Is there a secret to this - the older WSPR 2.0 works fine.

Or is there a later version that actually works?

Martin  GW3UCJ  Swansea.




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