Return-Path: X-Spam-DCC: paranoid 1102; 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=-1.9 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_40_50,HTML_MESSAGE 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 tBAI2usW009142 for ; Thu, 10 Dec 2015 19:02:57 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1a75UQ-00080l-Ot for rs_out_1@blacksheep.org; Thu, 10 Dec 2015 17:58:50 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1a75UQ-00080c-AD for rsgb_lf_group@blacksheep.org; Thu, 10 Dec 2015 17:58:50 +0000 Received: from mail-wm0-f43.google.com ([74.125.82.43]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.86) (envelope-from ) id 1a75TM-0002f4-8D for rsgb_lf_group@blacksheep.org; Thu, 10 Dec 2015 17:58:49 +0000 Received: by wmww144 with SMTP id w144so35423138wmw.0 for ; Thu, 10 Dec 2015 09:57:28 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=cNukznEnnXt41JPjKZLIJWOE0aRG4+6NA5xCCXz0Yjk=; b=LSijnb9aBBSvcuGLubGCeueIkRZUSu6Tmvwq2fRTRbJfsEkG+KgXlMgytSyzg6+eOv O8/ioj1iMhil1ryzMmQZWJw0DeeCbtVkDjr17suFKzRZUtmb+ZX3BdEc22gw0kjE/PtQ DwG5MHdG4H66NJytPcunwqRZ1Swti24V463+n62PgYqB8oxwmfbWgvs6s+7G+loGAk11 PfpAS7k86NwFX8CucNsg51K7QcVFzuaUe1aSYQIiKcmAQcsFf2nFIuyBzzv+XmD/pLOI gpoi5XV78DbserKKFYHlgH/JLhb5lR0n6zBdyx+HMSW2oTKvdD34p2raGgfPAvhbrJh/ 6uMw== MIME-Version: 1.0 X-Received: by 10.28.89.137 with SMTP id n131mr438603wmb.9.1449770248143; Thu, 10 Dec 2015 09:57:28 -0800 (PST) Received: by 10.28.130.139 with HTTP; Thu, 10 Dec 2015 09:57:28 -0800 (PST) In-Reply-To: <5669B7CE.1090601@freenet.de> References: <56686FA0.4050707@gmail.com> <56695B15.6010203@abelian.org> <56696950.1040300@abelian.org> <5669B7CE.1090601@freenet.de> Date: Thu, 10 Dec 2015 17:57:28 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Scan-Signature: ad8e5dd63f7497fd9d71d15044db2e2b Subject: Re: LF: LF EbNaut test from JN80 on 137370 Content-Type: multipart/alternative; boundary=001a1140cdb8a58c9d05268ef04d 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: 5727 --001a1140cdb8a58c9d05268ef04d Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable The frequency in that file goes from negative to zero to positive. So I would have thought it would show leading moving to lagging , or vice versa But yes, there seems to be no standard for I/Q wave files 'jnt On 10 December 2015 at 17:35, Wolfgang B=C3=BCscher wro= te: > Hmm... the old problem with "I leading Q" or "Q leading I" if the signal > frequency in the complex stream is positive. > > When loading Andy's file in a curve editor, I see the 2nd channel leads > the 1st by 90 degrees. > "positive or negative frequency" per definition ? > > Cheers, > Wolf . > > Am 10.12.2015 um 13:00 schrieb Paul Nicholson: > >> >> Andy wrote: >> >> > I'll check my generated .WAV files via the waterfall plot >> > in Spec Lab to make sure the I/Q is the right way >> > round. >> >> Yes, here I will check vlfrx-tools, I think it's the right >> polarity but maybe not? I notice when I rx I/Q from an >> RTL2832 SDR I have to invert Q to get the sidebands the >> right way round which is suspicious. >> >> -- >> Paul Nicholson >> -- >> >> > > --001a1140cdb8a58c9d05268ef04d Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
The frequency in that file goes from negative to zero to p= ositive.=C2=A0 So I would have thought it would show leading moving to lagg= ing , or vice versa

But yes, there seems to be no standa= rd for I/Q wave files

'jnt



On 10 D= ecember 2015 at 17:35, Wolfgang B=C3=BCscher <dl4yhf@freenet.de> wrote:
Hmm... the old problem with = "I leading Q" or "Q leading I" if the signal frequency = in the complex stream is positive.

When loading Andy's file in a curve editor, I see the 2nd channel leads= the 1st by 90 degrees.
"positive or negative frequency" per definition ?

Cheers,
=C2=A0 Wolf .

Am 10.12.2015 um 13:00 schrieb Paul Nicholson:

Andy wrote:

> I'll check my generated .WAV files via the waterfall plot
> in Spec Lab to make sure the I/Q is the right way
> round.

Yes, here I will check vlfrx-tools, I think it's the right
polarity but maybe not?=C2=A0 =C2=A0I notice when I rx I/Q from an
RTL2832 SDR I have to invert Q to get the sidebands the
right way round which is suspicious.

--
Paul Nicholson
--




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