Return-Path: Received: from mtain-me03.r1000.mx.aol.com (mtain-me03.r1000.mx.aol.com [172.29.96.139]) by air-mb06.mail.aol.com (v129.4) with ESMTP id MAILINMB062-a6ff4d1de50632a; Fri, 31 Dec 2010 09:13:26 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-me03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 96C0E38000088; Fri, 31 Dec 2010 09:13:24 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PYfid-0002J5-LV for rs_out_1@blacksheep.org; Fri, 31 Dec 2010 14:12:35 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PYfid-0002Iw-32 for rsgb_lf_group@blacksheep.org; Fri, 31 Dec 2010 14:12:35 +0000 Received: from mail-iy0-f171.google.com ([209.85.210.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PYfia-0006iA-Mw for rsgb_lf_group@blacksheep.org; Fri, 31 Dec 2010 14:12:35 +0000 Received: by iyj21 with SMTP id 21so10622748iyj.16 for ; Fri, 31 Dec 2010 06:12:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=cM3ZyG9HY1dLyphhILePGI2TKidgr5s2chKRlscASkk=; b=ov9K904kU+elq/wqn3M16nfvR0M4gkbu7gJK+/1pLFU1PF3Sp4FZLLZulTxBfwyDko ONVh+I7nC+FUfVX1BlEqBdLRtzc4/xcSQT4Ipmf1iiN6JqQKdC/OW9rTmEWl45ikHZty K9zcMBPle0PxBcBAu9vcCK4hQzOyZ1S1blK80= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=tVXJrR7Szh+SpGsdDcTSh01bt1SMa2ZdwFrIgqvlCZKFe8vgQziL+BcPg84nrQK0pY T/dgfIqWjabSyuyD9ZL/XXTCpm7qdBNaTAmC5Ih6Olt6lxfmE6G+2dsmP4zRKwprCUib wk8bLM+Xt1pFs7H1QhSdf0SaC9/k6s1+S0Gsk= MIME-Version: 1.0 Received: by 10.231.13.137 with SMTP id c9mr17413004iba.37.1293804746031; Fri, 31 Dec 2010 06:12:26 -0800 (PST) Received: by 10.231.200.211 with HTTP; Fri, 31 Dec 2010 06:12:25 -0800 (PST) In-Reply-To: References: <11250.89514.qm@web28501.mail.ukl.yahoo.com> <4D1DC897.2060606@iup.uni-heidelberg.de> <76636.6973.qm@web28508.mail.ukl.yahoo.com> <1567AC3A96624647ADC1F52EF1A1E625@JimPC> <732174.92691.qm@web28506.mail.ukl.yahoo.com> Date: Fri, 31 Dec 2010 14:12:25 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: VLF - G3XIZ Content-Type: multipart/alternative; boundary=0022150467ef4bc2c60498b56496 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,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-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m206.2 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d608b4d1de50422b6 X-AOL-IP: 195.171.43.25 X-Mailer: Unknown (No Version) --0022150467ef4bc2c60498b56496 Content-Type: text/plain; charset=ISO-8859-1 Well that's its limit. 8137Hz sampling, 2M FFT for a .0039Hz bin size. Will leave it running in the hope the frequencies displayed are as it says they are - not in a position to do a frequency-cal run at the moment. On 31 December 2010 14:06, Andy Talbot wrote: > Nothing here. But with 15dB S/N at Jim's in a tenth of the bandwidth I'm > looking it, and at at least twice the range, probably not surprising. > I'll try going narrower, but have never tested the SDR-IQ at these limits so > not sure how the display / calibration holds up. > > Andy > www.g4jnt.com > > > > > > On 31 December 2010 14:01, Chris Osborn wrote: > >> Dear Jim, >> >> That looks very promising. >> The balloons are still up and I'm back on QRSS 600. >> I'll keep the TX going for a few hours or until the aerial comes down. >> >> 73 Chris G3XIZ >> >> ------------------------------ >> *From:* James Moritz >> >> *To:* rsgb_lf_group@blacksheep.org >> *Sent:* Fri, 31 December, 2010 13:54:28 >> >> *Subject:* Re: LF: VLF - G3XIZ >> >> Dear Chris, LF Group, >> >> I seem to have a trace on your frequency - see attachment. SNR is >> currently around 15dB with 1.5millihertz FFT resolution. It definitely >> wasn't there before ;-) >> >> Cheers, Jim Moritz >> 73 de M0BMU >> >> > --0022150467ef4bc2c60498b56496 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Well that's its limit.=A0 8137Hz sampling, 2M FFT for a .0039Hz= bin size.=A0=A0 Will leave it running in the hope the frequencies display= ed=A0are as it says they are - not in a position to do a frequency-cal run= at the moment.
=A0
=A0
On 31 December 2010 14:06, Andy Talbot <andy.g4jnt@gmail.com= > wrote:
Nothing here.=A0=A0 But=A0with 15dB S/N at Jim's=A0in a tenth of= the bandwidth I'm looking it, and at at least twice the range, probab= ly not surprising.=A0=A0=A0 I'll try going narrower, but have never te= sted the SDR-IQ at these limits so not sure how the display / calibration= holds up.
=A0
Andy
=A0
=A0


=A0
On 31 December 2010 14:01, Chris Osborn <g3= xiz@yahoo.co.uk> wrote:
Dear Jim,

That looks very promising.
The balloons are still= up and I'm back on QRSS 600.
I'll keep the TX going for a few= hours or until the aerial comes down.

73 Chris G3XIZ
=
=
From: James Moritz <james.mori= tz@btopenworld.com>=20 Sent:= Fri, 31 December, 2010 13:54:28=20

Subject: Re: LF:= VLF - G3XIZ

Dear Chris, LF Group,

I seem to have a trace on your frequ= ency - see attachment. SNR is currently around 15dB with 1.5millihertz FFT= resolution. It definitely wasn't there before ;-)

Cheers, Jim= Moritz
73 de M0BMU


--0022150467ef4bc2c60498b56496--