Return-Path: Received: from mtain-dd05.r1000.mx.aol.com (mtain-dd05.r1000.mx.aol.com [172.29.64.145]) by air-de06.mail.aol.com (v129.4) with ESMTP id MAILINDE061-5eb64d1df880326; Fri, 31 Dec 2010 10:36:32 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dd05.r1000.mx.aol.com (Internet Inbound) with ESMTP id F07C7380000B2; Fri, 31 Dec 2010 10:36:30 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PYh0a-0003FR-GA for rs_out_1@blacksheep.org; Fri, 31 Dec 2010 15:35:12 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PYh0a-0003FI-0F for rsgb_lf_group@blacksheep.org; Fri, 31 Dec 2010 15:35:12 +0000 Received: from mail-iw0-f171.google.com ([209.85.214.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PYh0X-0007Ch-Cj for rsgb_lf_group@blacksheep.org; Fri, 31 Dec 2010 15:35:11 +0000 Received: by iwn2 with SMTP id 2so11833758iwn.16 for ; Fri, 31 Dec 2010 07:35:08 -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=DKfXeIBy+8YI1B9ywLTeE1k4Iw3NXQ1qLzfbzSsthpw=; b=JNzdNVdubehZp28sW4Vv1U/NzUTjnlUYFVOnPWnnUwhbjaZt50JDo0r/1j4eB46llD fyWp5wUGmD+6V+UbkzE9jrcwe5I9SdtzZBe8uX/DuwBfDUbVZtruteSIXPMsMIyaI0hC iajfDXWxYp+1KfDIEUVkRdN8oOBTE0F7HlUnE= 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=xK+2wQjCqSrKJRAge75e1JPtJ1QzvT86g6p+DwCypQJ5/JIuo39AKAUG3F4AiXu3s0 tUuj7hus6tOCZknphLD7fF3O2p6e1D1Gud43xaeo0eKzcL8EnPEFjYL1vO46EfQX91dS 9AP91eb0GPcsZRX/S0/682A9n8vlnbOM/gK5c= MIME-Version: 1.0 Received: by 10.42.176.199 with SMTP id bf7mr18151943icb.82.1293809706341; Fri, 31 Dec 2010 07:35:06 -0800 (PST) Received: by 10.42.239.5 with HTTP; Fri, 31 Dec 2010 07:35:06 -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 15:35:06 +0000 Message-ID: From: Roger Lapthorn 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=90e6ba6e8ee6f4150b0498b68beb X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_40_50,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-m211.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d40914d1df87e4267 X-AOL-IP: 195.171.43.25 X-Mailer: Unknown (No Version) --90e6ba6e8ee6f4150b0498b68beb Content-Type: text/plain; charset=ISO-8859-1 Nothing seen here so far Chris. 73s Roger G3XBM On 31 December 2010 14:12, Andy Talbot wrote: > 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 >>> >>> >> > -- g3xbm-qrp.blogspot.com/ www.g3xbm.co.uk www.youtube.com/user/g3xbm G3XBM GQRP 1678 ISWL G11088 --90e6ba6e8ee6f4150b0498b68beb Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Nothing seen here so far Chris.

73s
Roger G3XBM



<= div class=3D"gmail_quote">On 31 December 2010 14:12, Andy Talbot <andy.g4jnt@gmail.com<= /a>> wrote:
Well that&= #39;s its limit.=A0 8137Hz sampling, 2M FFT for a .0039Hz bin size.=A0=A0= Will leave it running in the hope the frequencies displayed=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 <an= dy.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
<= br>
<= font face=3D"Tahoma" size=3D"2">
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





--
g3xbm-qrp.blogspot.com/=
www.g3xbm.co.= uk
www.youtub= e.com/user/g3xbm
<= /a>G3XBM=A0=A0 GQRP 1678=A0=A0=A0 ISWL G11088
--90e6ba6e8ee6f4150b0498b68beb--