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[195.171.43.25]) by mx.google.com with ESMTP id ui5si5518880wjc.22.2013.12.09.13.07.16 for ; Mon, 09 Dec 2013 13:07:17 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org; dkim=pass header.i=@mx.aol.com Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Vq7SZ-0002Vq-Jw for rs_out_1@blacksheep.org; Mon, 09 Dec 2013 20:29:43 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Vq7SZ-0002Vh-20 for rsgb_lf_group@blacksheep.org; Mon, 09 Dec 2013 20:29:43 +0000 Received: from omr-d04.mx.aol.com ([205.188.109.201]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1Vq7SX-0007CE-1F for rsgb_lf_group@blacksheep.org; Mon, 09 Dec 2013 20:29:41 +0000 Received: from mtaout-db06.r1000.mx.aol.com (mtaout-db06.r1000.mx.aol.com [172.29.51.198]) by omr-d04.mx.aol.com (Outbound Mail Relay) with ESMTP id 34649700043AE for ; Mon, 9 Dec 2013 15:29:38 -0500 (EST) Received: from White (95-91-238-155-dynip.superkabel.de [95.91.238.155]) by mtaout-db06.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 09020E0000BB for ; Mon, 9 Dec 2013 15:29:34 -0500 (EST) Message-ID: From: "Markus Vester" To: References: <8D0C31F8DA1EC8D-9A4-2C1C@webmail-vd013.sysops.aol.com> <52A6086C.6030405@iup.uni-heidelberg.de> Date: Mon, 9 Dec 2013 21:29:31 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20121107; t=1386620978; bh=4kBzjXZmF/cLnrbRToyOjQPoc+fmwtYEFOA8gfetugU=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=cVoNO1EeOABBXI10aAXiHirNs2vnt53Jn1Hp/E7LAmpsoy/wlly9q2qlZBbK1S8eh EsIPvkxMAcca8HfCjGwXkwvkzz3cfNpdmK12iXIM7CzMnLkzuMwHXQDz0Zzk34Cemx fBaSFtCP4tAj7peIbe1F2qUYQBk7d+gmZu8eZdTg= x-aol-sid: 3039ac1d33c652a6282e4f20 X-AOL-IP: 95.91.238.155 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Stefan, xx = 32 ... for you ;-) Driving your antenna at the institute to 30 kV, you will easily produce a milliwatt ERP. Opds-32 will require about 20 dB SNR in a "6000" window (0.7 mHz noise bandwidth). You will surely reach OK2BVG and myself, and most likely PA1SDB, G3ZJO and others. We could probably persuade Paul Nicholson to send a raw spectrum in ASCII format, and evaluate it with opds. Yes, let's try it soon! [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [205.188.109.201 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) -0.0 SPF_PASS SPF: sender matches SPF record -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: da9a90c67b7e22f6718c156d8d99c1a4 Subject: Re: LF: OPDSxx on VLF? Content-Type: multipart/alternative; boundary="----=_NextPart_000_0003_01CEF525.BFB4B810" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,HTML_MESSAGE, MISSING_OUTLOOK_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 Status: O X-Status: X-Keywords: X-UID: 2534 Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_0003_01CEF525.BFB4B810 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Stefan,=20 xx =3D 32=20 ... for you ;-) Driving your antenna at the institute to 30 kV, you will = easily produce a milliwatt ERP. Opds-32 will require about 20 dB SNR in = a "6000" window (0.7 mHz noise bandwidth). You will surely reach OK2BVG = and myself, and most likely PA1SDB, G3ZJO and others. We could probably = persuade Paul Nicholson to send a raw spectrum in ASCII format, and = evaluate it with opds. Yes, let's try it soon! The difficulty with slower speed is mainly that it's harder to set up - = if you have to restart the data gathering a couple of times, a day may = be quickly gone without results. With experience things will stabilize, = and we can venture to very long times like Op-256 (aka 4H). This is what = I would probably try to use from my home antenna (10 =C2=B5W ERP). Four = hours nonstop would certainly be a challenge with a kite... Integrating very much longer seems to make less sense, as QRN usually = increases sometime in the afternoon. But then one can think of a message = sent over weeks, one bit a day - didn't DJ8WX try something like that a = while ago?=20 Best 73, Markus (DF6NM) From: Stefan Sch=C3=A4fer=20 Sent: Monday, December 09, 2013 7:14 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: OPDSxx on VLF? Markus, What about a OPDS test on 8.97 kHz? You and Lubos and maybe some = stations in PA could deode me in OPDSxx, where xx may be 128 or 256?=20 128, i.e. 2 hours, that's not slow for a complete call on the 33 km = band, about like DFCW-600. What do you think? 73, Stefan ------=_NextPart_000_0003_01CEF525.BFB4B810 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Stefan,
 
xx =3D 32
 
... for you ;-) Driving your antenna at the institute to 30 kV, = you will=20 easily produce a milliwatt ERP. Opds-32 = will=20 require about 20 dB SNR in a "6000" window (0.7 mHz noise = bandwidth).=20 You will surely reach OK2BVG and myself, and most=20 likely PA1SDB, G3ZJO and others. We could probably = persuade Paul=20 Nicholson to send a raw spectrum in ASCII format, and evaluate = it with=20 opds. Yes, let's try it = soon!
 
The difficulty with slower speed is = mainly that=20 it's harder to set up - if you have to restart the data gathering a = couple of=20 times, a day may be quickly gone without results. With experience = things=20 will stabilize, and we can venture to very long times like Op-256 = (aka=20 4H). This is what I would probably try to use from my home antenna = (10 =C2=B5W=20 ERP). Four hours nonstop would certainly be a challenge with a=20 kite...
 
Integrating very much longer seems = to make=20 less sense, as QRN usually increases sometime in = the afternoon. But=20 then one can think of a message sent over weeks, one bit a day = -=20 didn't DJ8WX try something like that a while = ago? 
 
Best 73,
Markus (DF6NM)
 
 
From:=20 Stefan Sch=C3=A4fer
Sent: Monday, December 09, = 2013 7:14=20 PM
To: rsgb_lf_group@blacksheep.org
Subject: LF: OPDSxx on=20 VLF?

Markus,

What about a OPDS test = on 8.97 kHz?=20 You and Lubos and maybe some stations in PA could deode me in OPDSxx, = where xx=20 may be 128 or 256?
128, i.e. 2 hours, that's not slow for a complete = call on=20 the 33 km band, about like DFCW-600.

What do you = think?

73,=20 Stefan


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