Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mk04.r1000.mx.aol.com (Internet Inbound) with ESMTP id AD7423800008E; Sat, 27 Oct 2012 16:27:28 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TSCxn-00036W-Hh for rs_out_1@blacksheep.org; Sat, 27 Oct 2012 21:26:35 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TSCxm-00036N-Vn for rsgb_lf_group@blacksheep.org; Sat, 27 Oct 2012 21:26:34 +0100 Received: from mail-bk0-f43.google.com ([209.85.214.43]) by relay1.thorcom.net with esmtps (TLSv1:RC4-SHA:128) (Exim 4.77) (envelope-from ) id 1TSCxk-0003Qx-Pe for rsgb_lf_group@blacksheep.org; Sat, 27 Oct 2012 21:26:33 +0100 Received: by mail-bk0-f43.google.com with SMTP id w5so1647474bku.16 for ; Sat, 27 Oct 2012 13:26:31 -0700 (PDT) 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=BhH5TOSvNUGDmBVVVj4ATkvQjsJ3VkTQoK22+25iGhs=; b=Un+JI0rm0BhyWzeWo+niNQkskPlTrlQlhL/aNTuUthwbNm7Ah9qunOqECPTwWQMezH phLuhJb1fEN4qjPmVJrrvFnbN4InObZiOmtrCBDlaCEoOMYUEeEsVx006wj111kfBJnJ ncJg4ZvJwCKzpx0aIhNhI6fSag2RaBsT7HWQzwubgx9pe++i/KXeoXk9W8Rb1iVoYqLT /HlDn/Hpy296PA3GtYdfSg5zZK2hPfdpATn/hmV9j/+W+vme6WU8a5TK6w6SA7iuv1/W D/wuuGb2niloRCvOOS3x7NW4J9lDpp0e3l0Eo0M0fEz8NkNEPXOoOh/u3kQfovH19I9V 1wzQ== MIME-Version: 1.0 Received: by 10.204.0.74 with SMTP id 10mr8325339bka.83.1351369591401; Sat, 27 Oct 2012 13:26:31 -0700 (PDT) Received: by 10.205.40.197 with HTTP; Sat, 27 Oct 2012 13:26:31 -0700 (PDT) In-Reply-To: <508C3D68.6020809@iup.uni-heidelberg.de> References: <508C2AC9.3010109@broadpark.no> <508C3D68.6020809@iup.uni-heidelberg.de> Date: Sat, 27 Oct 2012 21:26:31 +0100 Message-ID: From: Roger Lapthorn To: rsgb_lf_group@blacksheep.org X-Spam-Score: -0.7 (/) 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: This is exciting news being a 2-way mode, especially as it is 9-FSK, so doesn't need a linear PA. With bandwidths as small as 0.4Hz for the long version, no-one will be complaining about how much bandwidth all this digital stuff takes. Unlike OPERA, the software will be well documented and open source. [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [209.85.214.43 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (rogerlapthorn[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 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: 118b9e608370528226a3c3b3aedcdda0 Subject: Re: LF: JT9: A New Digital Mode for MF and LF Content-Type: multipart/alternative; boundary=00151750ddfc74ad7d04cd104000 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=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: mtain-mk04.r1000.mx.aol.com ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d6188508c43b02045 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --00151750ddfc74ad7d04cd104000 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable This is exciting news being a 2-way mode, especially as it is 9-FSK, so doesn't need a linear PA. With bandwidths as small as 0.4Hz for the long version, no-one will be complaining about how much bandwidth all this digital stuff takes. Unlike OPERA, the software will be well documented and open source. There is a danger that, with too many digital modes now available, the activity may be spread too thinly, a point Mal raised some time back I believe Somehow though I suspect JT9 will rapidly become the de-facto digital mode on 472kHz and 136kHz. I hope that one of the internet databases - PSK Reporter I guess, or perhaps an equivalent to WSPRnet - will be able to display JT9 activity as this was one of the great bonuses with WSPR beaconing. I may give it a go on 500kHz next week. 73s Roger G3XBM On 27 October 2012 21:00, Stefan Sch=E4fer < Stefan.Schaefer@iup.uni-heidelberg.de> wrote: > Oh, now Joe has lifted the secret ;-) > He released the mode 2 days ago and a first update yesterday. > > Now it really gets complex which mode to choose. WSPR, Opera, JT9... > But as a digital mode for LF i gues JT9-30 is the most promising at all. > > 73, Stefan/DK7FC > > --=20 http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk https://sites.google.com/site/sub9khz/ http://qss2.blogspot.com/ --00151750ddfc74ad7d04cd104000 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable This is exciting news being a 2-way mode, especially as it is 9-FSK, so doe= sn't need a linear PA. With bandwidths as small as 0.4Hz for the long v= ersion, no-one will be complaining about how much bandwidth all this digita= l stuff takes. Unlike OPERA, the software will be well documented and open = source.

There is a danger that, with too many digital modes now available, the = activity may be spread too thinly, a point Mal raised some time back I beli= eve Somehow though I suspect JT9 will rapidly become the de-facto digital m= ode on 472kHz and 136kHz.

I hope that one of the internet databases - PSK Reporter I guess, or pe= rhaps an equivalent to WSPRnet - will be able to display JT9 activity as th= is was one of the great bonuses with WSPR beaconing.

I may give it a= go on 500kHz next week.

73s
Roger G3XBM


On 27 October = 2012 21:00, Stefan Sch=E4fer <Stefan.Schaefer@iup.uni-= heidelberg.de> wrote:
Oh, now Joe has lifted the secret ;-)
He released the mode 2 days ago and a first update yesterday.

Now it really gets complex which mode to choose. WSPR, Opera, JT9...
But as a digital mode for LF i gues JT9-30 is the most promising at all.
73, Stefan/DK7FC




--
=A0http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
https://sites.google.com/site/sub9khz/
http://qss2.blogspot.com/

=
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