Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id wAAGgUIm010861 for ; Sat, 10 Nov 2018 17:42:31 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1gLWGm-0001us-8j for rs_out_1@blacksheep.org; Sat, 10 Nov 2018 16:38:00 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1gLWGl-0001uj-U0 for rsgb_lf_group@blacksheep.org; Sat, 10 Nov 2018 16:37:59 +0000 Received: from rhcavuit04.kulnet.kuleuven.be ([2a02:2c40:0:c0::25:137]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1gLWGk-0005NL-D9 for rsgb_lf_group@blacksheep.org; Sat, 10 Nov 2018 16:37:58 +0000 X-KULeuven-Envelope-From: rik.strobbe@kuleuven.be X-KULeuven-Scanned: Found to be clean X-KULeuven-ID: 7A8AF120003.A0389 X-KULeuven-Information: Katholieke Universiteit Leuven Received: from icts-p-smtps-1.cc.kuleuven.be (icts-p-smtps-1e.kulnet.kuleuven.be [134.58.240.33]) by rhcavuit04.kulnet.kuleuven.be (Postfix) with ESMTP id 7A8AF120003 for ; Sat, 10 Nov 2018 17:37:44 +0100 (CET) Received: from ICTS-S-EXMBX3.luna.kuleuven.be (icts-s-exmbx3.luna.kuleuven.be [10.112.11.11]) (using TLSv1.2 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by icts-p-smtps-1.cc.kuleuven.be (Postfix) with ESMTPS id 6EEFE40B6 for ; Sat, 10 Nov 2018 17:37:44 +0100 (CET) Received: from ICTS-S-EXMBX27.luna.kuleuven.be (10.112.11.62) by ICTS-S-EXMBX3.luna.kuleuven.be (10.112.11.11) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sat, 10 Nov 2018 17:37:44 +0100 Received: from ICTS-S-EXMBX27.luna.kuleuven.be (10.112.11.62) by ICTS-S-EXMBX27.luna.kuleuven.be (10.112.11.62) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sat, 10 Nov 2018 17:37:44 +0100 Received: from ICTS-S-EXMBX27.luna.kuleuven.be ([fe80::291a:cc4f:6953:698a]) by ICTS-S-EXMBX27.luna.kuleuven.be ([fe80::291a:cc4f:6953:698a%25]) with mapi id 15.00.1395.000; Sat, 10 Nov 2018 17:37:44 +0100 X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe To: "rsgb_lf_group@blacksheep.org" Thread-Topic: LF: 1476 kHz AM Thread-Index: AQHUeQ2mQ2A6wnMYfECpXX+GfyvqsaVJM+sF Date: Sat, 10 Nov 2018 16:37:44 +0000 Message-ID: <1541867794705.31956@kuleuven.be> References: <1926011534.196921.1541865263063.ref@mail.yahoo.com>,<1926011534.196921.1541865263063@mail.yahoo.com> In-Reply-To: <1926011534.196921.1541865263063@mail.yahoo.com> Accept-Language: nl-BE, en-GB, en-US Content-Language: nl-BE X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.112.50.1] MIME-Version: 1.0 X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: ??Hello Markus, FSKing the carrier a few Hz would be easy to implement and easy to detect. One option would be DFCW another would be WSPR. For both you would need no more than arduino board (or something similar) that only cost a few Euro. [...] 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 [2a02:2c40:0:c0:0:0:25:137 listed in] [list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: efdc09b6b31095aa2dc5c6d2552910d5 Subject: Re: LF: 1476 kHz AM Content-Type: multipart/alternative; boundary="_000_154186779470531956kuleuvenbe_" 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_20_30,HTML_MESSAGE, TO_ADDRESS_EQ_REAL 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 --_000_154186779470531956kuleuvenbe_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable ??Hello Markus, FSKing the carrier a few Hz would be easy to implement and easy to detect. One option would be DFCW another would be WSPR. For both you would need no = more than arduino board (or something similar) that only cost a few Euro. 73, Rik ON7YD - OR7T ________________________________ Van: owner-rsgb_lf_group@blacksheep.org namens Markus Vester Verzonden: zaterdag 10 november 2018 16:54 Aan: rsgb_lf_group@blacksheep.org Onderwerp: Re: LF: 1476 kHz AM Many thanks again also to Rik, Ian, Stefan, Mauro, Ewald for your fine obse= rvations and suggestions, both on behalf of Ralph and from myself. I can s= ay that we are overwhelmed by the number of positive responses. Yes some type of subaudio ID on the carrier would surely make sense. I had = thought of a phase modulation scheme (perhaps similar to the 162 kHz timeco= de), but at this speed it may have a negative impact on synchroneous AM dem= odulators which use a PLL to regenerate the carrier. A very slow (several s= econds) but characteristic frequency modulation may indeed be the best opti= on. Best 73, Markus -----Urspr=FCngliche Mitteilung----- Von: Mauro Giroletti An: rsgb_lf_group Verschickt: Sa, 10. Nov. 2018 16:35 Betreff: R: RE: LF: 1476 kHz AM Hi, reception 1476khz my locator JN45nk . 73 Mauro Ik2GFT ----Messaggio originale---- Da: cpaul@gmx.net Data: 10-nov-2018 15.59 A: Ogg: RE: LF: 1476 kHz AM The carrier is right now audible and visible on a battery powered portable SDR (Reuter Pocket) with just a small active ferrite antenna. 73 Clemens DL4RAJ --_000_154186779470531956kuleuvenbe_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

​​Hello Markus,


FSKing the carrier a few Hz would be easy to implement and easy to detec= t.

One option would be DFCW another would be WSPR. For both you would need = no more than arduino board (or something similar) that only&= nbsp;cost a few Euro.


73, Rik  ON7YD - OR7T


Van: owner-rsgb_lf_group@bl= acksheep.org <owner-rsgb_lf_group@blacksheep.org> namens Markus Veste= r <markusvester@aol.com>
Verzonden: zaterdag 10 november 2018 16:54
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: 1476 kHz AM
 
Many thanks again also to Rik, Ian, Stefan, Mauro, Ewald for your fine obse= rvations and suggestions, both on behalf of Ralph and from myself. &nb= sp;I can say that we are overwhelmed by the number of positive respons= es.

Yes some type of subaudio ID on the carrier would surely make sen= se. I had thought of a phase modulation scheme (perhaps similar to&nbs= p;the 162 kHz timecode), but at this speed it may have a negative impa= ct on synchroneous AM demodulators which use a PLL to regenerate the carrier. A very slow (several seconds) but characteristic frequency m= odulation may indeed be the best option.

Best 73,
Markus


-----Urspr=FCngliche Mitteilung-----
Von: Mauro Giroletti <mauro.giroletti@alice.it>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 10. Nov. 2018 16:35
Betreff: R: RE: LF: 1476 kHz AM

Hi,
reception  1476khz my locator JN45nk .
73
Mauro Ik2GFT

----Messaggio originale----
Da: cpaul@gmx.net
Data: 10-nov-2018 15.59
A: <rsgb_lf_group@blacksheep.org>
Ogg: RE: LF: 1476 kHz AM

The carrier is right now audible and visible on a
battery powered portable SDR (Reuter Pocket)
with just a small active ferrite antenna.

73
Clemens
DL4RAJ 



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