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 wAANRekF013388 for ; Sun, 11 Nov 2018 00:27:41 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1gLcay-0004Ty-1G for rs_out_1@blacksheep.org; Sat, 10 Nov 2018 23:23:16 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1gLcau-0004Tp-Nd for rsgb_lf_group@blacksheep.org; Sat, 10 Nov 2018 23:23:12 +0000 Received: from mail-ed1-x52c.google.com ([2a00:1450:4864:20::52c]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1gLcas-0006GF-FE for rsgb_lf_group@blacksheep.org; Sat, 10 Nov 2018 23:23:11 +0000 Received: by mail-ed1-x52c.google.com with SMTP id h21-v6so4518649edq.9 for ; Sat, 10 Nov 2018 15:23:09 -0800 (PST) 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=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=oEe+n8tybr44DFbzXOAPnwAd4UNyIHci6aguDh7sLJI=; b=oeut6CQqO3EGSv8bsoZ55KsB9lZYD0OHyaTObLCmeT/xpD1lSoR3fNwwD7PO/N0JHU 90LNKVnqjnZE0LHIEoSCipYi7YjS/43SHLgdqKzBtyDUx16JBSEsoINFJPtvjNsCX1+R 5xUenVwCXJ2tzi6nOaS1qKWk4zutdUGCJhxOigyzLUn0OsPDU3bVpxCV6a1qwPs2cR7D KMPpiB9Ziqrsd58Bf6mEqnYTHWhVEWuEtYRWns4hVqg3A7tLjerHmt5AGCu99xaStbE8 sylOnhbOpys/rEAfE9Xlm5iydX98WNPlouJcGq88jmdy1Ry6VvU4ejkR+wAONd3yC14a IXUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=oEe+n8tybr44DFbzXOAPnwAd4UNyIHci6aguDh7sLJI=; b=aEONaObMU6SDpoXXyd7zQPxJsjyc7nI2gpQrh8Fr1QtPQS9b1aK9O3T3tzV/ACC1TJ 7YFTkinFPuUHLjeTUdiuuUKJOflJyMDdNvkIFT0hucTMQfldCsSfPW0yJ/HYMSmBlnYE ALqtRdiTeldehMzeYoNi09/Cmi5oNouyRQOPQzGiY7ah71r8R06DgUuN7yVgMhgMa6MV kJgvf6Zy+sTMertJd5/OqVoqHyWsN4+HIaJW0WebDy8G4+gk+0uqty+bvAIb5GSGWWkQ lrr42RFopvnxgvYogqwWvASlxAwXFepfmYp2scBjNSZENw9F6LFwEeEPv0dnxrd73LB5 4h7Q== X-Gm-Message-State: AGRZ1gLdIpuiga686hQQ9DubnGugB4DXuXjWP3Vj7oOxlTVDTZbkemzj FnDuX39ET9fzquEsh8hairKcW4VprH0fNKbkRB8jQgTT X-Google-Smtp-Source: AJdET5fA+MGSKiHAj0hqhLFxhW/pIycnXA77f5xaBUjwuywypsKKXBfB55nE8SK3q7ryLP08itCiqOIGOv7d5WAGEEg= X-Received: by 2002:a50:a307:: with SMTP id 7-v6mr7171087edn.231.1541892188539; Sat, 10 Nov 2018 15:23:08 -0800 (PST) MIME-Version: 1.0 References: <1926011534.196921.1541865263063.ref@mail.yahoo.com> <1926011534.196921.1541865263063@mail.yahoo.com> <1541867794705.31956@kuleuven.be> In-Reply-To: <1541867794705.31956@kuleuven.be> From: Riccardo Zoli Date: Sun, 11 Nov 2018 00:22:56 +0100 Message-ID: To: LF Group X-Spam-Score: 1.3 (+) 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: Hi Markus, All Audible sidebands in JN64bw (detuned LF TX inv. "L", SLMS HP 3746A, 2nd IF processed by Spectrum Lab, BW=100 Hz). Link to MP3 record attached. https://www.dropbox.com/s/c5mfkn94vtae6o5/DL2NDO_1476.mp3?dl=0 [...] Content analysis details: (1.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:52c listed in] [list.dnswl.org] 0.2 FREEMAIL_ENVFROM_END_DIGIT Envelope-from freemail username ends in digit (riccardozoli80[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (riccardozoli80[at]gmail.com) 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid 1.0 FREEMAIL_REPLY From and body contain different freemails X-Scan-Signature: 913d7a7c91a460d176c89ad756da16f9 Subject: Re: LF: 1476 kHz AM Content-Type: multipart/alternative; boundary="0000000000002e1021057a57c077" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.7 required=5.0 tests=FROM_ENDS_IN_NUMS,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 --0000000000002e1021057a57c077 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Markus, All Audible sidebands in JN64bw (detuned LF TX inv. "L", SLMS HP 3746A, 2nd IF processed by Spectrum Lab, BW=3D100 Hz). Link to MP3 record attached. https://www.dropbox.com/s/c5mfkn94vtae6o5/DL2NDO_1476.mp3?dl=3D0 73 de Riccardo IW4DXW Il giorno Sab 10 Nov 2018, 17:40 Rik Strobbe ha scritto: > =E2=80=8B=E2=80=8BHello 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 n= o > more than arduino board (or something similar) that only cost a few Euro. > > > 73, Rik ON7YD - OR7T > > > ------------------------------ > *Van:* owner-rsgb_lf_group@blacksheep.org < > owner-rsgb_lf_group@blacksheep.org> namens Markus Vester < > 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 > observations and suggestions, both on behalf of Ralph and from myself. I > can say that we are overwhelmed by the number of positive responses. > > Yes some type of subaudio ID on the carrier would surely make sense. I ha= d > thought of a phase modulation scheme (perhaps similar to the 162 kHz > timecode), but at this speed it may have a negative impact on synchroneou= s > AM demodulators which use a PLL to regenerate the carrier. A very slow > (several seconds) but characteristic frequency modulation may indeed be t= he > best option. > > Best 73, > Markus > > > -----Urspr=C3=BCngliche 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 > > > > --0000000000002e1021057a57c077 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Markus, All

Audible sidebands in JN64bw= (detuned LF TX inv. "L", SLMS HP 3746A, 2nd IF processed by Spec= trum Lab, BW=3D100 Hz).
Link to MP3 record attached.=

=
73 de Riccardo IW4DXW




<= div dir=3D"ltr">Il giorno Sab 10 Nov 2018, 17:40 Rik Strobbe <rik.strobbe@kuleuven.be<= /a>> ha scritto:

=E2=80=8B=E2=80=8BHello 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=C2=A0arduino=C2=A0board (or something similar)=C2=A0that only= =C2=A0cost a few Euro.


73, Rik=C2=A0 ON7YD - OR7T


Van: owner-rsgb_lf_group@blacksheep.org= <owner-rsgb_lf_group@blacksheep.org> namens Mark= us Vester <markusvester@aol.com>
Verzonden: zaterdag 10 november 2018 16:54
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: 1476 kHz AM
=C2=A0
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.=C2=A0=C2= =A0I can say that we are=C2=A0overwhelmed by the number of positive respons= es.

Yes some type of subaudio=C2=A0ID=C2=A0on the carrier would surely make sen= se. I had thought of=C2=A0a phase modulation scheme (perhaps similar to=C2= =A0the 162 kHz timecode), but at this speed it may have=C2=A0a negative imp= act on synchroneous AM demodulators which use a PLL to regenerate=C2=A0the carrier.=C2=A0A very slow (several seconds) but characteristic frequency m= odulation may indeed be the best option.

Best 73,
Markus


-----Urspr=C3=BCngliche 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=C2=A0 1476khz my locator JN45nk .
73
Mauro Ik2GFT

----Messaggio originale----
Da: c= paul@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=C2=A0



--0000000000002e1021057a57c077--