Return-Path: X-Spam-DCC: paranoid 1290; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.3 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_AOL_TAGS,HTML_40_50,HTML_MESSAGE,UNPARSEABLE_RELAY autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u19CXWMM026899 for ; Tue, 9 Feb 2016 13:33:33 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aT7Q2-0007LV-LQ for rs_out_1@blacksheep.org; Tue, 09 Feb 2016 12:29:22 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aT7Q2-0007LM-B5 for rsgb_lf_group@blacksheep.org; Tue, 09 Feb 2016 12:29:22 +0000 Received: from omr-a010e.mx.aol.com ([204.29.186.54]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.86) (envelope-from ) id 1aT7P9-0000QO-E5 for rsgb_lf_group@blacksheep.org; Tue, 09 Feb 2016 12:29:21 +0000 Received: from mtaomg-mbc01.mx.aol.com (mtaomg-mbc01.mx.aol.com [172.26.221.143]) by omr-a010e.mx.aol.com (Outbound Mail Relay) with ESMTP id C1E48380009A for ; Tue, 9 Feb 2016 07:28:09 -0500 (EST) Received: from core-tmp207.mail.aol.com (core-tmp207.mail.aol.com [10.72.121.79]) by mtaomg-mbc01.mx.aol.com (OMAG/Core Interface) with ESMTP id 5E0A638000081 for ; Tue, 9 Feb 2016 07:28:09 -0500 (EST) References: <56B8EDAF.10802@abelian.org> To: rsgb_lf_group@blacksheep.org In-Reply-To: <56B8EDAF.10802@abelian.org> X-MB-Message-Source: WebUI MIME-Version: 1.0 From: Markus Vester X-MB-Message-Type: User X-Mailer: AOL Webmail BASIC Received: from 192.35.17.17 by webmail-vd008.sysops.aol.com (205.188.20.112) with HTTP (WebMailUI); Tue, 09 Feb 2016 07:28:09 -0500 Message-Id: <8D3314C77C7974A-1ECC-5D240F@webmail-vd008.sysops.aol.com> X-Originating-IP: [192.35.17.17] Date: Tue, 9 Feb 2016 07:28:09 -0500 x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1455020889; bh=AxAla6d+6DLSzbkDjuY2eED6je07sXyKK94RdKYyIK8=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=EZrFn5o+obIhJqTbVJR5GIJyeRJZmsOiWJ13lLr3xetS1/W7vOxZC0M3Vu3nkxCb6 CcSdG0T/FAEZW6mWexfyjN0J3wZRO3IifXFY0s/QqP9ZMK4lJtAQ+C12ZnbyTC7eFc TJswt5mK8Q2akKqZAnBXIkJxihDcuOK2zzdMNPTc= x-aol-sid: 3039ac1add8f56b9db593314 X-Scan-Signature: 118b9e608370528226a3c3b3aedcdda0 Subject: VLF: ebsynth Content-Type: multipart/alternative; boundary="--------MB_8D3314C782DF2C0_1ECC_A93EBC_webmail-vd008.sysops.aol.com" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: RO X-Status: X-Keywords: X-UID: 6761 This is a multi-part message in MIME format. ----------MB_8D3314C782DF2C0_1ECC_A93EBC_webmail-vd008.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="us-ascii" Hi=20Paul,=0D=0A?=0D=0AI'm=20wondering=20if=20you'd=20want=20to=20use=20GPS=20an= d=20RF=20feedback=20to=20stabilize=20the=20phase?=20Connecting=201pps=20and=20an= =20antenna=20probe=20to=20a=20stereo=20input=20soundcard=20would=20allow=20you=20= to=20monitor=20the=20emitted=20phase=20and=20adjust=20the=20oscillator=20accordi= ngly.=20That=20way=20you'd=20have=20control=20over=20absolute=20phase,=20compens= ating=20for=20dropouts,=20samplerate=20crystal=20variations=20and=20antenna=20tu= ning.=20For=20non-integer=20Hz=20carrier=20frequencies=20you'll=20also=20need=20= a=20way=20to=20identify=20which=20second=20a=20pulse=20belongs=20to,=20e.g.=20by= =20means=20of=20NTP=20time=20or=20GPS=20messages.=0D=0A?=0D=0AI'm=20not=20knowle= dgeable=20about=20Linux=20but=20at=20least=20have=20managed=20to=20run=20a=20sou= ndcard=20on=20a=20RasPi.=20It=20would=20be=20nice=20to=20use=20it=20for=20stable= =20carrier=20and=20PSK=20signal=20generation.=0D=0A?=0D=0A>=20There=20was=20a= =20gap=20in=20the=20rain=20on=20Sunday=20so=20I=20put=20up=20a=20200=20metre=20l= ong=20wire.=0D=0A?=0D=0AGreat!=20Should=20we=20start=20looking=20for=20your=20si= gnal=20on=20477.700=20kHz?=0D=0A?=0D=0AAll=20the=20best,=0D=0AMarkus=0D=0A=0D=0A= =20=0D=0A=0D=0A=0D=0A=0D=0A-----Original=20Message-----=0D=0AFrom:=20Paul=20Nich= olson=20<vlf0403@abelian.org>=0D=0ATo:=20rsgb_lf_group=20<rsgb_lf_group= @blacksheep.org>=0D=0ASent:=20Mon,=20Feb=208,=202016=208:36=20pm=0D=0ASubject= :=20Re:=20VLF:=20EbNaut=208270.1=20Sunday=0D=0A...?=0D=0AHere=20I've=20been=20pl= aying=20with=20ebsynth=20which=20is=20now=20=0D=0Aat=20version=200.5=20and=20has= =20some=20improvements.=20=20It=20uses=20=0D=0Amuch=20less=20CPU=20and=20does=20= the=20phase=20modulation=20using=20=0D=0Aa=20sigmoid=20shaped=20slew.=20=0D=0A=20= =0D=0A=20=20http://abelian.org/ebnaut/ebsynth.shtml=20=0D=0A=20=0D=0AI=20built=20= a=20multiplier=20chain,=2053077.777778=20*=203=20*=203=20and=20=0D=0Ahave=20a=20= nice=2010V=20477=20kHz=20signal=20which=20is=20rock=20steady=20=0D=0Aand=20the=20= modulation=20clicks=20don't=20seem=20to=20spread.=20=0D=0A=20=0D=0AThere=20was=20= a=20gap=20in=20the=20rain=20on=20Sunday=20so=20I=20put=20up=20a=20=0D=0A200=20me= tre=20long=20wire.=20=0D=0A=20=0D=0A--=20=0D=0APaul=20Nicholson=20=0D=0A--?=0D=0A= =0D=0A?=20=0A=0A ----------MB_8D3314C782DF2C0_1ECC_A93EBC_webmail-vd008.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii" =0D=0AHi=20Paul,=0D=0A=0D=0A =0D=0A=0D=0AI'm=20wondering=20if=20you'd=20= want=20to=20use=20GPS=20and=20RF=20feedback=20to=20stabilize=20the=20phase?=20Co= nnecting=201pps=20and=20an=20antenna=20probe=20to=20a=20stereo=20input=20soundca= rd=20would=20allow=20you=20to=20monitor=20the=20emitted=20phase=20and=20adjust=20= the=20oscillator=20accordingly.=20That=20way=20you'd=20have=20control=20over=20a= bsolute=20phase,=20compensating=20for=20dropouts,=20samplerate=20crystal=20varia= tions=20and=20antenna=20tuning.=20For=20non-integer=20Hz=20carrier=20frequencies= =20you'll=20also=20need=20a=20way=20to=20identify=20which=20second=20a=20pulse=20= belongs=20to,=20e.g.=20by=20means=20of=20NTP=20time=20or=20GPS=20messages.= =0D=0A=0D=0A =0D=0A=0D=0AI'm=20not=20knowledgeable=20about=20Linux=20but=20= at=20least=20have=20managed=20to=20run=20a=20soundcard=20on=20a=20RasPi.=20It=20= would=20be=20nice=20to=20use=20it=20for=20stable=20carrier=20and=20PSK=20signal=20= generation.=0D=0A=0D=0A =0D=0A=0D=0A>=20There=20was=20a=20gap=20= in=20the=20rain=20on=20Sunday=20so=20I=20put=20up=20a=20200=20metre=20long=20wir= e.=0D=0A=0D=0A =0D=0A=0D=0AGreat!=20Should=20we=20start=20looking=20= for=20your=20signal=20on=20477.700=20kHz?=0D=0A=0D=0A =0D=0A=0D=0A= Al= l=20the=20best,
=0D=0AMarkus
=0D=0A=0D=0A=0D=0A
=20
=0D=0A=0D=0A=0D=0A

=0D=0A
=0D=0A-----Original=20Message-----
=0D=0AFr= om:=20Paul=20Nicholson=20<vlf0403@abelian.org>
=0D=0ATo:=20rsgb_lf_grou= p=20<rsgb_lf_group@blacksheep.org>
=0D=0ASent:=20Mon,=20Feb=208,=202016= =208:36=20pm
=0D=0ASubject:=20Re:=20VLF:=20EbNaut=208270.1=20Sunday
=0D=0A= ... 
=0D=0AHere=20I've=20been=20playing=20with=20ebsynth=20which=20i= s=20now=20
=0D=0Aat=20version=200.5=20and=20has=20some=20improvements.=20=20I= t=20uses=20
=0D=0Amuch=20less=20CPU=20and=20does=20the=20phase=20modulation=20= using=20
=0D=0Aa=20sigmoid=20shaped=20slew.=20
=0D=0A=20
=0D=0A=20=20http://a= belian.org/ebnaut/ebsynth.shtml=20
=0D=0A=20
=0D=0AI=20built=20a=20mul= tiplier=20chain,=2053077.777778=20*=203=20*=203=20and=20
=0D=0Ahave=20a=20nic= e=2010V=20477=20kHz=20signal=20which=20is=20rock=20steady=20
=0D=0Aand=20the=20= modulation=20clicks=20don't=20seem=20to=20spread.=20
=0D=0A=20
=0D=0AThere= =20was=20a=20gap=20in=20the=20rain=20on=20Sunday=20so=20I=20put=20up=20a=20
=0D= =0A200=20metre=20long=20wire.=20
=0D=0A=20
=0D=0A--=20
=0D=0APaul=20Nic= holson=20
=0D=0A-- 
=0D=0A
=0D=0A =20
=0D=0A ----------MB_8D3314C782DF2C0_1ECC_A93EBC_webmail-vd008.sysops.aol.com--