Return-Path: X-Spam-DCC: paranoid 1170; 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 t9O8dCAN014540 for ; Sat, 24 Oct 2015 10:39:13 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZpuHq-0002pT-2u for rs_out_1@blacksheep.org; Sat, 24 Oct 2015 09:34:50 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZpuHp-0002pG-EB for rsgb_lf_group@blacksheep.org; Sat, 24 Oct 2015 09:34:49 +0100 Received: from omr-a018e.mx.aol.com ([204.29.186.64]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.86) (envelope-from ) id 1ZpuGl-0003Ut-5q for rsgb_lf_group@blacksheep.org; Sat, 24 Oct 2015 09:34:48 +0100 Received: from mtaomg-aaf01.mx.aol.com (mtaomg-aaf01.mx.aol.com [172.26.127.99]) by omr-a018e.mx.aol.com (Outbound Mail Relay) with ESMTP id 4ED9138000BD for ; Sat, 24 Oct 2015 04:33:26 -0400 (EDT) Received: from core-afa07f.mail.aol.com (core-afa07.mail.aol.com [172.27.24.7]) by mtaomg-aaf01.mx.aol.com (OMAG/Core Interface) with ESMTP id 2907A38000081 for ; Sat, 24 Oct 2015 04:33:26 -0400 (EDT) References: <8D2DC4D67AA24C4-1774-72319C@webmail-vm087.sysops.aol.com> To: rsgb_lf_group@blacksheep.org In-Reply-To: <8D2DC4D67AA24C4-1774-72319C@webmail-vm087.sysops.aol.com> X-MB-Message-Source: WebUI MIME-Version: 1.0 From: Markus Vester X-MB-Message-Type: User X-Mailer: AOL Webmail BASIC Received: from 188.192.95.60 by webmail-vm004.sysops.aol.com (149.174.183.33) with HTTP (WebMailUI); Sat, 24 Oct 2015 04:33:25 -0400 Message-Id: <8D2DC4DC9038564-9B84-17A4E3@webmail-vm004.sysops.aol.com> X-Originating-IP: [188.192.95.60] Date: Sat, 24 Oct 2015 04:33:26 -0400 x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1445675606; bh=ARkHR3AjOMD3dupiRnJ0jEw/5nDtMXjdt5JURIMWla0=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=XDxWCPs8L16vYrwsBQMBAx5Zk3ri4X/vg8b+zkqxcqoJ3EQk4lRC3jnCuPojL4F5g /C5tkW8K7/Xb+OfopsDLkpxdV5ywsuwwlv+FQKV13flgtmwg+0L3V64zcladqfdaQJ x/jK+dPM/mXEgQF23wZP5cVeCv6/UoZpQPGdjGpg= x-aol-sid: 3039ac1a7f63562b42565dee X-Scan-Signature: 1bc6486c2865e7dc2ff7578e6d7fc226 Subject: Re: LF: Coherent BPSK on LF using EbNaut Content-Type: multipart/alternative; boundary="--------MB_8D2DC4DC9142EE1_9B84_2C8324_webmail-vm004.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: O X-Status: X-Keywords: X-UID: 4599 This is a multi-part message in MIME format. ----------MB_8D2DC4DC9142EE1_9B84_2C8324_webmail-vm004.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Hi=20Edgar,=0D=0A=20=20=C2=A0=0D=0A=20=20yes,=20sure.=0D=0A=20=20=20=0D=0A=20=20= On=20the=20RX=20side,=20you=20could=C2=A0use=20one=20of=20your=20IDC's=20with=20= a=20Rubidium-derived=20LO=20(eg=20125=20kHz),=20and=20preferably=201pps=20lock=20= for=20the=20SpecLab=20samplerate..=C2=A0=0D=0A=20=0D=0A=20=20On=20the=20TX=20sid= e,=20a=20stable=20and=20known=20frequency=20is=20needed.=20Here=20in=20Europe,=20= there's=20probably=C2=A0DK7FC,=20IZ7SLZ,=20and=20myself,=20but=20currently=20onl= y=20Stefan=20would=20be=20able=C2=A0to=20generate=C2=A0a=20strong=20enough=20sig= nal=20(after=20rebuilding=20his=20LF=20coil).=C2=A0W1TAG,=20W1VD,=20VO1NA=20and=20= perhaps=20others=20might=20be=20American=20candidates.=0D=0A=20=20=C2=A0=0D=0A=20= =20The=20difficulty=20is=20that=20it's=20a=20game=20of=20hit=20and=20miss:=20The= =20PSK=20modulation=20makes=20a=20weak=20signal=C2=A0completely=20invisible=20-=20= there=20is=20nothing=20to=20synchronize=20to,=20and=20if=20you=20haven't=20succe= ssfully=20decoded=20the=C2=A0message=20there=20is=20no=20way=20of=20even=20telli= ng=20whether=20the=20signal=C2=A0was=20there=20at=20all.=C2=A0If=C2=A0one=C2=A0d= oesn't=20know=20a=20priori=20when=20propagation=20is=20open,=20one=20might=20was= te=20a=20lot=20of=20energy=20and=20time,=C2=A0which=20would=20have=20been=20bett= er=20invested=20in=20a=20simple=20carrier=20detection=20or=20a=20few=20visual=20= DFCW=20dashes.=20I=20think=20that's=C2=A0the=20main=C2=A0reason=20why=20Stefan=20= has=20yet=20been=20reluctant=20regarding=C2=A0PSK.=0D=0A=20=20=C2=A0=0D=0A=20=20= Best=2073,=0D=0A=20=20Markus=0D=0A=20=20=0D=0A=20=C2=A0=0D=0A=20-----Urspr=C3=BC= ngliche=20Mitteilung-----=20=0D=0A=20Von:=20edgar=20<edgarjtwining@virginbroa= dband.com.au>=0D=0A=20An:=20rsgb_lf_group=20<rsgb_lf_group@blacksheep.org&= gt;=0D=0A=20Verschickt:=20Sa,=2024=20Okt=202015=204:02=20am=0D=0A=20Betreff:=20R= e:=20LF:=20Coherent=20BPSK=20on=20LF=20using=20EbNaut=0D=0A=20=0D=0A=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20Hi=20Markus,=0D=0A=20= =20=20=20=20=20=20=20=0D=0A=20=20=20=20=20=20=20=20Is=20it=20feasible=20to=20try= =20receiving=20Coherent=20BPSK=20at=20Moonah?=0D=0A=20=20=20=20=20=20=20=20=0D=0A= =20=20=20=20=20=20=20=20Regards,=20Edgar=0D=0A=20=20=20=20=20=20=20=20Moonah,=20= Tasmania.=0D=0A=20=20=20=20=20=20=20=20=20=0D=0A=20=20=20=20=0D=0A=20=20=20=0D=0A= =20=0A=0A ----------MB_8D2DC4DC9142EE1_9B84_2C8324_webmail-vm004.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8" =0D=0A=0D=0A=0D=0A
Hi=20Edgar,
=0D=0A=0D=0A=20=20=0D=0A =0D=0A=20=20=0D=0Ayes,=20sure.=0D=0A=20=20=0D=0A
=20
=0D=0A=20=20=0D=0A
On=20the=20= RX=20side,=20you=20could use=20one=20of=20your=20IDC's=20with=20a=20Rubidiu= m-derived=20LO=20(eg=20125=20kHz),=20and=20preferably=201pps=20lock=20for=20the=20= SpecLab=20samplerate.. 
=0D=0A=20
=0D=0A=20=20=0D=0A
On=20the=20= TX=20side,=20a=20stable=20and=20known=20frequency=20is=20needed.=20Here=20in=20E= urope,=20there's=20probably DK7FC,=20IZ7SLZ,=20and=20myself,=20but=20curren= tly=20only=20Stefan=20would=20be=20able to=20generate a=20strong=20eno= ugh=20signal=20(after=20rebuilding=20his=20LF=20coil). W1TAG,=20W1VD,=20VO1= NA=20and=20perhaps=20others=20might=20be=20American=20candidates.
=0D=0A=20= =20=0D=0A
 
=0D=0A=20=20=0D=0A
The=20difficulty=20is=20that=20= it's=20a=20game=20of=20hit=20and=20miss:=20The=20PSK=20modulation=20makes=20a=20= weak=20signal completely=20invisible=20-=20there=20is=20nothing=20to=20sync= hronize=20to,=20and=20if=20you=20haven't=20successfully=20decoded=20the mes= sage=20there=20is=20no=20way=20of=20even=20telling=20whether=20the=20signal = ;was=20there=20at=20all. If one doesn't=20know=20a=20priori=20whe= n=20propagation=20is=20open,=20one=20might=20waste=20a=20lot=20of=20energy=20and= =20time, which=20would=20have=20been=20better=20invested=20in=20a=20simple=20= carrier=20detection=20or=20a=20few=20visual=20DFCW=20dashes.=20I=20think=20that'= s the=20main reason=20why=20Stefan=20has=20yet=20been=20reluctant=20re= garding PSK.
=0D=0A=20=20=0D=0A
 
=0D=0A=20=20=0D=0ABest=2073,=0D=0A=20=20=0D=0A
Markus
=0D=0A=20=20=0D=0A

=0D= =0A=20 
=0D=0A=20-----Urspr=C3=BCngliche=20Mitteilung-----=20
=0D=0A= =20Von:=20edgar=20<= edgarjtwining@virginbroadband.com.au>
=0D=0A=20An:=20rsgb_lf_group=20&= lt;rsgb_lf_group@blacksheep.or= g>
=0D=0A=20Verschickt:=20Sa,=2024=20Okt=202015=204:02=20am
=0D=0A=20= Betreff:=20Re:=20LF:=20Coherent=20BPSK=20on=20LF=20using=20EbNaut
=0D=0A=20=0D=0A=20=20=20=0D=0A=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=0D=0A=20=20=20= =20=20Hi=20Markus,
=0D=0A=20=20=20=20=20=20=20=20
=0D= =0A=20=20=20=20=20=20=20=20Is=20it=20feasible=20to=20try=20receiving=20Coherent=20= BPSK=20at=20Moonah?
=0D=0A=20=20=20=20=20=20=20=20
=0D=0A=20=20=20=20=20=20= =20=20Regards,=20Edgar
=0D=0A=20=20=20=20=20=20=20=20Moonah,=20Tasmania.
=0D= =0A=20=20=20=20=20=20=20=20=20=0D=0A=20=20=20=20=0D=0A=20=20=20= =0D=0A=20 ----------MB_8D2DC4DC9142EE1_9B84_2C8324_webmail-vm004.sysops.aol.com--