Return-Path: X-Spam-DCC: paranoid 104; Body=3 Fuz1=3 Fuz2=3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: ** X-Spam-Status: No, score=2.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_MUA_OUTLOOK,HTML_40_50,HTML_MESSAGE,SPF_PASS 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 u22B7qW8014381 for ; Wed, 2 Mar 2016 12:07:52 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ab4YV-0006xO-St for rs_out_1@blacksheep.org; Wed, 02 Mar 2016 11:02:59 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ab4YV-0006xF-I8 for rsgb_lf_group@blacksheep.org; Wed, 02 Mar 2016 11:02:59 +0000 Received: from rgout0301.bt.lon5.cpcloud.co.uk ([65.20.0.207]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1ab4YT-0003gV-N7 for rsgb_lf_group@blacksheep.org; Wed, 02 Mar 2016 11:02:58 +0000 X-OWM-Source-IP: 81.152.76.240 (GB) X-OWM-Env-Sender: alan.melia@btinternet.com X-CTCH-RefID: str=0001.0A090202.56D6C860.005B,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 X-Junkmail-Premium-Raw: score=39/50,refid=2.7.2:2016.2.29.32415:17:39.532,ip=81.152.76.240,rules=__HAS_MSGID, __SANE_MSGID, MSGID_32HEX_LC, INVALID_MSGID_NO_FQDN, __MSGID_32HEX, __HAS_FROM, __PHISH_FROM2, __FRAUD_WEBMAIL_FROM, __TO_MALFORMED_2, __TO_NO_NAME, __REFERENCES, __BOUNCE_CHALLENGE_SUBJ, __BOUNCE_NDR_SUBJ_EXEMPT, __SUBJ_ALPHA_END, __MIME_VERSION, __CT, __CTYPE_MULTIPART_ALT, __CTYPE_HAS_BOUNDARY, __CTYPE_MULTIPART, __HAS_X_PRIORITY, __HAS_MSMAIL_PRI, __HAS_X_MAILER, USER_AGENT_OE, __OUTLOOK_MUA_1, __USER_AGENT_MS_GENERIC, __ANY_URI, __FRAUD_BODY_WEBMAIL, __URI_NO_WWW, __CP_MEDIA_BODY, ECARD_WORD, __SUBJ_ALPHA_NEGATE, SUPERLONG_LINE, __HTML_AHREF_TAG, __HAS_HTML, HTML_NO_HTTP, BODYTEXTP_SIZE_3000_LESS, BODYTEXTH_SIZE_3000_MORE, BODY_SIZE_6000_6999, BODYTEXTH_SIZE_10000_LESS, __MIME_HTML, __TAG_EXISTS_HTML, RDNS_GENERIC_POOLED, __URI_NS, SXL_IP_DYNAMIC[240.76.152.81.fur], RDNS_SUSP_GENERIC, __PHISH_FROM, __OUTLOOK_MUA, RDNS_SUSP, __FRAUD_WEBMAIL, FORGED_MUA_OUTLOOK, REFERENCES, BODY_SIZE_7000_LESS, NO_URI_HTTPS X-CTCH-Spam: Unknown Received: from gnat (81.152.76.240) by rgout03.bt.lon5.cpcloud.co.uk (8.6.122.06) (authenticated as alan.melia@btinternet.com) id 56D09A2C007E0B34 for rsgb_lf_group@blacksheep.org; Wed, 2 Mar 2016 11:02:56 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=btinternet.com; s=btcpcloud; t=1456916577; bh=TEHkqbsoiJkQGUHIHGgV1tBd8qKZJsje8WFV4ER3/LY=; h=Message-ID:From:To:References:Subject:Date:MIME-Version:X-Mailer; b=MYVEVUKn07cewL6Slq71QUceHUeqD8O0NBOx2HJFXkEjOIKBmGY74ujkbIJWmorMX3WFKxbUyk9NmZFznONVBWvjEbv7H6iEQ6/oNOLJ4JT1cIcks5m5MHs748Iwy3WCzE1v8o/xRRFPNCDymBtncwktjUdSwOMtJQLwRjmDDvk= Message-ID: <2BA8BCBD4ED749BA8F495E07214840BC@gnat> From: "Alan Melia" To: References: Date: Wed, 2 Mar 2016 11:02:47 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-Scan-Signature: f45514038df04b1035abb1d5446da941 Subject: LF: Re: Old "Coherent" mode Content-Type: multipart/alternative; boundary="----=_NextPart_000_0010_01D17473.0E43CB00" 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 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 7162 This is a multi-part message in MIME format. ------=_NextPart_000_0010_01D17473.0E43CB00 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Hi Andy Bill moved west but did appear on one of the groups a few months = back I think. I seem to remember Toronto being mentioned. The progress was COHERENT>> AFRICA >> AFRICAM. I think, Wolf appeared = later from a different source as a sound card application. (somewhere I = have a print of the original web posting for it) All Bill's software was = operated via his sigma-delta ADC with RS-232 comms to the PC.......I = have a nice boxed one here acquired from Dave Bowman. One other system that was quite popular was Jason from Alberto, as a = keyboard QSO data mode. Alan G3NYK =20 ----- Original Message -----=20 From: Andy Talbot=20 To: rsgb_lf_group@blacksheep.org ; rsgb_lf_group@yahoogroups.co.uk=20 Sent: Wednesday, March 02, 2016 7:59 AM Subject: LF: Old "Coherent" mode Back in the last millennium, on 73kHz I remember using a BPSK mode = called "Coherent" by VE1IQ. I do remember generating raw unfiltered = BPSK and casually 'ignoring' its sidebands, and also that the abrupt = phase transition led to audible clicks from my antenna loading coil Purely out of interest (and because I thought I'd include it in a talk = on LF operation I'm giving in a couple of weeks) I searched for any = details on t'web. VE2IQ's page still seems to exist, but all = references date back to that era - I didn't try downloading the = software. In those pre-soundcard days we had to use hardware audio digitisers on = receive, and I remember doing a PIC based one to replace the board of = TTL logic otherwise needed. Still have a PCB on a shelf here labelled = "VE2IQ Interface"; it's just an A/D converter and serial interface to a = PC, with 8 bit sampling at 7200Hz. Did Coherent morph into Wolf? As they both use the same modulation / = baud rate it seems more than coincidence... Andy G4JNT ------=_NextPart_000_0010_01D17473.0E43CB00 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable =EF=BB=BF
Hi Andy Bill moved west but did appear = on one of=20 the groups a few months back I think. I seem to remember Toronto being=20 mentioned.
 
The progress was COHERENT>> = AFRICA >>=20 AFRICAM. I think, Wolf appeared later from a different source as a sound = card=20 application. (somewhere I have a print of the original web posting for = it) All=20 Bill's software was operated via his sigma-delta ADC with RS-232 comms = to the=20 PC.......I have a nice boxed one here acquired from Dave = Bowman.
 
One other system that was quite popular = was Jason=20 from Alberto, as a keyboard QSO data mode.
 
Alan
G3NYK
 
----- Original Message -----
From:=20 Andy=20 Talbot
Sent: Wednesday, March 02, 2016 = 7:59=20 AM
Subject: LF: Old "Coherent" = mode

Back in the last millennium, on 73kHz I remember using a BPSK = mode called=20 "Coherent"  by VE1IQ.   I do remember = generating raw=20 unfiltered BPSK and casually  'ignoring' its sidebands, and also = that the=20 abrupt phase transition led to audible clicks from my antenna loading=20 coil

Purely out of interest (and because I thought I'd include it in a = talk on=20 LF operation I'm giving in a couple of weeks) I searched for any = details=20 on t'web.   VE2IQ's page still seems to exist, but all = references=20 date back to that era - I didn't try downloading the software.

In those pre-soundcard days we had to use hardware audio = digitisers on=20 receive, and I remember doing a PIC based one to replace the = board of TTL=20 logic otherwise needed.   Still have a PCB on a shelf here = labelled=20 "VE2IQ Interface";  it's just an A/D converter and serial = interface to a=20 PC, with 8 bit sampling at 7200Hz.

Did Coherent morph into Wolf?  As  they both = use the=20 same modulation / baud rate it seems more than coincidence...

Andy  G4JNT
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