Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-ma06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 4D08D380000B3; Sat, 2 Jun 2012 14:15:41 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SasqZ-0000WV-BK for rs_out_1@blacksheep.org; Sat, 02 Jun 2012 19:14:43 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SasqY-0000WM-NB for rsgb_lf_group@blacksheep.org; Sat, 02 Jun 2012 19:14:42 +0100 Received: from smtpout1.wanadoo.co.uk ([80.12.242.29] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1SasqW-0006h8-Bt for rsgb_lf_group@blacksheep.org; Sat, 02 Jun 2012 19:14:41 +0100 Received: from AGB ([2.26.47.16]) by mwinf5d08 with ME id HWEd1j0090Lx2rm03WEdk0; Sat, 02 Jun 2012 20:14:39 +0200 Message-ID: <98E876DA3EFE457AAAE4A0AFA8604E46@AGB> From: "Graham" To: References: <8BE4322932454ABBAF36917E7F0B7293@uwePC> <02bb01cd3eb1$c4cb1730$1502a8c0@Clemens04> <1338444302.19906.YahooMailNeo@web171605.mail.ir2.yahoo.com> <18D068A53AF74F56BF8AFDCCAB65CC62@AGB> <1338488029.92944.YahooMailNeo@web171606.mail.ir2.yahoo.com> <97F0E98E40814C45B796CFAF1351D46C@AGB> <4FC7CDF7.1090909@iup.uni-heidelberg.de> <4FC7E2FC.3070002@psk31.plus.com> <3DD43F40887A4C08A4F53031CB126B04@AGB> <4FC7E9E1.7090509@psk31.plus.com> <1338636091.1363.YahooMailNeo@web171601.mail.ir2.yahoo.com> <001301cd40b7$180c6230$1502a8c0@Clemens04> <1338640428.47967.YahooMailNeo@web171606.mail.ir2.yahoo.com> <4FCA3B44.2020703@iup.uni-heidelberg.de> In-Reply-To: <4FCA3B44.2020703@iup.uni-heidelberg.de> Date: Sat, 2 Jun 2012 19:14:30 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 X-Antivirus: avast! (VPS 120602-0, 02/06/2012), Outbound message X-Antivirus-Status: Clean X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Graham states... ! As there is no locking to 'actual / time' delays may be introduced in the tx keying chain, But the delay must be symmetrical and not change the pulse width , whilst being of a constant value , to ensure the integrity of the timing of the pulse train , pulse jitter will degrade the s/n performance. % wise the longer time modes , the larger the % error possible , A figure of 0.2% for clock timing was suggested at the start of the project . [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.29 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 719233b489c0727505743c30ad56ff81 Subject: Re: LF: Re: beacon on 501.59kc/s USB RX dial Content-Type: multipart/alternative; boundary="----=_NextPart_000_00E7_01CD40F3.EFEADE70" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.4 required=5.0 tests=HTML_50_60,HTML_FONT_BIG, HTML_MESSAGE,MISSING_OUTLOOK_NAME 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 x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:479030048:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d600e4fca584c77a3 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_00E7_01CD40F3.EFEADE70 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Graham states... ! As there is no locking to 'actual / time' delays may be = introduced in the tx keying chain, But the delay must be symmetrical and not change the pulse width = , whilst being of a constant value , to ensure the integrity of = the timing of the pulse train , pulse jitter will degrade the s/n = performance. % wise the longer time modes , the larger the % error = possible , A figure of 0.2% for clock timing was suggested at the = start of the project . G.. From: Stefan Sch=E4fer=20 Sent: Saturday, June 02, 2012 5:11 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Re: beacon on 501.59kc/s USB RX dial Hi Pete,=20 Maybe its worth to spend a common mode choke or an optocoupler between = PA and PC? You may try just to key the TX with the PC via an = optocoupler. Should be no problem with Opera, as Graham states... 73, Stefan/DK7FC Am 02.06.2012 14:33, schrieb M0FMT:=20 Thanks Paul Graham is right about QRG. My PC keeps crashing so may go back to QRSS3 using my HB PIC keyer = (not affected by RF) on the same QRG. Thanks fer looking. 73 es GL Pete M0FMT IO91UX From: Graham To: rsgb_lf_group@blacksheep.org=20 Sent: Saturday, 2 June 2012, 13:12 Subject: Re: LF: Re: beacon on 501.59kc/s USB RX dial could be 503.275 ? +/- a bit ! G. From: Clemens Paul=20 Sent: Saturday, June 02, 2012 12:58 PM To: rsgb_lf_group@blacksheep.org=20 Cc: rsgb_lf_group@yahoogroups.co.uk=20 Subject: LF: Re: beacon on 501.59kc/s USB RX dial >on 501.59kc/s USB RX dial setting What is the actual tx qrg then? Just for exactly looking if the signal is visible at all. 73 Clemens DL4RAJ ----- Original Message -----=20 From: M0FMT=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Saturday, June 02, 2012 1:21 PM Subject: LF: beacon on 501.59kc/s USB RX dial Hi All Please report my beacon on 501.59kc/s USB RX dial setting. Temporary = QRG. 73 Pete FMT 73 es GL Pete M0FMT IO91UX =20 E-Mail ist virenfrei. Von AVG =FCberpr=FCft - www.avg.de Version: 2012.0.2178 / Virendatenbank: 2425/5038 - Ausgabedatum: = 01.06.2012=20 ------=_NextPart_000_00E7_01CD40F3.EFEADE70 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Graham states... !
 
As  there  is  no  locking  to  = 'actual /=20 time'    delays  may  be introduced in = the =20 tx  keying  chain,
 
But the  delay  must be  symmetrical  and  = not  change the  pulse width , whilst being  of  = a =20 constant  value , to  ensure the  integrity of the =20 timing  of the   pulse train , pulse jitter =20 will  degrade the  s/n  performance. % wise = the =20 longer  time modes  , the  larger the  % error = possible=20 ,  A figure of  0.2%  for  clock timing  = was =20 suggested at the  start of the  project .
 
G..


From: Stefan = Sch=E4fer
Sent: Saturday, June 02, 2012 5:11 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: Re: LF: Re: beacon on 501.59kc/s USB RX=20 dial

Hi Pete,

Maybe its worth to spend a common mode = choke or=20 an optocoupler between PA and PC? You may try just to key the TX with = the PC via=20 an optocoupler. Should be no problem with Opera, as Graham = states...

73,=20 Stefan/DK7FC

Am 02.06.2012 14:33, schrieb M0FMT:=20
Thanks Paul
 
Graham is right about QRG.
 
My PC keeps crashing so may go back to QRSS3 using my HB = PIC keyer=20 (not affected by RF) on the same QRG. Thanks fer = looking.
73 es GL Pete M0FMT IO91UX
From: Graham <g8fzk@g8fzk.fsnet.co.uk>
To: rsgb_lf_group@blacksheep.org= =20
Sent: Saturday, 2 = June 2012,=20 13:12
Subject: Re: = LF: Re:=20 beacon on 501.59kc/s USB RX dial

could be   503.275  ?   +/-   = a=20 bit  !
 
G.

Sent: Saturday, June 02, 2012 12:58 PM
Subject: LF: Re: beacon on 501.59kc/s USB RX=20 dial

>on 501.59kc/s USB RX dial setting
 
What is the actual tx qrg then?
Just for exactly looking if the signal is visible = at=20 all.
 
73
Clemens
DL4RAJ
-----=20 Original Message -----
From:=20 M0FMT
To:=20 rsgb_lf_group@blacksheep.= org=20 Sent:=20 Saturday, June 02, 2012 1:21 PM Subject:=20 LF: beacon on 501.59kc/s USB RX dial

Hi All

Please report my beacon on 501.59kc/s USB = RX dial=20 setting. Temporary QRG.

73 Pete FMT
 
73 es GL Pete M0FMT IO91UX
 =20
E-Mail ist virenfrei.
Von AVG =FCberpr=FCft - = www.avg.de
Version: 2012.0.2178 /=20 Virendatenbank: 2425/5038 - Ausgabedatum: 01.06.2012=20 =


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