Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mk01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 12420380000BC; Tue, 10 Jul 2012 12:05:49 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Socvq-0002ze-EC for rs_out_1@blacksheep.org; Tue, 10 Jul 2012 17:04:58 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Socvp-0002zV-T9 for rsgb_lf_group@blacksheep.org; Tue, 10 Jul 2012 17:04:57 +0100 Received: from smtpout3.wanadoo.co.uk ([80.12.242.59] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1Socvn-00070c-UX for rsgb_lf_group@blacksheep.org; Tue, 10 Jul 2012 17:04:56 +0100 Received: from AGB ([2.26.28.231]) by mwinf5d45 with ME id Yg4u1j0034zApc203g4uEg; Tue, 10 Jul 2012 18:04:54 +0200 Message-ID: From: "Graham" To: References: <4FFA2783.9080906@kpnmail.nl> <1341854812.85253.YahooMailNeo@web171604.mail.ir2.yahoo.com> <1341915060.76392.YahooMailNeo@web171605.mail.ir2.yahoo.com> <1341923384.41558.YahooMailNeo@web171602.mail.ir2.yahoo.com> <4FFC2C4E.5090306@iup.uni-heidelberg.de> <4FFC3518.1030405@xs4all.nl> <1341931104.51212.YahooMailNeo@web171601.mail.ir2.yahoo.com> <4FFC49A5.1060304@iup.uni-heidelberg.de> In-Reply-To: <4FFC49A5.1060304@iup.uni-heidelberg.de> Date: Tue, 10 Jul 2012 17:04:54 +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-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: Stefan, Note the cpu loading , in TX is very low , its preferable to have the pc linked to the web, to enable decodes to be received and to alert other users of your TX beacons and local decodes if Rx is also used .. [...] 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 [80.12.242.59 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: f9bb43a66658129469273581af35b296 Subject: Re: LF: OPERA Question Content-Type: multipart/alternative; boundary="----=_NextPart_000_003B_01CD5EBE.2038C140" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,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: 0:2:423124256:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d61854ffc52dd58f6 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_003B_01CD5EBE.2038C140 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Stefan, Note the cpu loading , in TX is very low , its preferable to have = the pc linked to the web, to enable decodes to be received = and to alert other users of your TX beacons and local decodes = if Rx is also used .. Care needs to be taken to ensure timing accuracy if external = devices are used. This timing is simply the clock frequency , the system has = -no- real time locking requirements and is totally free = running =20 73 -G. From: Stefan Sch=E4fer=20 Sent: Tuesday, July 10, 2012 4:26 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: OPERA Question Hi Pete,=20 The recording is a good idea. I did it the same way with WOLF10. This = certainly consumes the lowest CPU power... 73, Stefan/DK7FC Am 10.07.2012 16:38, schrieb M0FMT:=20 Hi all I think Stefan is going to direct key the TX ON/OFF from the Serial = Port or he is doing it from a PIC type keyer (like me) or he has just = recorded the output from the PC SC onto an MP3 player and using the = ON/OFF tone on a continuous loop to key a relay transistor via a sound = detector cct thence to key the TX. All options are possible this is the = good bit about this type of weak signal communication. The RX window is 1.6 / 1.8kc/s from the TX carrier on an SSB TX (Upper = Side Band) but when using a CW rig the carrier has to be with in the = window on the EU 600m band it is currently 478.6 / 478.8kc/s on the UK = 600m band it is currently 501.6 / 501.8kc/s. So long as the RX is set such that it hears a tone 1.6 to 1.7kc/s and = that it is connected to the PC Sound Card input at the right level then = it will decode. So if you use a Direct Convertion RX it doesn't matter = which way you approach the signal either upper or lower side band. 73 es GL Pete M0FMT IO91UX From: Albert To: rsgb_lf_group@blacksheep.org=20 Sent: Tuesday, 10 July 2012, 14:58 Subject: Re: LF: OPERA Question Stefan, Download the Opera program. In the waterfall you will see two red = lines, put the cursor on the lines and read the frequency (upper left = window of the waterfall display) Op4 differs from Op8 etc a frequency = within this band is the input of the USB TX so 477kHz + (a frequency = between the red lines). When using CAT control Opera will choose a not = occupied freq. in the appropriate pass band. 73, Albert ------=_NextPart_000_003B_01CD5EBE.2038C140 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Stefan,
 
Note the  cpu loading  , in TX  is very  = low =20 ,  its preferable to  have  the  pc   = linked=20 to  the  web, to   enable   decodes = to =20 be  received  and  to  alert  other  = users =20 of  your  TX   beacons  and local  = decodes =20 if  Rx  is also  used ..
 
Care needs  to  be  taken to  ensure  = timing =20 accuracy  if  external  devices  are  = used.
 
This  timing  is  simply  the  = clock  =20 frequency  , the  system  has  -no-   = real =20 time  locking   requirements  and  is = totally =20 free  running 
 
73 -G.

From: Stefan = Sch=E4fer
Sent: Tuesday, July 10, 2012 4:26 PM
Subject: Re: LF: OPERA Question

Hi Pete,

The recording is a good idea. I did it = the same=20 way with WOLF10. This certainly consumes the lowest CPU = power...

73,=20 Stefan/DK7FC

Am 10.07.2012 16:38, schrieb M0FMT:=20
Hi all
 
I think Stefan is going to direct key the TX ON/OFF from = the Serial=20 Port or he is doing it from a PIC type keyer (like me) or he has = just=20 recorded the output from the PC SC onto an MP3 player and using the = ON/OFF=20 tone on a continuous loop to key a relay transistor via a = sound=20 detector cct thence to key the TX. All options are possible this is = the good=20 bit about this type of weak signal communication.
 
The RX window is 1.6 / 1.8kc/s from the TX carrier on an = SSB TX=20 (Upper Side Band) but when using a CW rig the carrier has to be with = in the=20 window on the EU 600m band it is currently 478.6 / 478.8kc/s on the = UK =20 600m band it is currently 501.6 / 501.8kc/s.
 
So long as the RX is set such that it hears a tone 1.6 to = 1.7kc/s=20 and that it is connected to the PC Sound Card input at the right level = then it=20 will decode. So if you use a Direct = Convertion  RX it=20 doesn't matter which way you approach the signal either upper or lower = side=20 band.
73 es GL Pete M0FMT IO91UX
From: Albert <westberg@xs4all.nl>
<= SPAN=20 style=3D"FONT-WEIGHT: bold">To: rsgb_lf_group@blacksheep.org= =20
Sent: Tuesday, = 10 July=20 2012, 14:58
Subject: Re:=20 LF: OPERA Question

Stefan,

Download the = Opera=20 program. In the waterfall you will see two red lines, put the cursor = on the=20 lines and read the frequency (upper left window of the waterfall=20 display)  Op4 differs from Op8 etc a frequency within this band = is the=20 input of the USB TX so 477kHz + (a frequency between the red lines). = When=20 using CAT control Opera will choose a not occupied freq. in the = appropriate=20 pass band.

73,=20 = Albert




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