Return-Path: Received: from mtain-dc09.r1000.mx.aol.com (mtain-dc09.r1000.mx.aol.com [172.29.64.137]) by air-md05.mail.aol.com (v129.4) with ESMTP id MAILINMD052-8b854bd8a4e7109; Wed, 28 Apr 2010 17:13:11 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dc09.r1000.mx.aol.com (Internet Inbound) with ESMTP id BA6EE380000E3; Wed, 28 Apr 2010 17:13:04 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1O7EY9-00040l-0g for rs_out_1@blacksheep.org; Wed, 28 Apr 2010 22:12:05 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1O7EY8-00040c-F8 for rsgb_lf_group@blacksheep.org; Wed, 28 Apr 2010 22:12:04 +0100 Received: from smtp6.freeserve.com ([193.252.22.191]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1O7EY6-0000K9-LT for rsgb_lf_group@blacksheep.org; Wed, 28 Apr 2010 22:12:04 +0100 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3609.me.freeserve.com (SMTP Server) with ESMTP id D859D1C0008D for ; Wed, 28 Apr 2010 23:11:56 +0200 (CEST) Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3609.me.freeserve.com (SMTP Server) with ESMTP id CB83D1C00090 for ; Wed, 28 Apr 2010 23:11:56 +0200 (CEST) Received: from AGB (unknown [91.109.32.157]) by mwinf3609.me.freeserve.com (SMTP Server) with SMTP id 3D2121C0008D for ; Wed, 28 Apr 2010 23:11:54 +0200 (CEST) X-ME-UUID: 20100428211154250.3D2121C0008D@mwinf3609.me.freeserve.com Message-ID: From: "Graham" To: References: , In-Reply-To: Date: Wed, 28 Apr 2010 22:11:53 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8089.726 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8089.726 X-Antivirus: avast! (VPS 100428-1, 28/04/2010), Outbound message X-Antivirus-Status: Clean X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: ROS 500kHz test beacon Content-Type: multipart/alternative; boundary="----=_NextPart_000_014E_01CAE71F.CF0CDE90" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.0 required=5.0 tests=HTML_30_40, HTML_FONTCOLOR_UNSAFE,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-sid: 3039ac1d40894bd8a4e03329 X-AOL-IP: 193.82.116.20 ------=_NextPart_000_014E_01CAE71F.CF0CDE90 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Rik=20 Just about made a qso hi .. my station not set for 500 sending= with more ref power than fwd hi , partial decode by Gary, howev= er , looks like you need to capture the start sequence to decode= the frame ... the same as the HF modes , apparently it used a sud= o-random code sequence overlaying the data stream , so a simple de= -code by position is not possible .. one of the hf modes also use= s this system ..domino I think ? G ..=20 From: Rik Strobbe=20 Sent: Wednesday, April 28, 2010 9:49 PM To: rsgb_lf_group@blacksheep.org=20 Subject: RE: LF: ROS 500kHz test beacon Hello Gary, I just downloaded and installed ROS. After launching it I first thought it was a flight simulator ;-) I got 2 solid copies at 20:32 and 20:38 (you attempting a QSO with G0N= BD). ROS gives only -29dB (almost on the red area) despite the fact th= at I can see you signal with SpecLab in QRSS1 modus and when to QSB bo= osts up I can even hear it. If I knew the coding it would be easily po= ssible to decode it using the SpecLab screenshot. To have a better idea about how robust ROS is you would need to reduce= your ERP by several dB. 73, Rik OR7T - ON7YD ----------------------------------------------------------------------= ---------- Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blackshee= p.org] namens Gary - G4WGT [g4wgt@tiscali.co.uk] Verzonden: woensdag 28 april 2010 21:38 Aan: LF Group (RSGB) Onderwerp: Re: LF: ROS 500kHz test beacon Hi LF,=20 I failed to state the frequency. 503.600 kHz. Dial 502.050 kHz USB. 1 minute PTT loop. 73 Gary - G4WGT On 28 April 2010 20:03, Gary - G4WGT wrote: Hi LF,=20 I will run ROS data mode again tonight starting now. I will increase transmitter power a little to 5 watts making the ERP= 15mW estimated. I will be in Rx mode also, reports & QSO attempts will be welcome. 73 Gary - G4WGT. ------=_NextPart_000_014E_01CAE71F.CF0CDE90 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Rik
 
Just about  made a  qso&nbs= p; hi  ..=20 my  station  not set for 500  sending  with = more =20 ref power than  fwd hi , partial  decode by  Gary, howe= ver ,=20 looks like you  need  to  capture the  start = sequence=20 to  decode the  frame ... the  same as  the HF mod= es ,=20 apparently it used a  sudo-random code sequence overlaying  = the =20 data  stream , so  a simple de-code by  position is not=  =20 possible  .. one of the  hf modes also  uses this&= nbsp;=20 system ..domino I think ?
 
G ..

Sent: Wednesday, April 28, 2010 9:49 PM
Subject: RE: LF: ROS 500kHz test beacon

Hello Gary,
 
I just downloaded and installed ROS.
After launching it I first thought it was a flight simulator ;-)<= /DIV>
I got 2 solid copies at 20:32 and 20:38 (you attempting a QSO wit= h G0NBD).=20 ROS gives only -29dB (almost on the red area) despite the fact that I= can see=20 you signal with SpecLab in QRSS1 modus and when to QSB boosts up I can= even hear=20 it. If I knew the coding it would be easily possible to decode it usin= g the=20 SpecLab screenshot.
To have a better idea about how robust ROS is you would need= to reduce=20 your ERP by several dB.
 
73, Rik  OR7T - ON7YD
&nb= sp;
Van:=20 owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org= ] namens=20 Gary - G4WGT [g4wgt@tiscali.co.uk]
Verzonden: woensdag 28 ap= ril 2010=20 21:38
Aan: LF Group (RSGB)
Onderwerp: Re: LF: ROS= 500kHz=20 test beacon

Hi LF,=20

I failed to state the frequency.

503.600 kHz.
Dial 502.050 kHz USB.
1 minute PTT loop.

73

Gary - G4WGT


On 28 April 2010 20:03, Gary - G4WGT <g4wgt@tiscali.co.= uk> wrote:
Hi LF,=20

I will run ROS data mode again tonight starting now.

I will increase transmitter power a little to 5 watts making th= e ERP 15mW=20 estimated.

I will be in Rx mode also, reports & QSO attempts will be= =20 welcome.

73

Gary -=20 G4WGT.



------=_NextPart_000_014E_01CAE71F.CF0CDE90--