Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-me06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 46C84380000A5; Sun, 1 Jan 2012 19:09:10 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RhVRm-0004R3-Go for rs_out_1@blacksheep.org; Mon, 02 Jan 2012 00:08:14 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RhVRl-0004Qu-Kq for rsgb_lf_group@blacksheep.org; Mon, 02 Jan 2012 00:08:13 +0000 Received: from smtpout3.wanadoo.co.uk ([80.12.242.59] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RhVRj-0003aq-6k for rsgb_lf_group@blacksheep.org; Mon, 02 Jan 2012 00:08:13 +0000 Received: from AGB ([2.26.22.110]) by mwinf5d31 with ME id GQ841i00A2NWfWA03Q854z; Mon, 02 Jan 2012 01:08:05 +0100 Message-ID: <24EF41C85642406DBC109E6B63190CBD@AGB> From: "Graham" To: Date: Mon, 2 Jan 2012 00:08:04 -0000 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 120101-1, 01/01/2012), Outbound message X-Antivirus-Status: Clean X-Spam-Score: 0.2 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RCVD_ILLEGAL_IP=0.234 Subject: LF: OPERA The new CW / QRSS replacement data mode Content-Type: multipart/alternative; boundary="----=_NextPart_000_002E_01CCC8E2.99757E80" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=HTML_70_80,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: 0:2:396037952:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d608e4f00f5a6517a 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_002E_01CCC8E2.99757E80 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable All, =20 After some time in development the 136/500 version of the Opera = data mode is ready for experimental use .=20 =20 Download links are available from myself or Gary, G4WGT as the = versions may change , these may also change ,=20 =20 Users are invited to join the Opera yahoo group = http://groups.yahoo.com/group/O_P_E_R_A_/?yguid=3D131323118 =20 At the moment , spots are distributed to other OP users on line = at the time ,. future intent is to link to the PSK-Reporting = network and for a HF version and possible limited QSO mode , = allowing under the noise qso's with a simple xtal tx=20 =20 There is a on line chat mode to facilitate tests etc=20 =20 The software is available for all , free to use ,=20 =20 Happy new year to all and good luck=20 =20 73-G ..=20 =20 =20 =20 =20 =20 =20 OPERA The new CW/ QRSS replacement data mode=20 =20 There is always the assumption that all armature radio stations = can effectively translate what ever new soundcard data mode = that is coded to radio frequency.. =20 The question I posed was 'What about those who cannot , and only = have CW transmission facility's'? . =20 Never did get a reply =20 So after a long exchange of emails , the concept of a serial = data mode that used only one tone , on/off keyed , with a eye on = the qrss system, was finally discussed and coding work begun, = an initial statement that in software , could be achieved a lower = level of detection than that required to produce a line on a = spectrum plot set the scene for a what was originally proposed to = be a simple data mode, turned into to a race to the noise floor. = =20 =20 =20 OPERA=20 =20 Is a totally new Data / Beacon mode , profiled for the 136 = and 500 bands , with HF possibility's later in the project . = The beacon mode is the version under test at the moment.=20 =20 Opera was designed as an alternative to the QRSS transmission = system and provides for a limited number of characters to be = transmitted by a serial single keyed tone , as is QRSS or = live CW, 6 at the moment. =20 It is live 'data' mode and there is no requirement for time = synchronisation of the tx/rx station . =20 The mode can be transmitted by any transmitter SSB/CW , there = being provided a keyed tone and Comm. Port CW key interface =20 =20 There is a windows 'gui' interface and the requirement for RX = audio feed, based round 1500 Hz , Tx audio at 1500 Hz may also be = used to drive a audio/rf conversion , changes of Tx audio tone = prevent collisions, and the software scans for a slot of minimum = noise . to place the TX carrier in. =20 If the CW key option is used, then the Tx frequency is selected by = the Tx master oscillator only. =20 Once a signal is decoded, the decode-spot is distributed to other = web-connected users, future development will link to the = PSK-Reporting network . =20 =20 OPERA is coded at the moment for 136 and 500 Khz and still = under development. =20 As a basic out line the system (at the moment) codes the six = characters of the call sign and transmits them as a serial = 'pulse' train using either conventional audio to RF translation = , or by the use of a COM port and transistor keying cct that = simply replaces the CW key , =20 Reception, as the data is spread out along a time line , = decoding is completed during the final stages of the transmission , = due to this ,,it is not possible to include a receive progress = monitor, however the system will track and decode multiple = transmissions of both time bases simultaneously=20 =20 =20 Transmit times are used to denote the mode =20 =20 500 Khz =20 =20 2 Minuets =20 16 Minuets =20 136 Khz=20 =20 8 Minuets =20 65 Minuets =20 =20 =20 S/N, The mode is capable of decoding under the noise level , = beyond that of WSPR or the ROS-MF-2 system with a maximum data = loss of 33% before the decode Fails. =20 Opera 2 similar to WSPR Opera 8 6dB better than WSPR. =20 Opera 65 9 dB better than Opera8,=20 =20 =20 =20 ------=_NextPart_000_002E_01CCC8E2.99757E80 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
All,

 

After =20 some  time  in development  the  136/500  = version =20 of the  Opera  data  mode  is  ready =20 for  experimental  use .

 

Download  links  are =20 available  from  myself  or  Gary, G4WGT  as = the =20 versions  may  change  , these  may  also  = change  ,

 

Users  are  invited  = to  join=20 the  Opera  yahoo   group  http= ://groups.yahoo.com/group/O_P_E_R_A_/?yguid=3D131323118<= /SPAN>

 

At the  moment , spots  = are =20 distributed to  other  OP users  on line  at the = time ,.=20 future intent  is to  link   to  the =20 PSK-Reporting  network and  for  a  HF version  = and  possible  limited  QSO  mode , = allowing =20 under  the  noise  qso's  with  a simple =20 xtal  tx

 

There  is a  on line  = chat =20 mode to  facilitate  tests  etc =

 

The  software  is  = available =20 for  all  , free  to  use  , =

 

Happy  new year  to  = all =20 and  good  luck

 

73-G ..

 

 

 

 

 

 

OPERA  The  new  CW/ QRSS =  replacement   data mode=20

 

There  is =20 always the  = assumption=20 that  all   armature  radio  stations  can  effectively   translate  what  ever  new  soundcard  data  mode  that  is =20 coded to  = radio  = frequency..

 

The  question  I posed was  =91What  about  those  who  cannot , and  only  have  CW transmission  facility=92s=92?=20 =85

 

Never did get a=20 reply

 

So =20 after a  long  exchange  of emails , the  concept  of =20 a  serial  data  mode that  used only  one  tone  , on/off  keyed , with a  eye  on the  qrss  system,  was  finally  discussed  and  coding  work  begun, an  initial  statement  that in software , could  be  achieved  a lower  level  of =20 detection  than = that  required to  produce a  line  on a  spectrum  plot set the  scene for  a =20 what  was  originally  proposed to  be a  simple  data  mode, turned into to  a =20 race to the  = noise  floor.   

 

 

OPERA =

 

Is =20 a totally   = new   Data  / Beacon  mode ,  profiled  for the  136  and  500  bands  , with  HF =20 possibility=92s  =20 later  in the  project . The beacon mode is = the version=20 under test at the moment.

 

Opera  was  designed  as an alternative  to the  QRSS  transmission  system and  provides  for a  limited  number of characters to  be =20 transmitted by   = a  serial  single  keyed  tone  , as  is =20 QRSS   or  live  CW, 6 at the  = moment.

 

It is  live  =91data=92 mode and  there  is =20 no  = requirement  for  time  synchronisation  of the  tx/rx  station = .

 

The  mode  can  be =20 transmitted  = by  any  transmitter  SSB/CW , there  being  provided  a =20 keyed tone  = and   Comm.  Port  CW   key interface 

 

There  is =20 a  windows = =91gui=92=20 interface   and  the  requirement for   RX audio  feed,  based  round 1500 Hz , Tx  audio  at 1500 Hz may  also  be =20 used to  drive  a =20 audio/rf conversion , =20 changes  of  Tx =20 audio tone  prevent = collisions, and the  = software=20 scans  for a  slot of minimum noise . = to  place the  TX carrier  = in.

 

If the  CW key option is  used, then the  Tx frequency  is =20 selected  by = the  Tx master oscillator  = only.

 

Once a signal is decoded, = the=20 decode-spot is distributed to other web-connected   users, future = development  will  link to the  PSK-Reporting  network = .

 

 

OPERA  is coded  at the  moment  for  136  and  500 Khz   and =20 still  under =20 development.

 

As =20 a  basic  out  line  the  system (at the  moment) codes  the  six  characters  of the  call  sign  and  transmits  them as a  serial  =91pulse=92  train using  either  conventional  audio  to =20 RF  = translation  , or  by   the  use of  a =20 COM port  and  transistor  keying  cct  that  simply  replaces the CW key=20 ,

 

Reception, as the  data   is  spread  out along  a =20 time  line , = decoding  is completed  during the  final  stages of the  transmission , due to  this  ,,it  is not  possible  to =20 include a  = receive  progress  monitor, however the  system  will  track and  decode  multiple transmissions  of =20 both time  bases=20 simultaneously

 

 

Transmit times are  used to  denote  the  mode  

 

500 Khz 

 

2       =20 Minuets  =20

16     =20 Minuets

 

136 Khz =

 

8        =   Minuets  =20

65       =20 Minuets

 

 

 

S/N, The  = mode  is =20 capable  of  decoding  under the  noise level  , beyond  that  of =20 WSPR  or the  ROS-MF-2   = system=20 with a  maximum  data  loss of  33%  before  the  decode Fails.

 

Opera 2 =     similar to=20 WSPR


Opera = 8     6dB better than=20 WSPR.

 =20

Opera = 65   9 dB better than Opera8,=20

 

 

 

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