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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: Dave ROS is MFSK and requires audio to rf translation , there is support for SDR's , these are listed in the software , modulation is phase continuous , suitable for class e/d ..no stability requirements as system has afc ..if there is 'no' rx audio , the CQ beacon timer will not countdown as it monitors the channel for activity to prevent collisions , needs 3 minutes of silence before transmitting. [...] 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 [80.12.242.68 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: df2e2c1e83972f6e42eeb17d78e70347 Subject: Re: LF: 472kHz help Content-Type: multipart/alternative; boundary="----=_NextPart_000_006E_01CF315B.050592B0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,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 This is a multi-part message in MIME format. ------=_NextPart_000_006E_01CF315B.050592B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dave ROS is MFSK and requires audio to rf translation , there is = support for SDR's , these are listed in the software , = modulation is phase continuous , suitable for class e/d ..no = stability requirements as system has afc ..if there is 'no' rx = audio , the CQ beacon timer will not countdown as it monitors = the channel for activity to prevent collisions , needs 3 minutes = of silence before transmitting. The full Opera system requires audio to rf translation as the = carrier is placed in the lowest s/n slot at each rx/tx = changeover , the provision of a com-port CW drive allows access = via 'cw only' systems ..... PIC stand alone TX only beacons = may also be used=20 ROS / Opera are free running , with no time lock or high = stability requirements =20 73-G,=20 You will find the Ros and Opera 'dial set usb' qrg's listed = in the software and cat linked to the tx/rx if applicable=20 ROS MF , 467.000 USB and 136.000 USB=20 ROS-MF 2/7 share the same audio frequency of 1500 Hz centre = tone , modulation is +/- 50 Hz [ may be 49 to fit the as was = 100 Hz b/w limit ] software can auto detect 2 / 7 =20 [ NB , ROS-MF supports only 1 qso per 100 Hz channel , ROS-HF = supports multiple access to 1 channel ] Opera Dial set 136.000 USB and 477.000 USB =20 B/W approx 2 Hz =20 Decoder pass bands =20 477KHz OP4 RF =3D 478.6<>478.8 KHz=20 477KHz OP8 RF =3D 478.5 <> 478.6 KHz=20 136 Op32 =3D 137.500 <> 137.600 KHz 136 OP8 137.6 <> 137.7 KHz=20 Down load from :- http://rosmodem.wordpress.com/ Support groups etc=20 https://groups.yahoo.com/neo/groups/O_P_E_R_A_/info https://www.facebook.com/groups/operadatamode/ https://groups.yahoo.com/neo/groups/RosMode/info https://www.facebook.com/groups/107108699350439/ From: DAVE PICK=20 Sent: Monday, February 24, 2014 11:45 AM To: rsgb_lf_group@yahoogroups.co.uk ; rsgb_lf_group@blacksheep.org=20 Subject: LF: 472kHz help Dear all I'd like to try, JT9, WSQ, ROS, Opera etc but I can't seem to find a = definitive list of dial frequencies / actual frequencies for all the = modes in use. Has anyone put such a list together? If not I'll assemble one from information received. Thanks Dave G3YXM ------=_NextPart_000_006E_01CF315B.050592B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Dave
 
ROS is  MFSK  and  requires   audio  = to =20 rf   translation  , there  is support  = for =20 SDR's  , these  are  listed  in the  = software  ,=20 modulation  is  phase  continuous , suitable  = for =20 class e/d   ..no  stability  requirements  = as =20 system has  afc ..if there  is  'no'   rx  = audio  , the  CQ beacon  timer  will  not  = countdown  as  it  monitors  the  channel  = for  activity  to  prevent  collisions  , needs  3 minutes of = silence=20 before transmitting.
 
The  full  Opera   system  = requires  =20 audio to  rf  translation  as  the  = carrier =20 is  placed  in the  lowest  s/n   = slot =20 at  each   rx/tx  changeover   , = the =20 provision  of  a com-port   CW  = drive  allows=20 access  via  'cw  only'   systems .....=20 PIC   stand  alone  TX only  beacons  may=20 also  be  used
 
ROS / Opera   are  free  running  ,=20 with  no  time lock  or  high  stability =20 requirements  
 
73-G,
 
 
You will  find  the  Ros    and  = Opera    'dial set usb'   qrg's  = listed  in=20 the  software  and  cat  linked to the  =20 tx/rx  if applicable
 
ROS  MF  ,    467.000  USB  = and =20 136.000 USB
 
ROS-MF   2/7   share the  same  = audio =20 frequency of   1500 Hz   centre  tone  = , =20 modulation  is  +/-  50 Hz   [ may be  49 = to =20 fit the  as was  100 Hz  b/w limit ]
software  can   auto  detect   2 /=20 7   
 
 [ NB  , ROS-MF  supports   only =  1  qso per  100 Hz channel , ROS-HF  supports = multiple=20 access to  1  channel ]
 
Opera   Dial   set    = 136.000 =20 USB   and   477.000  USB 
 
B/W   approx    2 Hz 
 
Decoder pass  bands 
 
477KHz    OP4   RF=20 =3D       478.6<>478.8  = KHz
 
477KHz     OP8    RF=20 =3D     478.5  <> 478.6  KHz =
 
136   Op32     =3D 137.500 = <>=20 137.600    KHz
 
136    OP8    137.6 = <>=20 137.7     KHz
 
Down load  from  :-
 
 
Support groups  etc
 
 
 
https://www.faceb= ook.com/groups/operadatamode/
 
https://groups.= yahoo.com/neo/groups/RosMode/info
 
https://www.fac= ebook.com/groups/107108699350439/
 

From: DAVE PICK
Sent: Monday, February 24, 2014 11:45 AM
To: rsgb_lf_group@yahoogroups= .co.uk=20 ; rsgb_lf_group@blacksheep.org= =20
Subject: LF: 472kHz help

Dear all

I'd like to try, JT9, WSQ, ROS, Opera etc but = I can't=20 seem to find a definitive list of dial frequencies / actual frequencies = for all=20 the modes in use. Has anyone put such a list together?
If not = I'll=20 assemble one from information = received.

Thanks
Dave=20 G3YXM
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