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Content preview: There is only 'one' Opera ! there is no other single carrier on/off data system Yes , Markus has designed a secondary detector that acts as a pattern recognition system , for best results , the qrg needs to be as stable as possible , wspr uses 4 carriers , so not suitable and conventional qrss has a limited number of transitions [...] 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: 974e9bcd09e4f3403f97af2f38f8fb73 Subject: Re: LF: 74550 XRS in Germany Content-Type: multipart/alternative; boundary="----=_NextPart_000_0171_01CEBD5D.36E6D9F0" 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 Status: O X-Status: X-Keywords: X-UID: 1964 This is a multi-part message in MIME format. ------=_NextPart_000_0171_01CEBD5D.36E6D9F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable There is only 'one' Opera ! there is no other single carrier = on/off data system=20 Yes , Markus has designed a secondary detector that acts as a = pattern recognition system , for best results , the qrg needs to = be as stable as possible , wspr uses 4 carriers , so not = suitable and conventional qrss has a limited number of = transitions=20 Opera sends 256 bits in each tx cycle , which can be detected = earlier than the main decoder , that is extracting the call = from the received data as opposed to pattern matching , 'a = software bombe'=20 Using the long Op coded tx signal , now , gives a 3 way split = , the 65 min tx time produces quite a sizeable block of data to = post-process=20 1... Normal decode with Op software ------round -43 dB =20 2...qrss grabber trace as line on qrg...... ?? 3... correlation detection ....... -50 dB ??=20 With the advantage of 50% duty cycle ..=20 73-G,=20 From: Bob Raide=20 Sent: Sunday, September 29, 2013 9:23 PM To: rsgb_lf_group@blacksheep.org=20 Subject: RE: LF: 74550 XRS in Germany Markus; Hartmut has settled on 74.549 for my freq. I didn't realize it is that = "sticky" ! Do you have special program to help programs like OPERA? Does it help = QRSS and WSPR? =20 -------------------------------------------------------------------------= ------- From: markusvester@aol.com To: rsgb_lf_group@blacksheep.org Date: Sun, 29 Sep 2013 22:00:19 +0200 Subject: LF: 74550 XRS in Germany Hi Hartmut, yes: 100000 - 3426 * 50000 / 6731 =3D 74550.5868 Hz. Since Sylt is = dual-rated, the "Lessay" lines are also radiated by this station. >From the back of your antenna, you might also find 6.25 Hz multiples = from Slonim (GRI 8000), eg. 74550.000 Hz. Best 73, Markus (DF6NM) From: Hartmut Wolff=20 Sent: Sunday, September 29, 2013 7:52 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: 74550 XRS in Germany Am 2013-09-29 19:28, schrieb Markus Vester: > That Loran line is probably one from Sylt (GRI 7499): > 100000 - 3817 * (50000/7499) =3D 74549.940 Hz Markus, thanks for the Loran frequency. I was searching last night a signal for=20 calibrating the rx. I used DCF77 because I didn't remember the Loran=20 formular. Lessay seems to be 0,6Hz above. 73 Hartmut ------=_NextPart_000_0171_01CEBD5D.36E6D9F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
There is only   'one'  = Opera  !=20 there  is  no  other  single  carrier =20 on/off  data  system
 
Yes  , Markus  has  = designed  a =20 secondary detector  that  acts  as  a  = pattern =20 recognition  system , for  best  results  , = the =20 qrg  needs  to  be  as  stable as  = possible =20 , wspr  uses   4 carriers  , so  not=20 suitable  and  conventional  qrss   has a  = limited  number  of  transitions 
 
 Opera  sends  256  = bits  in=20 each  tx  cycle  , which  can be  = detected =20 earlier  than the  main decoder  , that  is =20 extracting  the    call  from the  = received =20 data   as opposed  to  pattern  matching  = ,=20 'a  software  bombe'
 
Using  the  long  Op coded = tx =20 signal  , now ,   gives  a  3  way  = split ,=20 the  65 min tx  time  produces  quite a  = sizeable =20 block of  data  to  post-process
 
1... Normal   decode  with  = Op=20 software ------round  -43 dB 
2...qrss   grabber  trace  = as =20 line  on qrg...... ??
3... correlation detection  .......  = -50 dB ??=20
 
With the  advantage  of 50% duty = cycle  ..=20
 
73-G,
 
 

From: Bob Raide
Sent: Sunday, September 29, 2013 9:23 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: RE: LF: 74550 XRS in Germany

Markus;
Hartmut has settled on 74.549 for my = freq.  I=20 didn't realize it is that "sticky" !
Do you have special program to = help=20 programs like OPERA?  Does it help QRSS and WSPR?
 
From: markusvester@aol.com
To: rsgb_lf_group@blacksheep.org=
Date:=20 Sun, 29 Sep 2013 22:00:19 +0200
Subject: LF: 74550 XRS in = Germany

Hi Hartmut,
 
yes: 100000 - 3426 *=20 50000 / 6731 =3D 74550.5868 Hz. Since Sylt is dual-rated, the = "Lessay"=20 lines are also radiated by this station.
 
From the back of your antenna, you = might also find=20 6.25 Hz multiples from Slonim (GRI 8000), eg. = 74550.000 Hz.
 
Best 73,
Markus (DF6NM)
 
 

Sent: Sunday, September 29, 2013 7:52 PM
Subject: Re: LF: 74550 XRS in Germany

Am 2013-09-29 19:28, schrieb Markus = Vester:
>=20 That Loran line is probably one from Sylt (GRI = 7499):
>   100000=20 - 3817 * (50000/7499) =3D 74549.940 Hz

Markus,

thanks for = the Loran=20 frequency. I was searching last night a signal for
calibrating the = rx. I=20 used DCF77 because I didn't remember the Loran
formular. Lessay = seems to be=20 0,6Hz above.

73
Hartmut


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