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[195.171.43.25]) by mx.google.com with ESMTP id z18si2826511wij.82.2013.12.19.13.22.25 for ; Thu, 19 Dec 2013 13:22:26 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1VtkaA-0003PA-9I for rs_out_1@blacksheep.org; Thu, 19 Dec 2013 20:52:34 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Vtka9-0003P1-Nh for rsgb_lf_group@blacksheep.org; Thu, 19 Dec 2013 20:52:33 +0000 Received: from relay.uni-heidelberg.de ([129.206.100.212]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1Vtka5-0000x6-QF for rsgb_lf_group@blacksheep.org; Thu, 19 Dec 2013 20:52:32 +0000 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id rBJKqSwo010715 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 19 Dec 2013 21:52:28 +0100 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id rBJKqSQX014600 for ; Thu, 19 Dec 2013 21:52:28 +0100 Message-ID: <52B35C87.3080709@iup.uni-heidelberg.de> Date: Thu, 19 Dec 2013 21:52:23 +0100 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <003901cefcb5$550368d0$6401a8c0@JAYDELL> <2BC26D22A52E4757B0594C7206436E9A@AGB> In-Reply-To: <2BC26D22A52E4757B0594C7206436E9A@AGB> X-Spam-Score: -1.2 (-) 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: G.. I'm waiting for the discussion about performance compared to WSPR, average power, peak power, SNR and minimal decode level :-) It is at least 2 weeks ago and wasn't even 10 times this year. You have to hurry :-) [...] Content analysis details: (-1.2 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [129.206.100.212 listed in list.dnswl.org] -0.5 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 4a8faa6952847c1ec651f883b63fc053 Subject: Re: LF: WSPR2 coast-to-coast Content-Type: multipart/alternative; boundary="------------000407070006040503090405" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,HTML_MESSAGE 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: 3318 This is a multi-part message in MIME format. --------------000407070006040503090405 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit G.. I'm waiting for the discussion about performance compared to WSPR, average power, peak power, SNR and minimal decode level :-) It is at least 2 weeks ago and wasn't even 10 times this year. You have to hurry :-) 73, Stefan/DK7FC Am 19.12.2013 21:26, schrieb Graham: > Bob , Well its true that Opera is a averaging mode > But Most if not all now running on 477 are using the full > system , don forget the system has no need of high stability > in the tx or rx being able to tack drift by AFC , so any ham > set / dongle etc is fine for Rx or Tx , the com-port CW drive > is primarily to allow access via CW/QRSS transmitters , that > cannot handle MFSK > Using Rx and the Tx-audio drive , the carrier is placed > in the lowest s/n 'slot' measured in the mS's before the > system state changes to TX , */each Tx of each user is on a > 'new' qrg /* > The OP2 / OP4 modes are round the same level as wspr-2 , > the first TA's using Opera where using OP2 , OP8 is about as > long as the 477 band will stand , > The Op decoder is quite robust and is not de sensitised by strong > in/out band carriers , wspr was designed for HF , where its > very unlikely that ground wave level signals would be > encountered , strong carriers do suppress its performance , Op was > developed on 500/136 K , the shorter modes HF and up > *Thing would be to organise a 'top fuels 477 party over there > and see what happens* > 73,G, > > *From:* Bob Raide > *Sent:* Thursday, December 19, 2013 4:01 PM > *To:* rsgb_lf_group@blacksheep.org > *Subject:* RE: LF: WSPR2 coast-to-coast > > Jay, et all; > I think if the "average Joe" on 500 would go through the trouble of > adding "Deep Search" to any of the OPERA modes, lower power beyond > that required by WSPR would be possible for similar decoding. Another > plus would be not having to limit numbers of transmissions per hour > because of the less likely RX overloading. But the "average Joe" > isn't gonna go through the trouble of adding "DS" to OPERA, I would > assume? Bob > > > From: jrusgrove@comcast.net > > To: rsgb_lf_group@blacksheep.org > > Date: Thu, 19 Dec 2013 07:24:58 -0500 > > Subject: LF: WSPR2 coast-to-coast > > > > G > > > > There were 31 WSPR2 'coast-to-coast' (west coast US and EU > simultaneous receptions) on 475 kHz last > > night from WE2XGR/2 alone ... WE2XGR/2 > K7IUV and WE2XGR/2 > G3XKR. > Apparently WSPR2 wins the > > 'coast-to-coast' competition on 475 kHz ... especially so when one > considers WSPR2 is a two minute > > cycle time and OP's best time is 4 minutes. > > > > And ... this was done with moderate transmit power. > > > > Jay W1VD WD2XNS WE2XGR/2 WG2XRS/2 > > > > --------------000407070006040503090405 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit G..

I'm waiting for the discussion about performance compared to WSPR, average power, peak power,  SNR and minimal decode level :-) It is at least 2 weeks ago and wasn't even 10 times this year. You have to hurry :-)

73, Stefan/DK7FC

Am 19.12.2013 21:26, schrieb Graham:
Bob , Well  its  true  that  Opera  is a averaging  mode  
 
But  Most  if  not  all  now  running  on  477  are  using  the  full  system  , don forget  the  system  has no  need  of  high  stability  in the  tx or  rx  being  able to  tack  drift  by  AFC , so  any  ham set / dongle  etc is  fine  for  Rx or Tx , the  com-port CW  drive  is primarily  to  allow  access via  CW/QRSS   transmitters , that  cannot handle  MFSK 
 
Using   Rx  and  the  Tx-audio  drive , the  carrier  is  placed  in the  lowest  s/n  'slot' measured  in the  mS's  before  the  system  state changes to TX  , each  Tx  of each  user is  on a  'new'   qrg 
 
The   OP2 / OP4  modes  are round  the  same  level  as  wspr-2  , the  first  TA's  using  Opera  where  using  OP2  , OP8 is  about as  long as  the  477  band  will  stand ,
 
The  Op decoder  is quite  robust and is not  de sensitised by  strong  in/out  band carriers , wspr  was designed for  HF , where  its  very  unlikely  that  ground wave  level  signals  would be  encountered , strong  carriers  do  suppress its performance , Op was developed on   500/136 K  , the  shorter modes  HF and up
 
Thing would be  to  organise a  'top fuels    477 party over there  and  see  what  happens   
 
73,G,
 
 

From: Bob Raide
Sent: Thursday, December 19, 2013 4:01 PM
Subject: RE: LF: WSPR2 coast-to-coast

Jay, et all;
I think if the "average Joe" on 500 would go through the trouble of adding "Deep Search" to any of the OPERA modes, lower power beyond that required by WSPR would be possible for similar decoding.  Another plus would be not having to limit numbers of transmissions per hour because of the less likely RX overloading.  But the "average Joe" isn't gonna go through the trouble of adding "DS" to OPERA, I would assume? Bob
 
> From: jrusgrove@comcast.net
> To: rsgb_lf_group@blacksheep.org
> Date: Thu, 19 Dec 2013 07:24:58 -0500
> Subject: LF: WSPR2 coast-to-coast
>
> G
>
> There were 31 WSPR2 'coast-to-coast' (west coast US and EU simultaneous receptions) on 475 kHz last
> night from WE2XGR/2 alone ... WE2XGR/2 > K7IUV and WE2XGR/2 > G3XKR. Apparently WSPR2 wins the
> 'coast-to-coast' competition on 475 kHz ... especially so when one considers WSPR2 is a two minute
> cycle time and OP's best time is 4 minutes.
>
> And ... this was done with moderate transmit power.
>
> Jay W1VD WD2XNS WE2XGR/2 WG2XRS/2
>
>
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