Return-Path: X-Spam-DCC: paranoid 1169; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_50_60,HTML_MESSAGE autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t0OB3VWj006897 for ; Sat, 24 Jan 2015 12:03:31 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1YEyOR-0006a3-73 for rs_out_1@blacksheep.org; Sat, 24 Jan 2015 10:56:43 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1YEyOQ-0006Zu-9F for rsgb_lf_group@blacksheep.org; Sat, 24 Jan 2015 10:56:42 +0000 Received: from omr-m05.mx.aol.com ([64.12.143.79]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.85) (envelope-from ) id 1YEyOO-0004F1-1c for rsgb_lf_group@blacksheep.org; Sat, 24 Jan 2015 10:56:41 +0000 Received: from mtaout-maa02.mx.aol.com (mtaout-maa02.mx.aol.com [172.26.222.142]) by omr-m05.mx.aol.com (Outbound Mail Relay) with ESMTP id 2D5E07000009F for ; Sat, 24 Jan 2015 05:56:38 -0500 (EST) Received: from White (ipb21bee4a.dynamic.kabel-deutschland.de [178.27.238.74]) by mtaout-maa02.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 596EE3800008E for ; Sat, 24 Jan 2015 05:56:35 -0500 (EST) Message-ID: From: "Markus Vester" To: References: <7E7DFBB4D102A04DB5ADC88D66628A4A234BBD30@ICTS-S-MBX1.luna.kuleuven.be> Date: Sat, 24 Jan 2015 11:56:33 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20140625; t=1422096998; bh=hARkFN3jOuDVCvnVHmzMrluQCgmZG6M6WLhAD8ksIjo=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=rwy8TC008Yx19obzRBPDONhmhmN0PYroneWscyYQWPzviXsj6j2pVkiWMQPmhFiOf NOmkrQUxMnB6ksv7eSmjxIIJjlM9VbepCs/CMVQsxxeTL5hg1CZth+tGeHT1R6wegQ ZIKGJ+TtmIrtnxoamDH+q/7Eh+Y8LJOMz+DYapSY= x-aol-sid: 3039ac1ade8e54c37a632892 X-AOL-IP: 178.27.238.74 X-Scan-Signature: 14522a7d8bfffcae5e92e35059f18ae1 Subject: Re: LF: RE: comparison OP8 477KHZ opds(DF6NM)--OPERA 1.5.6 LAST NIGHT Content-Type: multipart/alternative; boundary="----=_NextPart_000_0012_01D037CC.CC9DBCD0" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 2115 Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_0012_01D037CC.CC9DBCD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Dionysios for sharing your results. Well done picking up VO1NA = again in Greece! Have a look at the bandwidth indication, which (besides possible drift) = basically tells us whether a station is transmitting coherently with = continuous phase. Specifically, VO1NA, G0NBD and G8HUH seem to be doing = so. My impression is that the detectivity of Opera Dynamic and opds are = pretty much on par for incoherent (random-phase) signals, but opds = seems to have an edge for coherent and stable ones. This is presumbly a = benefit from opds's synchroneous demodulation, which (according to my = measurements) can gain another 3 dB for a "perfect" signal. Note that the % output from opds is not related to the correlation = quality but only indicates the temporal overlap of the stepped 35-minute = detection window with the 32.6-minute duration of the detected = transmission. Values less than 100% just indicate partial overlap. The = quality of the detection shows only in the last column, displaying the = dB SNR of the time-domain correlation peak. Detections just above the = 15 dB threshold should be regarded as possible false positives and = checked by other criteria, like operating frequency and time. Despite my sub-optimal MF noise background, I also managed to snatch a = single detection of VO1NA here.=20 2015-01-24 02:38:20 VO1NA 4563km 478477.028Hz 11mHz -37.4dBOp 93% = 16.0dB Sorry about the slightly inaccurate frequency readout, which is due to = the free running Si570 crystal oscillator in the FiFi-SDR receiver. Best 73, Markus (DF6NM) From: Rik Strobbe=20 Sent: Saturday, January 24, 2015 11:06 AM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: RE: comparison OP8 477KHZ opds(DF6NM)--OPERA 1.5.6 LAST = NIGHT Hello Dionysios, thanks for the very interesting comparisation. If the decodes from Costas are removed (at 7km his signal must be S9+++) = it looks like this: sv8rv km07ks Opera-8 477khz correlation (DF6NM) date time call distance frequency bandwidth snr = correlation 2015-01-24 01:15:31 G0NBD 2526km 478500.708Hz 8mHz -40.7dBOp 95% = 16.2dB 2015-01-24 00:46:23 M0PPP 2446km 478513.832Hz 42mHz -42.8dBOp 81% = 16.0dB 2015-01-24 00:25:37 G0NBD 2526km 478500.710Hz 8mHz -39.7dBOp 86% = 16.6dB 2015-01-24 00:11:06 VO1NA 5905km 478477.530Hz 8mHz -40.6dBOp 90% = 15.5dB 2015-01-23 23:37:30 G8HUH 2395km 478455.648Hz 11mHz -40.5dBOp 87% = 16.9dB 2015-01-23 23:07:56 G8HUH 2395km 478455.643Hz 8mHz -41.8dBOp 100% = 17.2dB 2015-01-23 22:42:33 G8HUH 2395km 478455.641Hz 11mHz -39.8dBOp 99% = 15.0dB 2015-01-23 22:01:51 SO5AS 1598km 478496.870Hz 122mHz -35.0dBOp 99% = 19.8dB 2015-01-23 21:36:53 SO5AS 1598km 478496.866Hz 44mHz -36.7dBOp 87% = 15.8dB 2015-01-23 16:39:11 G3KEV 2449km 478507.023Hz 72mHz -38.9dBOp 66% = 15.9dB OPERA 1.5.6 *********** 24/01/2015 *********** =20 23:38 477 G8HUH Op8 Deep Search -36 dB =20 22:43 477 G8HUH Op8 Deep Search -37 dB =20 22:01 477 SO5AS Op8 -29 dB | ---------- ----- ---- = ------------------------------------------------ = ---------------------------------------------| Fade: 6% 17:05 477 G3KEV Op8 Deep Search -36 dB =20 16:15 477 G3KEV Op8 Deep Search -37 dB 73, Rik ON7YD - OR7T ------=_NextPart_000_0012_01D037CC.CC9DBCD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Thanks Dionysios for sharing your = results. Well=20 done picking up VO1NA again in Greece!
 
Have a look at the bandwidth = indication, which=20 (besides possible drift) basically tells us whether a station is=20 transmitting coherently with continuous phase. Specifically, VO1NA, = G0NBD=20 and G8HUH seem to be doing so. My impression is that the = detectivity=20 of Opera Dynamic and opds are pretty much on par for incoherent=20 (random-phase) signals, but  opds seems to have an = edge for=20 coherent and stable ones. This is presumbly a benefit from opds's=20 synchroneous demodulation, which (according to my measurements) can gain = another 3 dB for a "perfect" signal.
 
Note that the % output from = opds is not=20 related to the correlation quality but only indicates the temporal = overlap=20 of the stepped 35-minute detection window with the 32.6-minute duration = of=20 the detected transmission. Values less than 100% just indicate = partial=20 overlap. The quality of the detection shows only in the last=20 column, displaying the dB SNR of the  time-domain correlation = peak.=20 Detections just above the 15 dB threshold should be regarded=20 as possible false positives and checked by other = criteria, like=20 operating frequency and time.
 
Despite my sub-optimal MF noise = background, I also=20 managed to snatch a single detection of VO1NA here.
2015-01-24 02:38:20 VO1NA   = 4563km=20 478477.028Hz  11mHz -37.4dBOp  93% 16.0dB
Sorry about=20 the slightly inaccurate frequency readout, which is due = to the=20 free running Si570 crystal oscillator in the FiFi-SDR = receiver.
 
Best 73,
Markus (DF6NM)
 

Sent: Saturday, January 24, 2015 11:06 AM
Subject: LF: RE: comparison OP8 477KHZ opds(DF6NM)--OPERA = 1.5.6 LAST=20 NIGHT

Hello Dionysios,

 

thanks for the very interesting comparisation.

If the decodes from Costas are removed (at 7km his signal must = be S9+++)=20 it looks like this:

 
sv8rv km07ks = Opera-8 477khz=20 correlation   (DF6NM)
  =20 date      time   call  =20 distance  frequency bandwidth  snr   =20 correlation
2015-01-24 = 01:15:31=20 G0NBD   2526km 478500.708Hz   8mHz -40.7dBOp  = 95%=20 16.2dB
2015-01-24 = 00:46:23=20 M0PPP   2446km 478513.832Hz  42mHz -42.8dBOp  81%=20 16.0dB
2015-01-24 = 00:25:37=20 G0NBD   2526km 478500.710Hz   8mHz -39.7dBOp  = 86%=20 16.6dB
2015-01-24 = 00:11:06=20 VO1NA   5905km 478477.530Hz   8mHz -40.6dBOp  = 90%=20 15.5dB
2015-01-23 = 23:37:30=20 G8HUH   2395km 478455.648Hz  11mHz -40.5dBOp  87%=20 16.9dB
2015-01-23 = 23:07:56=20 G8HUH   2395km 478455.643Hz   8mHz -41.8dBOp 100%=20 17.2dB
2015-01-23 = 22:42:33=20 G8HUH   2395km 478455.641Hz  11mHz -39.8dBOp  99%=20 15.0dB
2015-01-23 = 22:01:51=20 SO5AS   1598km 478496.870Hz 122mHz -35.0dBOp  99%=20 19.8dB
2015-01-23 = 21:36:53=20 SO5AS   1598km 478496.866Hz  44mHz -36.7dBOp  87%=20 15.8dB
2015-01-23 = 16:39:11=20 G3KEV   2449km 478507.023Hz  72mHz -38.9dBOp  66%=20 15.9dB
 
OPERA = 1.5.6
*********** =20 24/01/2015  *********** 
23:38    477=20 G8HUH Op8 Deep Search -36 dB  
22:43    477=20 G8HUH Op8 Deep Search -37 dB  
22:01    477=20 SO5AS Op8 -29 dB   |  ---------- -----  ----=20 ------------------------------------------------=20 ---------------------------------------------| Fade: = 6%
17:05    477=20 G3KEV Op8 Deep Search -36 dB  
16:15    477=20 G3KEV Op8 Deep Search -37 dB
 
 
73, Rik  ON7YD - = OR7T
 
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