Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id x0KCru67030954 for ; Sun, 20 Jan 2019 13:53:57 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1glCRW-0004p3-3P for rs_out_1@blacksheep.org; Sun, 20 Jan 2019 12:43:14 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1glCOB-0004on-9D for rsgb_lf_group@blacksheep.org; Sun, 20 Jan 2019 12:39:47 +0000 Received: from proofpoint-cluster.metrocast.net ([65.175.128.136]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91) (envelope-from ) id 1glCO3-0005Lb-Ve for rsgb_lf_group@blacksheep.org; Sun, 20 Jan 2019 12:39:40 +0000 Received: from [192.168.2.9] (d-69-161-84-15.cpe.metrocast.net [69.161.84.15]) (authenticated bits=0) by grape.metrocast.net (8.14.7/8.14.4) with ESMTP id x0KCdaiJ028713 for ; Sun, 20 Jan 2019 12:39:36 GMT From: Rob Renoud Content-Type: multipart/alternative; boundary=Apple-Mail-4B43391F-C7B0-4AA2-B973-29BC99B17E4E Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) Date: Sun, 20 Jan 2019 07:39:38 -0500 Subject: Re: LF: EbNaut Message-Id: References: <1UTCMpy6DA.3Qa4W73pIAl@optiplex980-pc> <1UTCNvcKZO.AI7JqK0W4Ih@optiplex980-pc> In-Reply-To: <1UTCNvcKZO.AI7JqK0W4Ih@optiplex980-pc> To: rsgb_lf_group@blacksheep.org X-Mailer: iPad Mail (16C50) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.22.28,1.0.8,0.0.0000 definitions=2019-01-20_08:2019-01-16,2019-01-20,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=1 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1810110000 definitions=main-1901200105 X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Riccardo and Jay, Great to see you made the TA connection! No decodes here unfortunately. Rob - K3RWR Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [65.175.128.136 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 64bc660a83b79b15f4c44d2b2147e02d X-SA-Exim-Scanned: No; SA Timed out after 180 secs 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 --Apple-Mail-4B43391F-C7B0-4AA2-B973-29BC99B17E4E Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Riccardo and Jay, Great to see you made the TA connection! No decodes here unfortunately. Rob - K3RWR > On Jan 20, 2019, at 06:26, "jrusgrove@comcast.net" = wrote: >=20 > Riccardo > =20 > Better results last night ... congratulations on 4 decodes! What is you p= ower and antenna? > =20 > 2200 - > 2230 - > 2300 - > 2330 -=20 > 0000 - > 0030 -=20 > 0100 Rank 1 car Eb/N0 1.3 dB Eb/N0 1.1 dB IW4DXW > 0130 - > 0200 Rank 2067 car Eb/N0 0.7 dB Eb/N0 0.1 dB IW4DXW > 0230 - > 0300 - > 0330 Rank 0 car Eb/N0 4.6 dB Eb/N0 4.5 dB IW4DXW > 0400 - > 0430 Rank 284 car Eb/N0 -0.2 dB Eb/N0 -1.2 dB IW4DXW > 0500 - > 0530 - > 0600 - > 0630 - > =20 > Jay W1VD > =20 > ----- Original Message ----- > From: Riccardo Zoli > Reply-To: > To: LF Group > Sent: 1/19/2019 3:50:50 PM > Subject: Re: LF: EbNaut >=20 > Hi Jay and all LF EbNauters, >=20 > Many thanks for your reports and suggestions. > And many thanks Jay for your efforts. Yes, indeed: so I'll try tonite with= a half of symbol duration, pratically the same parameters used in my transm= issions on 14/15 Nov. 2018: >=20 > QRG: 137545 Hz > Coding 8K19A > CRC 16 > 3 sec./sym. > 6 characters > Duration: 28 min. > every 30 minutes, 1st transmission on 2100 UTC, last on 0700 UTC. >=20 > Reports are welcome as usual... >=20 >=20 > All the best >=20 > 73 de Riccardo IW4DXW >=20 >=20 >=20 >=20 >=20 >=20 >=20 >=20 >=20 >=20 >=20 >=20 > Il giorno Sab 19 Gen 2019, 12:36 jrusgrove@comcast.net ha scritto: >> Alex, Riccardo & EbNaut-eers >> =20 >> Unfortunately no copy of either station last night. Alex ... understand y= our TX frequency may have been moving around. >> =20 >> I wonder if a 1 hour transmission is too long for 137 kHz? Recalling spec= trograms of QRSS going back many years seems to indicate a QSB pattern of ap= proximately 15 - 30 minutes. Both receptions of IZ7SLZ and IW4DXW (a while b= ack) were 'one and done' with no hint of the signal in adjacent time slots .= .. using 30 minute transmission times. Even DK7FC's normally big signal show= s big QSB swings from one half hour period to the next. Can't help but wonde= r if 20 or 30 minute transmission periods make better use of the QSB charact= eristics on 136 kHz. >> =20 >> Comments? >> =20 >> Jay W1VD =20 --Apple-Mail-4B43391F-C7B0-4AA2-B973-29BC99B17E4E Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit
Riccardo and Jay,

Great to see you made the TA connection!  No decodes here unfortunately.

Rob - K3RWR

On Jan 20, 2019, at 06:26, "jrusgrove@comcast.net" <jrusgrove@comcast.net> wrote:

Riccardo
 
Better results last night ... congratulations on 4 decodes!  What is you power and antenna?
 
2200 -
2230 -
2300 -
2330 - 
0000 -
0030 - 
0100 Rank 1 car Eb/N0 1.3 dB Eb/N0 1.1 dB IW4DXW
0130 -
0200 Rank 2067 car Eb/N0 0.7 dB Eb/N0 0.1 dB IW4DXW
0230 -
0300 -
0330 Rank 0 car Eb/N0 4.6 dB Eb/N0 4.5 dB IW4DXW
0400 -
0430 Rank 284 car Eb/N0 -0.2 dB Eb/N0 -1.2 dB IW4DXW
0500 -
0530 -
0600 -
0630 -
 
Jay W1VD
 
----- Original Message -----
From: Riccardo Zoli <riccardozoli80@gmail.com>
Sent: 1/19/2019 3:50:50 PM
Subject: Re: LF: EbNaut

Hi Jay and all LF EbNauters,

Many thanks for your reports and suggestions.
And many thanks Jay for your efforts. Yes, indeed: so I'll try tonite with a half of symbol duration, pratically the same parameters used in my transmissions on 14/15 Nov. 2018:

QRG: 137545 Hz
Coding 8K19A
CRC 16
3 sec./sym.
6 characters
Duration: 28 min.
every 30 minutes, 1st transmission on 2100 UTC, last on 0700 UTC.

Reports are welcome as usual...


All the best

73 de Riccardo IW4DXW












Il giorno Sab 19 Gen 2019, 12:36 jrusgrove@comcast.net <jrusgrove@comcast.net> ha scritto:
Alex, Riccardo & EbNaut-eers
 
Unfortunately no copy of either station last night. Alex ... understand your TX frequency may have been moving around.
 
I wonder if a 1 hour transmission is too long for 137 kHz? Recalling spectrograms of QRSS going back many years seems to indicate a QSB pattern of approximately 15 - 30 minutes. Both receptions of IZ7SLZ and IW4DXW (a while back) were 'one and done' with no hint of the signal in adjacent time slots ... using 30 minute transmission times. Even DK7FC's normally big signal shows big QSB swings from one half hour period to the next. Can't help but wonder if 20 or 30 minute transmission periods make better use of the QSB characteristics on 136 kHz.
 
Comments?
 
Jay W1VD      
--Apple-Mail-4B43391F-C7B0-4AA2-B973-29BC99B17E4E--