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 x0NIG6nZ019214 for ; Wed, 23 Jan 2019 19:16:07 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1gmMzh-0001jR-5W for rs_out_1@blacksheep.org; Wed, 23 Jan 2019 18:11:21 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1gmMzf-0001jI-I0 for rsgb_lf_group@blacksheep.org; Wed, 23 Jan 2019 18:11:19 +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 1gmMzc-0004tP-Ry for rsgb_lf_group@blacksheep.org; Wed, 23 Jan 2019 18:11:18 +0000 Received: from [192.168.2.9] (d-69-161-84-15.cpe.metrocast.net [69.161.84.15]) (authenticated bits=0) by apple.metrocast.net (8.14.7/8.14.4) with ESMTP id x0NIBELa033217 for ; Wed, 23 Jan 2019 18:11:14 GMT From: Rob Renoud Mime-Version: 1.0 (1.0) Date: Wed, 23 Jan 2019 13:11:13 -0500 Message-Id: <69A6645D-1859-4B9B-B0D4-D64E5702DDA1@md.metrocast.net> References: <1541712573053.31739@kuleuven.be> <5C3F2E54.1080204@posteo.de> <5C44B472.9090901@posteo.de> <1UTCP1TTXz.GTBnkuWTAJs@optiplex980-pc> <1UTCP1tymN.HCrj4Hc5Ogz@optiplex980-pc> <8B74554DD9CC447AA7826347ACFA2369@DELL4> <1UTCRCaEyH.MEMhnQf8VB0@optiplex980-pc> <39F4B622-3145-438E-A048-FBABC6A174A1@md.metrocast.net> <5C4869F8.5060703@posteo.de> In-Reply-To: <5C4869F8.5060703@posteo.de> 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=2019-01-23_09:2019-01-23,2019-01-23,1970-01-01 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-1901230134 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: Stefan, Thanks for the information on list length with regard to the selected EbNaut configuration. I was unaware of this previously. Tnx, 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: 8510f05d8a40511a400b4282b102727d Content-Type: multipart/alternative; boundary=Apple-Mail-DC8156B0-652C-4D02-B447-8FADBD3D8DBC Content-Transfer-Encoding: 7bit Subject: Re: LF: EbNaut tonite X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.5 required=5.0 tests=HTML_40_50,HTML_MESSAGE, MAILTO_TO_SPAM_ADDR 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 --Apple-Mail-DC8156B0-652C-4D02-B447-8FADBD3D8DBC Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Stefan, Thanks for the information on list length with regard to the selected EbNaut= configuration. I was unaware of this previously. Tnx, Rob - K3RWR > On Jan 23, 2019, at 08:19, DK7FC wrote: >=20 > Hi Rob, Jay,=20 >=20 > You need to select a lower list length if CRC8 is used together with 8 cha= racters. > See http://abelian.org/ebnaut/calc.php?sndb=3D20&snbws=3D&snmps=3D1776&cod= e=3D8K19&sp=3D3&crc=3D8&nc=3D8&submit=3DCalculate to calculate the optimum l= ist length. It is 280 for a full phase search. If you keep the default 20000= , then a number of false decodes are highly likely. >=20 > 73, Stefan >=20 > Am 23.01.2019 13:31, schrieb Rob Renoud: >>=20 >> Riccardo and Jay, >>=20 >> No decodes here either. Had a number of low Rank false decodes also. Su= spect the low CRC may have allowed the false decodes. I had similar result= s during the previous run. >>=20 >> Suggest a shorter character message with a higher CRC with a similar dura= tion. Also, if possible, suggest transmitting the message on the hour and r= unning an unmodulated carrier during the idle period to enable monitoring wi= th ARGO or a similar app. I have found this very useful tool with EbNaut tr= ansmissions from VO1NA and K3SIW on 2200m and 185.185... kHz (LoFER) respect= ively. >>=20 >> 73, >> Rob - K3RWR >>=20 >> On Jan 23, 2019, at 06:17, "jrusgrove@comcast.net" wrote: >>=20 >>> Riccardo >>> =20 >>> Late start last night (0000z). Unfortunately no decodes. There were nume= rous low Rank false decodes ... not sure what's up with that! >>> =20 >>> Jay W1VD >>> =20 >>> =20 >>> ----- Original Message ----- >>> From: Riccardo Zoli >>> Reply-To: >>> To: LF Group >>> Sent: 1/22/2019 2:48:00 PM >>> Subject: Re: LF: EbNaut tonite >>>=20 >>> Sorry: message repeated every 30 minutes. >>>=20 >>> 73, Riccardo IW4DXW >>>=20 >>> Il giorno Mar 22 Gen 2019, 20:15 Riccardo Zoli ha scritto: >>>>=20 >>>> Jay, Rob, LF >>>>=20 >>>> QRG 137545 Hz >>>> Coding 8K19A >>>> CRC 8 >>>> 3 sec./sym. >>>> 8 characters >>>> duration 29 min. 36 sec. >>>> no time delay >>>> (1st on 1930 UTC, last on 0700 UTC) >>>>=20 >>>> Reports are welcome >>>>=20 >>>>=20 >>>> All the best >>>>=20 >>>> 73 de Riccardo IW4DXW >>>>=20 >>>>=20 >>>>=20 >>>> Il giorno Lun 21 Gen 2019, 23:03 ha scritto: >>>>> Riccardo >>>>> =20 >>>>> Glad to hear you found the problem. Will await your announcement and l= ook for your signal tomorrow night. >>>>> =20 >>>>> Jay W1VD >>>>> ----- Original Message ----- >>>>> From: Riccardo Zoli >>>>> To: LF Group >>>>> Sent: Monday, January 21, 2019 4:13 PM >>>>> Subject: Re: LF: EbNaut tonite >>>>>=20 >>>>>=20 >>>>> Jay, Rob, Markus, Stefan, Joe, LF >>>>>=20 >>>>>=20 >>>>> Jay, thanks again for the decode: congrats for your rx setup. >>>>> And thank you so much for trying, Rob. >>>>>=20 >>>>> Here, the TP2 reference signal (not sufficiently filtered) overshot so= metimes the quadrature divider (x4) causing that phase jumps. The problem is= now fixed. >>>>>=20 >>>>> A new TX EbNaut session is scheduled for starting tomorrow evening. >>>>>=20 >>>>> All the best >>>>>=20 >>>>>=20 >>>>> 73 de Riccardo IW4DXW >>>>>=20 >>>>>=20 >>>>>=20 >>>>>=20 >>>>>=20 >>>>>=20 >>>>>=20 >>>>> Il giorno Lun 21 Gen 2019, 13:20 jrusgrove@comcast.net ha scritto: >>>>>> Riccardo >>>>>> =20 >>>>>> Corrected decode: >>>>>> =20 >>>>>> 0300 Rank 0 car Eb/N0 2.3 Eb/N0 1.4 FBDECODE >>>>>> =20 >>>>>> Jay W1VD >>>>>> =20 >>>>>> =20 >>>>>> =20 >>>>>> ----- Original Message ----- >>>>>> From: >>>>>> Reply-To: >>>>>> To: >>>>>> Sent: 1/21/2019 6:53:39 AM >>>>>> Subject: Re: LF: EbNaut tonite >>>>>> Stefan, Riccardo & EbNaut-eers >>>>>> =20 >>>>>> =20 >>>>>> Stefan ... good copy throughout the night. Riccardo ... unfortunately= only one decode to report. Markus noted a frequency error ... curious if pr= opagation or NE0-M8T? >>>>>> =20 >>>>>> =20 >>>>>> 137545 >>>>>> =20 >>>>>> 2200 Rank 0 car Eb/N0 9.5 Eb/N0 9.2 RADIO GAGA >>>>>> 2300 - >>>>>> 0000 Rank 0 car Eb/N0 9.2 Eb/N0 9.3 RADIO GAGA >>>>>> 0100 Rank 0 car Eb/N0 6.0 Eb/N0 6.0 RADIO GAGA >>>>>> 0200 Rank 0 car Eb/N0 5.3 Eb/N0 5.9 RADIO GAGA >>>>>> 0300 Rank 0 car Eb/N0 6.1 Eb/N0 6.8 RADIO GAGA >>>>>> 0400 Rank 0 car Eb/N0 11.3 Eb/N0 10.4 RADIO GAGA >>>>>> 0500 Rank 0 car Eb/N0 3.7 Eb/N0 4.6 RADIO GAGA >>>>>> 0600 Rank 0 car Eb/N0 10.6 Eb/N0 10.2 RADIO GAGA >>>>>> =20 >>>>>> =20 >>>>>> 137547 >>>>>> =20 >>>>>> 0300 Rank 0 car Eb/N0 10.0 Eb/N0 FBDECODE >>>>>> =20 >>>>>> Jay W1VD >>>>>> =20 >>>>>> =20 >>>>>> =20 >>>>>> =20 >>>>>> =20 >>>>>> =20 >>>>>> ----- Original Message ----- >>>>>> From: DK7FC >>>>>> Reply-To: >>>>>> To: >>>>>> Sent: 1/20/2019 12:48:34 PM >>>>>> Subject: LF: EbNaut tonite >>>>>> LF,=20 >>>>>>=20 >>>>>> Tonite: >>>>>>=20 >>>>>> f =3D 137.545 kHz >>>>>> Start time: 20.JAN.2019 22:00:00.3 UTC (hourly, including 6 UTC) >>>>>> Symbol period: 1 s >>>>>> Characters: 10 >>>>>> CRC bits: 12 >>>>>> Coding 16K21A >>>>>> Antenna current: 4 A >>>>>> Duration: 24:32 [mm:ss] >>>>>>=20 >>>>>>=20 >>>>>> 73, Stefan --Apple-Mail-DC8156B0-652C-4D02-B447-8FADBD3D8DBC Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit
Stefan,

Thanks for the information on list length with regard to the selected EbNaut configuration.  I was unaware of this previously.

Tnx,
Rob - K3RWR

On Jan 23, 2019, at 08:19, DK7FC <selberdenken@posteo.de> wrote:

Hi Rob, Jay,

You need to select a lower list length if CRC8 is used together with 8 characters.
See http://abelian.org/ebnaut/calc.php?sndb=20&snbws=&snmps=1776&code=8K19&sp=3&crc=8&nc=8&submit=Calculate to calculate the optimum list length. It is 280 for a full phase search. If you keep the default 20000, then a number of false decodes are highly likely.

73, Stefan

Am 23.01.2019 13:31, schrieb Rob Renoud:
Riccardo and Jay,

No decodes here either.  Had a number of low Rank false decodes also.  Suspect the low CRC  may have allowed the false decodes.  I had similar results during the previous run.

Suggest a shorter character message with a higher CRC with a similar duration.  Also, if possible,  suggest transmitting the message on the hour and running an unmodulated carrier during the idle period to enable monitoring with ARGO or a similar app.  I have found this very useful tool with EbNaut transmissions from VO1NA and K3SIW on 2200m and 185.185... kHz (LoFER) respectively.

73,
Rob - K3RWR

On Jan 23, 2019, at 06:17, "jrusgrove@comcast.net" <jrusgrove@comcast.net> wrote:

Riccardo
 
Late start last night (0000z). Unfortunately no decodes. There were numerous low Rank false decodes ... not sure what's up with that!
 
Jay W1VD
 
 
----- Original Message -----
From: Riccardo Zoli <riccardozoli80@gmail.com>
Sent: 1/22/2019 2:48:00 PM
Subject: Re: LF: EbNaut tonite

Sorry: message repeated every 30 minutes.

73, Riccardo IW4DXW

Il giorno Mar 22 Gen 2019, 20:15 Riccardo Zoli <riccardozoli80@gmail.com> ha scritto:

Jay, Rob, LF

QRG 137545 Hz
Coding 8K19A
CRC 8
3 sec./sym.
8 characters
duration 29 min. 36 sec.
no time delay
(1st on 1930 UTC, last on 0700 UTC)

Reports are welcome


All the best

73 de Riccardo IW4DXW



Il giorno Lun 21 Gen 2019, 23:03 <jrusgrove@comcast.net> ha scritto:
Riccardo
 
Glad to hear you found the problem. Will await your announcement and look for your signal tomorrow night.
 
Jay W1VD
----- Original Message -----
Sent: Monday, January 21, 2019 4:13 PM
Subject: Re: LF: EbNaut tonite


Jay, Rob, Markus, Stefan, Joe, LF


Jay, thanks again for the decode: congrats for your rx setup.
And thank you so much for trying, Rob.

Here, the TP2 reference signal (not sufficiently filtered) overshot sometimes the quadrature divider (x4) causing that phase jumps. The problem is now fixed.

A new TX EbNaut session is scheduled for starting tomorrow evening.

All the best


73 de Riccardo IW4DXW







Il giorno Lun 21 Gen 2019, 13:20 jrusgrove@comcast.net <jrusgrove@comcast.net> ha scritto:
Riccardo
 
Corrected decode:
 
0300 Rank 0 car Eb/N0 2.3 Eb/N0 1.4 FBDECODE
 
Jay W1VD
 
 
 
----- Original Message -----
Sent: 1/21/2019 6:53:39 AM
Subject: Re: LF: EbNaut tonite
Stefan, Riccardo & EbNaut-eers
 
 
Stefan ... good copy throughout the night. Riccardo ... unfortunately only one decode to report. Markus noted a frequency error ... curious if propagation or NE0-M8T?
 
 
137545
 
2200 Rank 0 car Eb/N0 9.5 Eb/N0 9.2 RADIO GAGA
2300 -
0000 Rank 0 car Eb/N0 9.2 Eb/N0 9.3 RADIO GAGA
0100 Rank 0 car Eb/N0 6.0 Eb/N0 6.0 RADIO GAGA
0200 Rank 0 car Eb/N0 5.3 Eb/N0 5.9 RADIO GAGA
0300 Rank 0 car Eb/N0 6.1 Eb/N0 6.8 RADIO GAGA
0400 Rank 0 car Eb/N0 11.3 Eb/N0 10.4 RADIO GAGA
0500 Rank 0 car Eb/N0 3.7 Eb/N0 4.6 RADIO GAGA
0600 Rank 0 car Eb/N0 10.6 Eb/N0 10.2 RADIO GAGA
 
 
137547
 
0300 Rank 0 car Eb/N0 10.0 Eb/N0  FBDECODE
 
Jay W1VD
 
 
 
 
 
 
----- Original Message -----
Sent: 1/20/2019 12:48:34 PM
Subject: LF: EbNaut tonite
LF,

Tonite:

f = 137.545 kHz
Start time: 20.JAN.2019  22:00:00.3 UTC (hourly, including 6 UTC)
Symbol period: 1 s
Characters: 10
CRC bits: 12
Coding 16K21A
Antenna current: 4 A
Duration: 24:32 [mm:ss]


73, Stefan
--Apple-Mail-DC8156B0-652C-4D02-B447-8FADBD3D8DBC--