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 w4H08w3C013083 for ; Thu, 17 May 2018 02:08:59 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1fJ6OZ-0003iB-H1 for rs_out_1@blacksheep.org; Thu, 17 May 2018 01:03:47 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1fJ6OY-0003i2-PO for rsgb_lf_group@blacksheep.org; Thu, 17 May 2018 01:03:46 +0100 Received: from mout01.posteo.de ([185.67.36.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1fJ6OW-0001LM-Ql for rsgb_lf_group@blacksheep.org; Thu, 17 May 2018 01:03:45 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout01.posteo.de (Postfix) with ESMTPS id 0173921121 for ; Thu, 17 May 2018 02:03:44 +0200 (CEST) X-DKIM-Result: Domain=posteo.de Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.de; s=2017; t=1526515424; bh=o7zEd5fwfyLgZ5FlzIxSYHEgA1CyK8armHPwVecPNJQ=; h=Date:From:To:Subject:From; b=SCQtpLHHXFfEoG6tmLOtRLrC/9KsYhUjjgq1wV+3Sm6fvPllC0evDpPeD+e22i9uc J2BGeHycoPOjX1U/nMxiHcBVQU+bxAEJxdZsiKGSf0StgGWwGskdih44qaK7idB26t XuKcu/jkdBOy/WKjHMiXwiPe0fxnALn6fF2GHReyqU8pWp7ByuyRUBlJXSBCqlX0LF LU/DxgNuprGcdQSjYGpwNFaIKqyoHdA2nBPC6mjg/WAw8Z5pAUnXyq1UAtYofw7b4j LepKEYq5hu/grwOUoY12lnPxYuf0D/JvBTLGfVh4jzNh58pzYAt8IjBF9Hc+pKAamA lUgU1Z4wAoZRw== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 40mWjq0v5dz9rxH for ; Thu, 17 May 2018 02:03:43 +0200 (CEST) Message-ID: <5AFCC6DE.7060505@posteo.de> Date: Thu, 17 May 2018 02:03:42 +0200 From: DK7FC 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: <5AF5B035.70102@posteo.de> <5AF6C274.8000008@posteo.de> <5AF88187.1070808@posteo.de> In-Reply-To: X-Spam-Score: -2.3 (--) 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: Hi Riccardo, I continued to work out more decodes of the recent 2 character messages. The new results: Date Carrier Eb/N0 [dB] 2 characters 09.May_08:00 -1.3 09.May_16:01 +0.4 decoded 10.May_00:00 -4.9 10.May_08:00 -6.8 10.May_16:00 +0.9 decoded 11.May_00:00 +6.9 decoded 11.May_08:00 +3.0 decoded 11.May_16:00 +4.8 decoded 12.May_00:00 +7.0 decoded 12.May_08:00 +3.0 decoded [...] Content analysis details: (-2.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [185.67.36.65 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: d8ad3e8750ac7e31a7ad46a4d5b694f2 Subject: Re: VLF: EbNaut at 8270.003 Content-Type: multipart/alternative; boundary="------------080207020707090200040902" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.3 required=5.0 tests=HTML_60_70,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY,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 This is a multi-part message in MIME format. --------------080207020707090200040902 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi Riccardo, I continued to work out more decodes of the recent 2 character messages. The new results: Date Carrier Eb/N0 [dB] 2 characters 09.May_08:00 -1.3 09.May_16:01 +0.4 decoded 10.May_00:00 -4.9 10.May_08:00 -6.8 10.May_16:00 +0.9 decoded 11.May_00:00 +6.9 decoded 11.May_08:00 +3.0 decoded 11.May_16:00 +4.8 decoded 12.May_00:00 +7.0 decoded 12.May_08:00 +3.0 decoded And for the 6 character messages i got: Date Carrier Eb/N0 [dB] 6 characters rank 12.May_16:00 -6.9 13.May_00:00 -0.1 decoded 1087 13.May_08:00 - 13.May_16:00 -13.5 14.May_00:00 -16.9 14.May_08:00 -9.2 14.May_17:30 -2.1 15.May_02:00 +0.4 decoded 51 15.May_10:00 -9.0 15.May_18:00 -3.2 Are you continuing to transmit the message at 18 / 02 / 10 UTC? THere is a phase jump at 0 UTC (only in SpecLab?) when TXing on 8270.003 Hz. 8270.0025 or 8270.005 Hz for example would avoid this phase jump. It could be useful to transmit just 2 messages per day, a long one during daylight (4...18 UTC) and a short one at night (19...3 UTC). You never know who's trying to decode you. The shorter messages at night would promise better chances. Just a thought. 73, Stefan Am 16.05.2018 00:31, schrieb Riccardo Zoli: > > Hi VLF. > > > *Completed transmissions*: > > started at [UTC (DD)] > > *1. 1730 (14) > * > *2. 0200 (15)* > *3. 1000 (15)* > 4. 1800 (15) now running > > Reports are welcome :-) > > > All the best > > 73 de Riccardo IW4DXW > > > Il Lun 14 Mag 2018, 19:56 Riccardo Zoli > ha scritto: > > > Hi VLF, > > > I retry with some consecutive transmissions. > Session started at *17:30 UTC*, every *8h*, same parameters. > > * > QRG: 8270.003 Hz* > *6 ch.* > *25 sec./sym* > *coding 16K21A* > *CRC 15* > *duration 7h 53' 20"* > antenna current about 600mA > > > GE all, 73 de Riccardo IW4DXW > > > Il Dom 13 Mag 2018, 20:57 Riccardo Zoli > ha scritto: > > > > Hi, Stefan! Thanks again for trying to decode my vy weeeak > sig. :-) > Unfortunately my TX goes off at 1733 UTC. > Here the WX turned to stormy suddenly: too much wind and rain > to mantain a normal antenna current and the WX forecast does > not bode well :-/ > I hope to come back soon on air.... > > > GE all > > 73 de Riccardo IW4DXW > > > > Il Dom 13 Mag 2018, 20:23 DK7FC > ha scritto: > > RR. Thanks for the transmissions. I'd like playing with > EbNaut daily. > > This night was very noisy with local thunderstorms again. > But with all tricks including Paul's iqnorm2 script, i > decoded the message. Without that, the Eb/N0 is several dB > below the decode limit. Using the -a normalisation feature > i improved the Eb/N0 even more. The final result is: > sr@vlf:~/vlf/iw4dxw$ vtwavex 13.wav | vtcat > -T2018-05-13_00:00,+8h | vtraw -oa | ./iqnorm2 | ebnaut > -dp16K21A -N6 -S25 -r1.1574 -c4 -k15 -PS -f9 -T3 -F-0.097 > -L1500 -v -a25 > skipped 2.592017 seconds to start > initial reference phase 84.4 amplitude 7.287e+00 > found rank 1087 ber 4.0581e-01 Eb/N0 -0.2 M > -1.957628479e+02 ph 96 0,30,30,60 [IW4DXW] > carrier phase: 4.1 deg > carrier Eb/N0: -0.1 dB > carrier Es/N0: -15.29 dB > carrier S/N: 15.26 dB in 35.2 uHz, -29.27 dB in 1Hz, > -63.25 dB in 2.5kHz > elapsed 1502 > > 73, Stefan > > > Am 13.05.2018 18:07, schrieb Riccardo Zoli: >> >> Restarted at 1600 UTC (13 May), 610mA. >> >> >> GE, 73 de Riccardo IW4DXW >> >> Il Dom 13 Mag 2018, 12:26 Riccardo Zoli >> > > ha scritto: >> >> >> Hi VLF. >> >> TX stopped at 0800 UTC. >> More info soon. >> >> Thanks! >> >> >> All the best >> >> 73 de Riccardo IW4DXW >> >> >> >> >> >> >> Il 12 Mag 2018 18:29, "Riccardo Zoli" >> > > ha scritto: >> >> >> Hi VLF, >> >> >> Thanks Stefan and Markus for your detailed reports. >> >> Ok Stefan, I'm agree, we can try: a new message >> started at 1600 UTC, same scheduling for the >> following transmissions. >> >> *QRG: 8270.003 Hz* >> *6 ch.* >> *25 sec./sym* >> *coding 16K21A* >> *CRC 15* >> *duration 7h 53' 20"* >> antenna current about 600mA >> >> GL and thanks again for your patience :-) >> >> >> P.S.: now there are some thunderstorms nearby, I >> hope I won't have to stop the TX :-/ >> >> >> All the best >> >> 73 de Riccardo IW4DXW >> >> >> >> >> >> >> Il Sab 12 Mag 2018, 12:34 DK7FC >> > > ha scritto: >> >> Here is a corrected and continued list of the >> results of your transmissions: >> >> Date Carrier Eb/N0 [dB] >> 09.May_08:00 -1.3 >> 09.May_16:01 -6.1 >> 10.May_00:00 -4.9 >> 10.May_08:00 -6.8 >> 10.May_16:00 +0.9 decoded >> 11.May_00:00 +6.9 decoded >> 11.May_08:00 -2.7 >> 11.May_16:00 +4.8 decoded >> 12.May_00:00 +7.0 decoded >> >> >> 73, Stefan >> >> PS: You could try to transmit your full >> callsign for example. It would work here. A >> higher challenge. >> >> >> >> Am 11.05.2018 17:01, schrieb DK7FC: >>> Hi Riccardo, >>> >>> Now i finally got your message, see >>> attachment. The transmission of tonite 0 UTC >>> was very strong, as i would usually expect. >>> It must have been the QRN. And now since >>> know the message i can look for the S/N or >>> Eb/N0 of each of your transmissions: >>> >>> Date Eb/N0 [dB] >>> 09.May_08:00 -1.3 >>> 09.May_16:01 -6.1 >>> 10.May_00:00 -4.9 >>> 10.May_08:00 -6.8 >>> 10.May_16:00 +0.9 decoded >>> 11.May_00:00 +7.9 decoded >>> >>> >>> 73, Stefan >>> >>> >>> >>> Am 10.05.2018 02:19, schrieb Riccardo Zoli: >>>> * >>>> * >>>> Hi VLF, >>>> >>>> I have only reduced the CRC. >>>> >>>> *Start time: 00:00 UTC (May 10) *every 8 hours. >>>> * >>>> * >>>> *QRG: 8270.003* >>>> *2 chars* >>>> *30 sec/sym.* >>>> *coding 16K21A* >>>> *CRC 27* >>>> *duration: 7h 52'* >>>> antenna current: 580 mA >>>> >>>> Thanks for reports, as usual... >>>> >>>> All the best >>>> >>>> >>>> 73 de Riccardo IW4DXW >>>> >>>> >>>> >>>> >>>> >>>> >> >> Il Sab 12 Mag 2018, 12:34 DK7FC >> > > ha scritto: >> >> Here is a corrected and continued list of the >> results of your transmissions: >> >> Date Carrier Eb/N0 [dB] >> 09.May_08:00 -1.3 >> 09.May_16:01 -6.1 >> 10.May_00:00 -4.9 >> 10.May_08:00 -6.8 >> 10.May_16:00 +0.9 decoded >> 11.May_00:00 +6.9 decoded >> 11.May_08:00 -2.7 >> 11.May_16:00 +4.8 decoded >> 12.May_00:00 +7.0 decoded >> >> >> 73, Stefan >> >> PS: You could try to transmit your full >> callsign for example. It would work here. A >> higher challenge. >> >> >> >> Am 11.05.2018 17:01, schrieb DK7FC: >>> Hi Riccardo, >>> >>> Now i finally got your message, see >>> attachment. The transmission of tonite 0 UTC >>> was very strong, as i would usually expect. >>> It must have been the QRN. And now since >>> know the message i can look for the S/N or >>> Eb/N0 of each of your transmissions: >>> >>> Date Eb/N0 [dB] >>> 09.May_08:00 -1.3 >>> 09.May_16:01 -6.1 >>> 10.May_00:00 -4.9 >>> 10.May_08:00 -6.8 >>> 10.May_16:00 +0.9 decoded >>> 11.May_00:00 +7.9 decoded >>> >>> >>> 73, Stefan >>> >>> >>> >>> Am 10.05.2018 02:19, schrieb Riccardo Zoli: >>>> * >>>> * >>>> Hi VLF, >>>> >>>> I have only reduced the CRC. >>>> >>>> *Start time: 00:00 UTC (May 10) *every 8 hours. >>>> * >>>> * >>>> *QRG: 8270.003* >>>> *2 chars* >>>> *30 sec/sym.* >>>> *coding 16K21A* >>>> *CRC 27* >>>> *duration: 7h 52'* >>>> antenna current: 580 mA >>>> >>>> Thanks for reports, as usual... >>>> >>>> All the best >>>> >>>> >>>> 73 de Riccardo IW4DXW >>>> >>>> >>>> >>>> >>>> >>>> >> --------------080207020707090200040902 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi Riccardo,

I continued to work out more decodes of the recent 2 character messages.
The new results:
Date Carrier Eb/N0 [dB] 2 characters
09.May_08:00 -1.3  
09.May_16:01 +0.4 decoded
10.May_00:00 -4.9  
10.May_08:00 -6.8  
10.May_16:00 +0.9 decoded
11.May_00:00 +6.9 decoded
11.May_08:00 +3.0 decoded
11.May_16:00 +4.8 decoded
12.May_00:00 +7.0 decoded
12.May_08:00 +3.0 decoded

And for the 6 character messages i got:

Date Carrier Eb/N0 [dB] 6 characters rank
12.May_16:00 -6.9    
13.May_00:00 -0.1 decoded 1087
13.May_08:00 -    
13.May_16:00 -13.5    
14.May_00:00 -16.9    
14.May_08:00 -9.2    
14.May_17:30 -2.1    
15.May_02:00 +0.4 decoded 51
15.May_10:00 -9.0    
15.May_18:00 -3.2    

Are you continuing to transmit the message at 18 / 02 / 10 UTC? THere is a phase jump at 0 UTC (only in SpecLab?) when TXing on 8270.003 Hz. 8270.0025 or 8270.005 Hz for example would avoid this phase jump.

It could be useful to transmit just 2 messages per day, a long one during daylight (4...18 UTC) and a short one at night (19...3 UTC). You never know who's trying to decode you. The shorter messages at night would promise better chances. Just a thought.

73, Stefan

 

Am 16.05.2018 00:31, schrieb Riccardo Zoli:

Hi VLF.


Completed transmissions:

started at [UTC (DD)]
        
1.  1730 (14) 
2.  0200 (15)
3.  1000 (15)
4.  1800 (15) now running

Reports are welcome :-)


All the best

73 de Riccardo IW4DXW


Il Lun 14 Mag 2018, 19:56 Riccardo Zoli <riccardozoli80@gmail.com> ha scritto:

Hi VLF,


I retry with some consecutive transmissions.
Session started at 17:30 UTC, every 8h, same parameters.


QRG: 8270.003 Hz
6 ch.
25 sec./sym
coding 16K21A
CRC 15
duration 7h 53' 20"
antenna current about 600mA


GE all, 73 de Riccardo IW4DXW


Il Dom 13 Mag 2018, 20:57 Riccardo Zoli <riccardozoli80@gmail.com> ha scritto:


Hi, Stefan! Thanks again for trying to decode my vy weeeak sig. :-)
Unfortunately my TX goes off at 1733 UTC.
Here the WX turned to stormy suddenly: too much wind and rain to mantain a normal antenna current and the WX forecast does not bode well :-/
I hope to come back soon on air....


GE all

73 de Riccardo IW4DXW



Il Dom 13 Mag 2018, 20:23 DK7FC <selberdenken@posteo.de> ha scritto:
RR. Thanks for the transmissions. I'd like playing with EbNaut daily.

This night was very noisy with local thunderstorms again. But with all tricks including Paul's iqnorm2 script, i decoded the message. Without that, the Eb/N0 is several dB below the decode limit. Using the -a normalisation feature i improved the Eb/N0 even more. The final result is:
sr@vlf:~/vlf/iw4dxw$ vtwavex 13.wav | vtcat -T2018-05-13_00:00,+8h | vtraw -oa | ./iqnorm2 | ebnaut -dp16K21A -N6 -S25 -r1.1574 -c4 -k15 -PS -f9 -T3 -F-0.097 -L1500 -v -a25
skipped 2.592017 seconds to start
initial reference phase 84.4 amplitude 7.287e+00
found rank 1087 ber 4.0581e-01 Eb/N0 -0.2 M -1.957628479e+02 ph 96 0,30,30,60 [IW4DXW]
carrier phase: 4.1 deg
carrier Eb/N0: -0.1 dB
carrier Es/N0: -15.29 dB
carrier S/N: 15.26 dB in 35.2 uHz, -29.27 dB in 1Hz, -63.25 dB in 2.5kHz
elapsed 1502

73, Stefan


Am 13.05.2018 18:07, schrieb Riccardo Zoli:

Restarted at 1600 UTC (13 May), 610mA.


GE, 73 de Riccardo IW4DXW

Il Dom 13 Mag 2018, 12:26 Riccardo Zoli <riccardozoli80@gmail.com> ha scritto:

Hi VLF.

TX stopped at 0800 UTC.
More info soon.

Thanks!


All the best

73 de Riccardo IW4DXW






Il 12 Mag 2018 18:29, "Riccardo Zoli" <riccardozoli80@gmail.com> ha scritto:

Hi VLF,


Thanks Stefan and Markus for your detailed reports.

Ok Stefan, I'm agree, we can try: a new message started at 1600 UTC, same scheduling for the following transmissions.

QRG: 8270.003 Hz
6 ch.
25 sec./sym
coding 16K21A
CRC 15
duration 7h 53' 20"
antenna current about 600mA

GL and thanks again for your patience :-)


P.S.: now there are some thunderstorms nearby, I hope I won't have to stop the TX :-/


All the best

73 de Riccardo IW4DXW






Il Sab 12 Mag 2018, 12:34 DK7FC <selberdenken@posteo.de> ha scritto:
Here is a corrected and continued list of the results of your transmissions:

Date Carrier Eb/N0 [dB]
09.May_08:00 -1.3
09.May_16:01 -6.1
10.May_00:00 -4.9
10.May_08:00 -6.8
10.May_16:00 +0.9 decoded
11.May_00:00 +6.9 decoded
11.May_08:00 -2.7
11.May_16:00 +4.8 decoded
12.May_00:00 +7.0 decoded

73, Stefan

PS: You could try to transmit your full callsign for example. It would work here. A higher challenge.



Am 11.05.2018 17:01, schrieb DK7FC:
Hi Riccardo,

Now i finally got your message, see attachment. The transmission of tonite 0 UTC was very strong, as i would usually expect.
It must have been the QRN. And now since know the message i can look for the S/N or Eb/N0 of each of your transmissions:

Date Eb/N0 [dB]
09.May_08:00 -1.3
09.May_16:01 -6.1
10.May_00:00 -4.9
10.May_08:00 -6.8
10.May_16:00 +0.9 decoded
11.May_00:00 +7.9 decoded

73, Stefan



Am 10.05.2018 02:19, schrieb Riccardo Zoli:

Hi VLF,

I have only reduced the CRC.

Start time: 00:00 UTC (May 10) every 8 hours.

QRG: 8270.003
2 chars
30 sec/sym.
coding 16K21A
CRC 27
duration: 7h 52'
antenna current: 580 mA

Thanks for reports, as usual...

All the best


73 de Riccardo IW4DXW







Il Sab 12 Mag 2018, 12:34 DK7FC <selberdenken@posteo.de> ha scritto:
Here is a corrected and continued list of the results of your transmissions:

Date Carrier Eb/N0 [dB]
09.May_08:00 -1.3
09.May_16:01 -6.1
10.May_00:00 -4.9
10.May_08:00 -6.8
10.May_16:00 +0.9 decoded
11.May_00:00 +6.9 decoded
11.May_08:00 -2.7
11.May_16:00 +4.8 decoded
12.May_00:00 +7.0 decoded

73, Stefan

PS: You could try to transmit your full callsign for example. It would work here. A higher challenge.



Am 11.05.2018 17:01, schrieb DK7FC:
Hi Riccardo,

Now i finally got your message, see attachment. The transmission of tonite 0 UTC was very strong, as i would usually expect.
It must have been the QRN. And now since know the message i can look for the S/N or Eb/N0 of each of your transmissions:

Date Eb/N0 [dB]
09.May_08:00 -1.3
09.May_16:01 -6.1
10.May_00:00 -4.9
10.May_08:00 -6.8
10.May_16:00 +0.9 decoded
11.May_00:00 +7.9 decoded

73, Stefan



Am 10.05.2018 02:19, schrieb Riccardo Zoli:

Hi VLF,

I have only reduced the CRC.

Start time: 00:00 UTC (May 10) every 8 hours.

QRG: 8270.003
2 chars
30 sec/sym.
coding 16K21A
CRC 27
duration: 7h 52'
antenna current: 580 mA

Thanks for reports, as usual...

All the best


73 de Riccardo IW4DXW







--------------080207020707090200040902--