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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: Hi Peter, Graham and Markus, when Im really dreaming the Fade becomes zero. Pse see: http://dj8wx-dl.de/opera5.jpg [...] 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 [194.25.41.13 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 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: ecdb4942e7d41c8de071825c69572d07 Subject: Re: Re: VLF: Uwe Opera-4H Content-Type: multipart/alternative; boundary="----B3D41DD33F584686A0D16CAA0CE1E186" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.6 required=5.0 tests=HTML_40_50,HTML_MESSAGE, NO_REAL_NAME,PRIORITY_NO_NAME 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: 3498 ------B3D41DD33F584686A0D16CAA0CE1E186 Content-type: text/plain; charset=Windows-1252 Content-Transfer-Encoding: quoted-printable Hi Peter, Graham and Markus,=20 when Im really dreaming the Fade becomes zero=2E Pse see: =20 http://dj8wx-dl=2Ede/opera5=2Ejpg =20 the TX is still on the air=2E =A0Pse try your best, =20 GL and hny =20 Uwe/dj8wx=20 Von: rsgb_lf_group@blacksheep=2Eorg Gesendet: 31=2E12=2E2013 11:43 An: rsgb_lf_group@blacksheep=2Eorg Betreff: Re: VLF: Uwe Opera-4H Unfortunately no copy from Uwe, here in JO42FD using the broadband VLF = E-field receiver at DF0WD and 0=2E5 mHz FFT bin width=2E=2E Hny and cul, =A0 Wolf=2E Am 31=2E12=2E2013 10:18, schrieb PA1SDB, Peter: Uwe,=20 This message (below)=A0came in my mail box=A0at 08:42 UTC today (31-Dec= -13)=20 73's Peter=2E=2E=20 ----- Original Message ----- =20 From: uwe-jannsen@kabelmail=2Ede =20 To: rsgb_lf_group@blacksheep=2Eorg =20 Sent: Monday, December 30, 2013 2:46 PM=20 Subject: Re: Re: VLF: Uwe Opera-4H=20 HI Peter,=20 I changed the TX QRG to 8912=2E5Hz running SpecLab in Op-4H (ASK0) mode= and made a first test with positive result=2E =20 the RX was located in 3km distance - Opera v=2E1=2E5=2E0 , RX aerial a = 10m wire connected to the soundcard=2E =A0=A0=20 TX output pwr about 1W=2E =A0pse see:=20 http://dj8wx-dl=2Ede/opera3=2Ejpg =20 I think we should have a try as you are my nearest station rxing VLF=2E= =20 Now Im increasing the PA output pwr to 500Wrms=2E =20 GL =20 Uwe/dj8wx =A0=20 Von: rsgb_lf_group@blacksheep=2Eorg Gesendet: 29=2E12=2E2013 09:45 An: rsgb_lf_group@blacksheep=2Eorg Betreff: Re: VLF: Uwe Opera-4H Hello Uwe, Markus, VLF=20 Nothing was seen or detected here from your transmission in=A0OPERA mod= e either=2E=2E=20 No recognizable=A0trace at all=2E=20 While you're=A0continuous unmodulated signal almost overloads my soundc= ard input=2E=20 73's Peter - PA1SDB=20 ----- Original Message ----- =20 From: uwe-jannsen@kabelmail=2Ede =20 To: rsgb_lf_group@blacksheep=2Eorg =20 Sent: Saturday, December 28, 2013 9:08 PM=20 Subject: Re: VLF: Uwe Opera-4H=20 yes Markus, I have had the screen showing the SecLab components in my = focus whilst doing =A0other jobs - for hours=2E=20 Now the carrier only mode is on the air=2E =20 Until next test =20 GL=20 Uwe/dj8wx=20 Von: rsgb_lf_group@blacksheep=2Eorg Gesendet: 28=2E12=2E2013 19:07 An: rsgb_lf_group@blacksheep=2Eorg Betreff: VLF: Uwe Opera-4H Uwe,=20 sorry, nothing was seen or detected here from your transmission today=2E= =A0Not a trace=2E Der erste Versuch ist meist nicht genuch=A0(Didi Drah= tlos)=2E=A0=20 Yes I noticed the good trace on Paul Nicholson's spectrogram http://abe= lian=2Eorg/vlf/fbins=2Eshtml#p=3D1388246400&b=3D080&s=3Dsp=2E Just look= at it the other way round: You did send a long carrier, only with some= short interruptions=2E=A0But the gaps were so short that the spectrum = didn't notice them ;-)=A0=20 More seriously: Compared to a continuous carrier, with 50% duty cycle t= he carrier component is still there but 6 db down (half average voltage= )=2E In terms of power, on average you are spending 50% of the power=2E= =A025%=A0(-6 dB) goes to=A0the central carrier, and the other 25% into = the AM sidebands carrying the message=2E=A0=A0=A0=A0=20 What I find=A0strange is that=A0the spectrogram trace=A0seems to have j= umped=A028 mHz low,=A0once near=A0the beginning and again for an hour a= round 14:30=2E=A0Are you sure that your samplerate correction had=A0bee= n engaged without interruption?=20 Best 73,=20 Markus (DF6NM)=20 From: uwe-jannsen@kabelmail=2Ede =20 Sent: Saturday, December 28, 2013 3:05 PM=20 To: rsgb_lf_group@blacksheep=2Eorg =20 Subject: Re: Re: LF: Sending Opera with SpecLab =20 OK=2E, Markus, but the Todmorden grabber shows the signs=2Eits a surpri= se for me=2E I didnt expect it samples such relative short signs=2E GL Uwe/dj8wx tks for the correction=2E Von: rsgb_lf_group@blacksheep=2Eorg Gesendet: 28=2E12=2E2013 12:47 An: rsgb_lf_group@blacksheep=2Eorg Betreff: Re: LF: Sending Opera with SpecLab Uwe,=20 good=A0news! I'm watching and searching=A0;-)=A0=20 Background noise seems to be a few dB higher than=A0the last couple of = days, but we'll see what's possible anyway=2E Unfortunately the OK2BVG = grabber website appears to be down at the moment=2E=20 Good luck!=20 73, Markus (DF6NM)=20 PS: In my original mail, the Op-8 line=A0in the speed table=A0erroneous= ly contained an=A0entry for Op-4=2E This=A0has been corrected beneath=2E= =A0=A0=20 From: uwe-jannsen@kabelmail=2Ede =20 Sent: Saturday, December 28, 2013 12:14 PM=20 To: rsgb_lf_group@blacksheep=2Eorg =20 Subject: LF: Sending Opera with SpecLab =20 Hi all, the PA has been switched on=2E the next txt block will start now=2E GL Uwe/dj8wx Von: rsgb_lf_group@blacksheep=2Eorg Gesendet: 27=2E12=2E2013 15:47 An: rsgb_lf_group@blacksheep=2Eorg Betreff: Re: Re: LF: Sending Opera with SpecLab Hi Markus, Wolf, Stefan, Peter es all, tks for the advice, Markus =20 now SpecLab is beaconing in mode Op-4H on 8969=2E99Hz the PA is off until it is dry outside=2E =20 I keep your proposal =A0txing btwn 0700 and 1400MEZ in mind, Markus=2E=20 GL =20 Uwe/dj8wx/dj8CAT ------B3D41DD33F584686A0D16CAA0CE1E186 Content-type: text/html; charset=Windows-1252 Content-Transfer-Encoding: quoted-printable

Hi Peter, Graham and Markus,

when Im really dreaming the Fade becomes zero=2E Pse see:

http://dj8wx-dl=2E= de/opera5=2Ejpg

the TX is still on the air=2E  Pse try your = best,

GL and hny

Uwe/dj8wx


Von: rsgb_lf_group@blacksheep=2Eorg
Gesendet: 31=2E12=2E2013 11:43
An: rsgb_lf_group@blacksheep=2Eorg
Betreff: Re: VLF: Uwe Opera-4H

Unfortunately no copy from Uwe, here in JO42FD using the broadband VLF E-field receiver at DF0WD and 0=2E5 mHz FFT bin width=2E=2E

Hny and cul,
  Wolf=2E

Am 31=2E12=2E2013 10:18, schrieb PA1SDB, Peter:
Uwe,
This message (below) ca= me in my mail box at 08:42 UTC today (31-Dec-13)
 
73's Peter=2E=2E
 
 
 
 
----- Original Message -----
Sent: Monday, Decembe= r 30, 2013 2:46 PM
Subject: Re: Re: VLF:= Uwe Opera-4H

HI Peter,

I changed the TX QRG to 8912=2E5Hz running SpecLab in Op-4H (ASK0) mode and made a first test with positive result=2E

the RX was located in 3km distance - Opera v=2E1=2E5=2E0 , RX aerial a 10m wire connected to the soundcard=2E   <= /p>

TX output pwr about 1W=2E  pse see:

http://dj8wx-dl=2Ede/opera3=2Ejpg

I think we should have a try as you are my nearest station rxing VLF=2E

Now Im increasing the PA output pwr to 500Wrms=2E

GL

Uwe/dj8wx  


Von: rsgb_lf_group@blacksheep=2Eorg
Gesendet: 29=2E12=2E2013 09:45
An: rsgb_lf_group@blacksheep=2Eorg
Betreff: Re: VLF: Uwe Opera-4H

Hello Uwe, Markus, VLF
 
Nothing was seen or detected here from your transmission in OPERA mode either=2E=2E
No recognizable trace at all=2E
While you're continuous unmodulated signal almost overloads my soundcard input=2E
 
73's Peter - PA1SDB
 
 
 
----- Original Message -----
Sent: Saturday, December 28, 2013 9:08 PM
Subject: Re: VLF: Uwe Opera-4H


yes Markus, I have had the screen showing the SecLab components in my focus whilst doing  other jobs - for hours=2E

Now the carrier only mode is on the air=2E

Until next test

GL

Uwe/dj8wx


Von: rsgb_lf_group@blacksheep=2Eorg
Gesendet: 28=2E12=2E2013 19:07
An: rsgb_lf_group@blacksheep=2Eorg
Betreff: VLF: Uwe Opera-4H

Uwe,
 =
sorry, nothing was seen or detected here from your transmission today=2E Not a trace=2E Der erste Versuch ist meist nicht genuch (Didi Drahtlos)=2E 
 =
Yes I noticed the good trace on Paul Nicholson's spectrogram http://abelian=2Eorg/vlf/fbins=2Eshtml#p=3D1388246400&b=3D080&= s=3Dsp=2E Just look at it the other way round: You did send a long carrier, only with some short interruptions=2E But the gaps were so short that the spectrum didn't notice them ;-) 
 =
More seriously: = Compared to a continuous carrier, with 50% duty cycle the carrier component is still there but 6 db down (half average voltage)=2E In terms of power, on average you are spending 50% of the power=2E 25% (-6 dB) goes to the central carrier, and the other 25% into the AM sidebands carrying the message=2E    =
 =
What I find strange is that the spectrogram trace seems to have jumped 28 mHz low, once near the beginning and again for an hour around 14:30=2E Are you sure that your samplerate correction had been engaged without interruption?
 =
Best 73,
Markus (DF6NM)
 =
=
Sent: Saturday, December 28, 2013 3:05 PM
Subject: Re: Re: LF: Sending Opera with SpecLab

OK=2E, Markus, but the Todmorden grabber shows the signs=2Eits a surprise for me=2E I didnt expect it samples such relative short signs=2E
GL
Uwe/dj8wx
tks for the correction=2E
Von: rsgb_lf_group@blacksheep=2Eorg
Gesendet: 28=2E12=2E2013 12:47
An: rsgb_lf_group@blacksheep=2Eorg
Betreff: Re: LF: Sending Opera with SpecLab

Uwe,
 =
good new= s! I'm watching and searching ;-) 
 =
Background noise seems to be a few dB higher than the last couple of days, but we'll see what's possible anyway=2E U= nfortunately the OK2BVG grabber website appears to be down at the moment=2E
 =
Good luck!
 =
73, Markus (DF6NM)
 =
PS: In my original mail, the Op-8 line in the speed table erroneously contained an entry for Op-4=2E This has been corrected beneath=2E  
 =
=
Sent: Saturday, December 28, 2013 12:14 PM
Subject: LF: Sending Opera with SpecLab

Hi all,
the PA has been switched on=2E the next txt block will start now=2E
GL
Uwe/dj8wx
Von: rsgb_lf_group@blacksheep=2Eorg
Gesendet: 27=2E12=2E2013 15:47
An: rsgb_lf_group@blacksheep=2Eorg
Betreff: Re: Re: LF: Sending Opera with SpecLab

Hi Markus, Wolf, Stefan, Peter es all,

tks for the advice, Markus

now SpecLab is beaconing in mode Op-4H on 8969=2E99Hz

the PA is off until it is dry outside=2E

I keep your proposal  txing btwn 0700 and 1400MEZ in mind, Markus=2E

GL

Uwe/dj8wx/dj8CAT

 


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