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[195.171.43.25]) by mx.google.com with ESMTP id ca1si17367322wib.87.2013.12.30.08.24.02 for ; Mon, 30 Dec 2013 08:24:03 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1VxfAi-0003KW-Qi for rs_out_1@blacksheep.org; Mon, 30 Dec 2013 15:54:28 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1VxfAh-0003KN-Tq for rsgb_lf_group@blacksheep.org; Mon, 30 Dec 2013 15:54:27 +0000 Received: from smtpout5.wanadoo.co.uk ([80.12.242.80] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1VxfAf-0006ll-6i for rsgb_lf_group@blacksheep.org; Mon, 30 Dec 2013 15:54:26 +0000 Received: from AGB ([2.31.68.46]) by mwinf5d69 with ME id 7ruQ1n0030ztbei03ruQdu; Mon, 30 Dec 2013 16:54:24 +0100 Message-ID: <53F83637553A4527B7B87862CCF958C1@AGB> From: "Graham" To: References: <639B5503A94B49F2B6537494DA6E7B15@AGB> In-Reply-To: <639B5503A94B49F2B6537494DA6E7B15@AGB> Date: Mon, 30 Dec 2013 15:54:24 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 x-mimeole: Produced By Microsoft MimeOLE V14.0.8117.416 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. 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: > +2 dB 20% Fade , must be a short tx ? 15:34 8 DJ8WX de DJ8WX Op4H 0 mi +2 dB F:20%_End in muensterdorf with 8w + L, 300m G, [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.80 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: c9507d5215a3a061de08a1c909797eee Subject: Re: Re: VLF: Uwe Opera-4H Content-Type: multipart/alternative; boundary="----=_NextPart_000_006C_01CF0577.6929D4F0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,HTML_MESSAGE, MISSING_OUTLOOK_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: 3492 This is a multi-part message in MIME format. ------=_NextPart_000_006C_01CF0577.6929D4F0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable > =20 +2 dB 20% Fade , must be a short tx ? 15:34 8 DJ8WX de DJ8WX Op4H 0 mi +2 dB F:20%_End in muensterdorf with 8w = + L, 300m G,=20 From: Graham=20 Sent: Monday, December 30, 2013 3:01 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: Re: VLF: Uwe Opera-4H Uwe =20 Well that's the first past the garden gate ! unless the drive = is 3Kmt long hihi Fade shows 32 % ? that's only 2/3 of the tx time line , was = the Tx stopped ?=20 still at -2 dB s/n thats still ~ +48 dB qro ! 73-G,=20 From: uwe-jannsen@kabelmail.de=20 Sent: Monday, December 30, 2013 2:46 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: Re: VLF: Uwe Opera-4H HI Peter, I changed the TX QRG to 8912.5Hz running SpecLab in Op-4H (ASK0) mode = and made a first test with positive result.=20 the RX was located in 3km distance - Opera v.1.5.0 , RX aerial a 10m = wire connected to the soundcard. =20 TX output pwr about 1W. pse see: http://dj8wx-dl.de/opera3.jpg=20 I think we should have a try as you are my nearest station rxing VLF.=20 Now Im increasing the PA output pwr to 500Wrms.=20 GL=20 Uwe/dj8wx =20 -------------------------------------------------------------------------= ------- Von: rsgb_lf_group@blacksheep.org Gesendet: 29.12.2013 09:45 An: rsgb_lf_group@blacksheep.org Betreff: Re: VLF: Uwe Opera-4H -------------------------------------------------------------------------= ------- Hello Uwe, Markus, VLF Nothing was seen or detected here from your transmission in OPERA mode = either. No recognizable trace at all. While you're continuous unmodulated signal almost overloads my soundcard = input. 73's Peter - PA1SDB ----- Original Message -----=20 From: uwe-jannsen@kabelmail.de=20 To: rsgb_lf_group@blacksheep.org=20 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. Now the carrier only mode is on the air.=20 Until next test=20 GL Uwe/dj8wx -------------------------------------------------------------------------= ----- Von: rsgb_lf_group@blacksheep.org Gesendet: 28.12.2013 19:07 An: rsgb_lf_group@blacksheep.org Betreff: VLF: Uwe Opera-4H -------------------------------------------------------------------------= ----- Uwe, sorry, nothing was seen or detected here from your transmission today. = Not a trace. Der erste Versuch ist meist nicht genuch (Didi Drahtlos).=20 Yes I noticed the good trace on Paul Nicholson's spectrogram = http://abelian.org/vlf/fbins.shtml#p=3D1388246400&b=3D080&s=3Dsp. Just = look at it the other way round: You did send a long carrier, only with = some short interruptions. But the gaps were so short that the spectrum = didn't notice them ;-)=20 More seriously: Compared to a continuous carrier, with 50% duty cycle = the carrier component is still there but 6 db down (half average = voltage). In terms of power, on average you are spending 50% of the = power. 25% (-6 dB) goes to the central carrier, and the other 25% into = the AM sidebands carrying the message. =20 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. = Are you sure that your samplerate correction had been engaged without = interruption? Best 73, Markus (DF6NM) From: uwe-jannsen@kabelmail.de=20 Sent: Saturday, December 28, 2013 3:05 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: Re: LF: Sending Opera with SpecLab OK., Markus, but the Todmorden grabber shows the signs.its a surprise = for me. I didnt expect it samples such relative short signs. GL Uwe/dj8wx tks for the correction. -------------------------------------------------------------------------= ----- Von: rsgb_lf_group@blacksheep.org Gesendet: 28.12.2013 12:47 An: rsgb_lf_group@blacksheep.org Betreff: Re: LF: Sending Opera with SpecLab -------------------------------------------------------------------------= ----- Uwe, good news! I'm watching and searching ;-)=20 Background noise seems to be a few dB higher than the last couple of = days, but we'll see what's possible anyway. Unfortunately the OK2BVG = grabber website appears to be down at the moment. 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. This has been corrected beneath. =20 From: uwe-jannsen@kabelmail.de=20 Sent: Saturday, December 28, 2013 12:14 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: Sending Opera with SpecLab Hi all, the PA has been switched on. the next txt block will start now. GL Uwe/dj8wx -------------------------------------------------------------------------= ----- Von: rsgb_lf_group@blacksheep.org Gesendet: 27.12.2013 15:47 An: rsgb_lf_group@blacksheep.org 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 8969.99Hz the PA is off until it is dry outside.=20 I keep your proposal txing btwn 0700 and 1400MEZ in mind, Markus. GL=20 Uwe/dj8wx/dj8CAT ------=_NextPart_000_006C_01CF0577.6929D4F0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
> 
 
+2 dB    20% Fade , must be a  short  = tx =20 ?

15:34 8 DJ8WX de DJ8WX Op4H 0 mi +2 dB F:20%_End in = muensterdorf with=20 8w + L, 300m

G,

 

 
 

From: Graham
Sent: Monday, December 30, 2013 3:01 PM
Subject: Re: Re: VLF: Uwe Opera-4H

Uwe 
 
Well  that's  the  first  past  the  = garden=20 gate  ! unless  the  drive  is   = 3Kmt  =20 long hihi
 
Fade  shows   32 %  ? that's  =20 only  2/3    of the  tx  time line =  ,=20 was the  Tx stopped  ?
 
still at  -2 dB s/n  thats still  ~  +48 dB = qro =20 !
 
73-G,
 

From: uwe-jannsen@kabelmail.de =
Sent: Monday, December 30, 2013 2:46 PM
Subject: Re: Re: VLF: Uwe Opera-4H

HI Peter,

I changed the TX QRG to 8912.5Hz running SpecLab = in Op-4H=20 (ASK0) mode and made a first test with positive result.

the RX was located in 3km distance - Opera v.1.5.0 , RX aerial = a 10m=20 wire connected to the soundcard.   

TX output pwr about 1W.  pse see:

http://dj8wx-dl.de/opera3.jpg =

I think we should have a try as you are my nearest = station=20 rxing VLF.

Now Im increasing the PA output pwr to 500Wrms.=20

GL

Uwe/dj8wx  


Von: rsgb_lf_group@blacksheep.org
Gesendet: 29.12.2013 09:45
An:=20 rsgb_lf_group@blacksheep.org
Betreff: Re: VLF: Uwe Opera-4H

Hello Uwe, Markus, = VLF
 
Nothing was seen or detected = here from=20 your transmission in OPERA mode either.
No recognizable trace at=20 all.
While you're continuous = unmodulated=20 signal almost overloads my soundcard input.
 
73's Peter - = PA1SDB
 
 
 
----- Original Message -----
From: uwe-jannsen@kabelmail.de =
To: rsgb_lf_group@blacksheep.org= =20
Sent: Saturday, = December 28,=20 2013 9:08 PM
Subject: Re: VLF: Uwe = Opera-4H


yes Markus, I have had the screen showing the SecLab = components=20 in my focus whilst doing  other jobs - for hours.

Now the carrier only mode is on the air. =

Until next test

GL

Uwe/dj8wx


Von: rsgb_lf_group@blacksheep.org=
Gesendet:=20 28.12.2013 19:07
An: rsgb_lf_group@blacksheep.org=
Betreff:=20 VLF: Uwe Opera-4H

Uwe,
 
sorry, = nothing was seen=20 or detected here from your transmission today. Not a trace. Der erste Versuch ist = meist nicht=20 genuch (Didi Drahtlos). 
 
Yes I noticed = the good=20 trace on Paul Nicholson's spectrogram http://abelian.org/vlf/fbins.shtml#p=3D1388246400&b=3D080&am= p;s=3Dsp.=20 Just look = at it the=20 other way round: You did send a long carrier, only with some short=20 interruptions. But the gaps were so short that the spectrum = didn't notice=20 them ;-) 
 
More = seriously:=20 Compared to = a=20 continuous carrier, with 50% duty cycle the = carrier=20 component is still there but 6 db down (half average voltage). In = terms of=20 power, on average you are spending 50% of the power. 25% (-6 = dB)=20 goes to the central carrier, and the other 25% into the AM = sidebands=20 carrying the message.    
 
What I=20 find strange is that the spectrogram trace seems to = have=20 jumped 28 mHz low, once near the beginning and again = for an=20 hour around 14:30. Are you sure that your samplerate correction=20 had been engaged without interruption?
 
Best = 73,
Markus=20 (DF6NM)
 

From: uwe-jannsen@kabelmail.de =
Sent: Saturday, December 28, 2013 3:05 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: Re: Re: LF: Sending Opera with=20 SpecLab

OK.,=20 Markus, but the Todmorden grabber shows the signs.its a surprise for = me. I=20 didnt expect it samples such relative short = signs.
GL
Uwe/dj8wx
tks=20 for the correction.
Von: rsgb_lf_group@blacksheep.org=
Gesendet:=20 28.12.2013 12:47
An: rsgb_lf_group@blacksheep.org=
Betreff:=20 Re: LF: Sending Opera with SpecLab

Uwe,
 
good news! I'm=20 watching and searching ;-) 
 
Background = noise seems=20 to be a few dB higher than the last couple of days, but we'll see = what's=20 possible anyway. Unfortunately the OK2BVG = grabber=20 website appears to be down at the moment.
 
Good = luck!
 
73, Markus=20 (DF6NM)
 
PS: In my = original=20 mail, the Op-8 line in the speed table erroneously contained = an entry for Op-4. This has been corrected=20 beneath.  
 

From: uwe-jannsen@kabelmail.de =
Sent: Saturday, December 28, 2013 12:14 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: LF: Sending Opera with=20 SpecLab

Hi=20 all,
the PA has been switched on. the next txt block will start=20 now.
GL
Uwe/dj8wx
Von: rsgb_lf_group@blacksheep.org=
Gesendet:=20 27.12.2013 15:47
An: rsgb_lf_group@blacksheep.org=
Betreff:=20 Re: Re: LF: Sending Opera with SpecLab

Hi Markus, Wolf, Stefan, Peter es all,

tks for the=20 advice, Markus

now SpecLab is beaconing in mode Op-4H on = 8969.99Hz

the PA is off until it is dry outside.

I keep your proposal  txing btwn 0700 and 1400MEZ in = mind,=20 Markus.

GL

Uwe/dj8wx/dj8CAT

=

 

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