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[195.171.43.25]) by mx.google.com with ESMTP id vo5si17335103wjc.58.2013.12.30.10.56.06 for ; Mon, 30 Dec 2013 10:56:06 -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 1VxhAf-0004by-DL for rs_out_1@blacksheep.org; Mon, 30 Dec 2013 18:02:33 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1VxhAe-0004bp-JR for rsgb_lf_group@blacksheep.org; Mon, 30 Dec 2013 18:02:32 +0000 Received: from smtpout3.wanadoo.co.uk ([80.12.242.59] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1VxhAb-0007N3-AK for rsgb_lf_group@blacksheep.org; Mon, 30 Dec 2013 18:02:31 +0000 Received: from AGB ([95.145.227.206]) by mwinf5d34 with ME id 7u2R1n0044TpYKj03u2RWF; Mon, 30 Dec 2013 19:02:28 +0100 Message-ID: From: "Graham" To: References: <639B5503A94B49F2B6537494DA6E7B15@AGB> <38A2202CB2C94427BA04D7A75A14751E@Extensa> In-Reply-To: <38A2202CB2C94427BA04D7A75A14751E@Extensa> Date: Mon, 30 Dec 2013 18:02:24 -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: 1.6 (+) 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: Pete Yes the more applications running , then there can be a problem with decode ,or decode at very low levels , There is something wrong with the TX sequence , as fade pattern shows the signal stopping before the end of the time line which will reduce the % chance of decode at low level ....... for your test using the Opera system , Uwe could simply use the audio drive from the software , if the SL code is truncated ? [...] Content analysis details: (1.6 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.59 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message 1.6 FR_ALMOST_VIAG2 RAW: Almost looks like viagra. X-Scan-Signature: 1082ae4dd80117f31c5ce18873bed6d3 Subject: Re: Re: VLF: Uwe Opera-4H Content-Type: multipart/alternative; boundary="----=_NextPart_000_0018_01CF0589.4B582500" 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: 3493 This is a multi-part message in MIME format. ------=_NextPart_000_0018_01CF0589.4B582500 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Pete=20 Yes the more applications running , then there can be a problem = with decode ,or decode at very low levels ,=20 There is something wrong with the TX sequence , as fade pattern = shows the signal stopping before the end of the time line which will reduce the % chance of decode at low level ....... for = your test using the Opera system , Uwe could simply use the = audio drive from the software , if the SL code is truncated ? GL- ! G,=20 From: PA1SDB, Peter=20 Sent: Monday, December 30, 2013 5:50 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: Re: VLF: Uwe Opera-4H Somehow I did not got your mail Uwe, Now I read this via Graham... A Local test (2 PC's few meter appart) with OPERA 8 KHz did fail. No decode's. I think that VLF PC was to busy with 4 SL's running on that PC to. Just few minutes ago (17h45) I did configure a OPERA only PC at 8 KHz. Lets try to make that first DL - PA on 8KHz :-) 73's Peter - PA1SDB ----- Original Message -----=20 From: Graham=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Monday, December 30, 2013 3:01 PM 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_0018_01CF0589.4B582500 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
Pete
 
Yes the  more applications  running  , then  = there can=20 be a  problem  with  decode  ,or  decode  = at =20 very low  levels ,
 
There is  something  wrong  with the  TX = sequence ,=20 as  fade pattern  shows the  signal stopping  before = the  end of the  time  line
which will  reduce the  % chance of decode at low  = level=20 ....... for  your  test  using the  Opera  = system =20 , Uwe could  simply  use the  audio  drive  = from=20 the  software  , if the  SL code is  truncated = ?
 
GL- !
 
G,
 
 

Sent: Monday, December 30, 2013 5:50 PM
Subject: Re: Re: VLF: Uwe Opera-4H

Somehow I did not got your mail = Uwe,
Now I read this via Graham...
 
A Local test (2 PC's few meter appart) with = OPERA 8 KHz=20 did fail.
No decode's.
I think that VLF PC was to busy with 4 SL's = running on=20 that PC to.
 
Just few minutes ago (17h45) I did configure=20 a OPERA only PC at 8 KHz.
Lets try to make that first DL - PA on 8KHz=20 :-)
 
73's Peter - PA1SDB
 
 
----- Original Message -----
From:=20 Graham
Sent: Monday, December 30, 2013 = 3:01=20 PM
Subject: Re: Re: VLF: Uwe = Opera-4H

Uwe 
 
Well  that's  the  first  past =  the  garden=20 gate  ! unless  the  drive  is  =20 3Kmt   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=20 Op-4H (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=20 station 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: = 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 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=20 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=20 seen or detected here from your transmission today. Not a = trace. Der erste Versuch ist = meist=20 nicht genuch (Didi Drahtlos). 
 
Yes I = noticed the=20 good 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=20 notice 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 = 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=20 seems to be a few dB higher than the last couple of days, but = we'll see=20 what's possible anyway. Unfortunately the = OK2BVG grabber=20 website appears to be down at the moment.
 
Good=20 luck!
 
73, Markus=20 (DF6NM)
 
PS: In my = original=20 mail, the Op-8 line in the speed table erroneously = contained=20 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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