Return-Path: Received: from mtain-dk06.r1000.mx.aol.com (mtain-dk06.r1000.mx.aol.com [172.29.180.10]) by air-me03.mail.aol.com (v129.4) with ESMTP id MAILINME031-8ba84d4f02e018a; Sun, 06 Feb 2011 15:21:52 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dk06.r1000.mx.aol.com (Internet Inbound) with ESMTP id D1EC6380001E0; Sun, 6 Feb 2011 15:21:50 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PmB6c-0005Wr-JJ for rs_out_1@blacksheep.org; Sun, 06 Feb 2011 20:21:10 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PmB6c-0005Wi-12 for rsgb_lf_group@blacksheep.org; Sun, 06 Feb 2011 20:21:10 +0000 Received: from imr-ma03.mx.aol.com ([64.12.206.41]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PmB6Y-0000hI-V8 for rsgb_lf_group@blacksheep.org; Sun, 06 Feb 2011 20:21:10 +0000 Received: from mtaout-da02.r1000.mx.aol.com (mtaout-da02.r1000.mx.aol.com [172.29.51.130]) by imr-ma03.mx.aol.com (8.14.1/8.14.1) with ESMTP id p16KKjYc009491 for ; Sun, 6 Feb 2011 15:20:45 -0500 Received: from White (nrbg-4d07580b.pool.mediaWays.net [77.7.88.11]) by mtaout-da02.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id C5DB9E0000DD for ; Sun, 6 Feb 2011 15:20:38 -0500 (EST) Message-ID: From: "Markus Vester" To: References: <018801cbc634$fc41a270$0401a8c0@xphd97xgq27nyf> Date: Sun, 6 Feb 2011 21:20:41 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: Re: dk7fc Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01CBC643.B5483D70" 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 x-aol-global-disposition: G x-aol-sid: 3039ac1db40a4d4f02de1d93 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ------=_NextPart_000_0009_01CBC643.B5483D70 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mal, your pictures are quite convincing, we can now be sure that you were= indeed seeing Stefan's signal all the time today.=20 Congratulations, well done!=20 Best regards, Markus (DF6NM) PS: It would be fantastic if you would want to set up a loading coil= and TX, and perhaps conduct a two-way VLF QSO next time Stefan's come= s on... From: mal hamilton=20 Sent: Sunday, February 06, 2011 8:35 PM To: Markus Vester=20 Subject: Re: dk7fc Markus I did take a few shots and did see u close down at the end but I was= experimenting more with QRS speeds to see what happened to your sign= al. At the end there was some dfcw but I did not take any photos at th= at time. Your signal was solid all day on 8970 when you were on carrie= r then keying, no mistake about being the dk7fc signal. See attached photos and some drift of a few Hz at my end.=20 Today I was only concerned at signal strength at various QRS speeds an= d not what was being keyed. Now that I know my system is working next= time we should try a QSO. The signal was peaking 23 dB above noise as= indicated on speclab and my QTH is vy quiet with no noise. My screen is adjusted/calibrated for acty at 1000 hz plus minus a few= Hz and look at 1004 Hz for your signal. Ignore the qrm trace on the LF side of 1000 Hz 73 and gl de mal/g3kev =20 ----- Original Message -----=20 From: Markus Vester=20 To: g3kevmal@talktalk.net=20 Cc: Stefan Sch=E4fer=20 Sent: Sunday, February 06, 2011 7:09 PM Subject: Re: dk7fc Mal, Stefan and I are truely amazed how well you apparently copied today'= s transmission on 8970 Hz. Seeing it in 3 sec and 1 sec resolution see= ms really quite remarkable. The three screenshots you have sent to the= RSGB reflector show a good-looking line on 1004 Hz, which in one case= indeed ends at the right time (14:47 UT). I am wondering if you perhaps have more screenshots showing features= or modulation of the signal. Before closing down, between 16:03 and= 16:26 Stefan sent a DFCW-60 message using 0.5 Hz shift (see attached)= , which should have been visible on your screen. Did you by chance tak= e a screen copy of that time? Not sure if resonating the antenna would really improve receive SNR= further - with a large antenna you probably have enough signal and ex= ternal noise to dominate over the RX noise contribution. Anyway it see= ms you are doing very well with the system as is. Best 73, Markus (DF6NM) From: mal hamilton=20 Sent: Sunday, February 06, 2011 4:02 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: Re: dk7fc See capture of switch off on 8970 Khz at 1448 utc speclab qrs3. Goo= d signal all day on 8970 various modes.=20 Read freq line 1004=20 g3kev ----- Original Message -----=20 From: mal hamilton=20 To: rsgb=20 Sent: Sunday, February 06, 2011 2:51 PM Subject: LF: dk7fc At 1447 sig getting weak kite descending and 1448 utc GONE.=20 All visible on speclab at QRS 3 De mal/g3kev ------=_NextPart_000_0009_01CBC643.B5483D70 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Mal,
 
your pictures are=20 quite convincing, we can now be sure that you were indeed seeing Stefa= n's signal=20 all the time today.
 
Congratul= ations, well=20 done! 
 
Best regards,
Markus (DF6NM)
 
PS: It would be fantastic if you woul= d want to=20 set up a loading coil and TX, and perhaps conduct a&nbs= p;two-way=20 VLF QSO next time Stefan's comes on...

From: mal hamilton
Sent: Sunday, February 06, 2011 8:35 PM
Subject: Re: dk7fc
=
Markus
I did take a few shots and did see u close dow= n at the end=20 but I was experimenting more with  QRS speeds to see what ha= ppened to=20 your signal. At the end there was some dfcw but I did not take any pho= tos at=20 that time. Your signal was solid all day on 8970 when you were on carr= ier then=20 keying, no mistake about being the dk7fc signal.
See attached photos and some drift of a few Hz= at my end.=20
Today I was only concerned at signal strength= at various=20 QRS speeds and not what was being keyed. Now that I know my system is= working=20 next time we should try a QSO. The signal was peaking 23 dB above nois= e as=20 indicated on speclab and my QTH is vy quiet with no noise.
My screen is adjusted/calibrated for acty at= 1000 hz plus=20 minus a few Hz and look at 1004 Hz for your signal.
Ignore the qrm trace on the LF side= of=20 1000 Hz
73 and gl
de mal/g3kev
  
----- Original Message -----
Sent: Sunday, February 06, 20= 11 7:09=20 PM
Subject: Re: dk7fc
=
Mal,
 
Stefan and I are truely amazed how= well you=20 apparently copied today's transmission on 8970 Hz. Seeing it in= 3 sec and=20 1 sec resolution seems really quite remarkable. The three screenshot= s you=20 have sent to the RSGB reflector show a good-looking line on 100= 4 Hz,=20 which in one case indeed ends at the right time (14:47 UT).
 
I am wondering if you perhaps= have more=20 screenshots showing features or modulation of the=20 signal. Before closing down, between 16:03 and 16:26= Stefan=20 sent a DFCW-60 message using 0.5 Hz shift (see attached), which= should=20 have been visible on your screen. Did you by chance take a scre= en copy of=20 that time?
 
Not sure if reso= nating the=20 antenna would really improve receive SNR further - with a large ante= nna you=20 probably have enough signal and external noise to dominate over the= RX noise=20 contribution. Anyway it seems you are doing very well with the=20 system as is.
 
Best 73,<= /DIV>
Markus (DF6NM)
Sent: Sunday, February 06, 2011 4:02 PM
Subject: LF: Re: dk7fc
=
See capture of switch off on 8970 Khz  = at 1448 utc=20 speclab qrs3. Good signal all day on 8970 various modes.
Read freq line 1004
 
g3kev
 
----- Original Message -----
From:=20 mal=20 hamilton
To: rsgb
Sent: Sunday, February 06,= 2011 2:51=20 PM
Subject: LF: dk7fc

At 1447 sig getting weak kite descending= and 1448 utc=20 GONE.
All visible on speclab at QRS 3
 
De mal/g3kev
 
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