Return-Path: Received: from mtain-mc11.r1000.mx.aol.com (mtain-mc11.r1000.mx.aol.com [172.29.96.83]) by air-dc03.mail.aol.com (v129.4) with ESMTP id MAILINDC031-85ff4d4f09f716c; Sun, 06 Feb 2011 15:52:07 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mc11.r1000.mx.aol.com (Internet Inbound) with ESMTP id 7A51D38000110; Sun, 6 Feb 2011 15:52:05 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PmBZu-0005ox-Df for rs_out_1@blacksheep.org; Sun, 06 Feb 2011 20:51:26 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PmBZt-0005ol-Pi for rsgb_lf_group@blacksheep.org; Sun, 06 Feb 2011 20:51:25 +0000 Received: from out1.ip02ir2.opaltelecom.net ([62.24.128.238]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PmBZq-0000uw-Q1 for rsgb_lf_group@blacksheep.org; Sun, 06 Feb 2011 20:51:25 +0000 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AnwBABWYTk1cEYNM/2dsb2JhbACSb4NiDo5Rc7oEhVoEgWCNTw X-IronPort-AV: E=Sophos;i="4.60,434,1291593600"; d="scan'208,217";a="354842291" Received: from unknown (HELO xphd97xgq27nyf) ([92.17.131.76]) by out1.ip02ir2.opaltelecom.net with SMTP; 06 Feb 2011 20:51:16 +0000 Message-ID: <01be01cbc63f$97c2b3b0$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: <018801cbc634$fc41a270$0401a8c0@xphd97xgq27nyf> Date: Sun, 6 Feb 2011 20:51:13 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: Re: Re: dk7fc Content-Type: multipart/alternative; boundary="----=_NextPart_000_01BB_01CBC63F.977FDE50" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_40_50,HTML_MESSAGE 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: 3039ac1d60534d4f09f4548f X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ------=_NextPart_000_01BB_01CBC63F.977FDE50 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Markus There is no need for QRS600 etc if the VLF TX station is properly equi= pped for the job and likewise the RX station has a suitable antenna an= d receiver.=20 Is this QRB of 831 Kilometres the best DX for DK7FC being received at= QRS1 and QRS3 speed.=20 mal/g3kev ----- Original Message -----=20 From: Markus Vester=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Sunday, February 06, 2011 8:20 PM Subject: LF: Re: dk7fc 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= and not what was being keyed. Now that I know my system is working ne= xt 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 fe= w 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 toda= y's transmission on 8970 Hz. Seeing it in 3 sec and 1 sec resolution= seems 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 featur= es 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 SN= R further - with a large antenna you probably have enough signal and= external noise to dominate over the RX noise contribution. Anyway it= seems 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.= Good 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_01BB_01CBC63F.977FDE50 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Markus
There is no need for QRS600 etc if the VLF TX= station is=20 properly equipped for the job and likewise the RX station has a suitab= le antenna=20 and receiver.
Is this QRB of 831 Kilometres the best DX for= DK7FC being=20 received at QRS1 and QRS3 speed.
mal/g3kev
 
 
----- Original Message -----
Sent: Sunday, February 06, 20= 11 8:20=20 PM
Subject: LF: Re: dk7fc

Mal,
 
your pictures are=20 quite convincing, we can now be sure that you were indeed seeing Ste= fan's=20 signal all the time today.
 
Congrat= ulations, well=20 done! 
 
Best regards,
Markus (DF6NM)
 
PS: It would be fantastic if you wo= uld want=20 to set up a loading coil and TX, and perhaps conduct= =20 a two-way VLF QSO next time Stefan's comes=20 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= down at the=20 end but I was experimenting more with  QRS speeds to see= what=20 happened to your signal. At the end there was some dfcw but I did no= t take any=20 photos at that time. Your signal was solid all day on 8970 when you= were on=20 carrier then keying, no mistake about being the dk7fc signal.=
See attached photos and some drift of a few= Hz at my=20 end.
Today I was only concerned at signal strengt= h 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 no= ise as=20 indicated on speclab and my QTH is vy quiet with no noise.
My screen is adjusted/calibrated for acty at= 1000 hz=20 plus minus a few Hz and look at 1004 Hz for your signal.=
Ignore the qrm trace on the LF sid= e of=20 1000 Hz
73 and gl
de mal/g3kev
  
----- Original Message -----
Sent: Sunday, February 06,= 2011 7:09=20 PM
Subject: Re: dk7fc

Mal,
 
Stefan and I are truely amazed ho= w well you=20 apparently copied today's transmission on 8970 Hz. Seeing it= in 3 sec=20 and 1 sec resolution seems really quite remarkable. The three=20 screenshots you have sent to the RSGB reflector show a= =20 good-looking line on 1004 Hz, which in one case indeed ends= at the=20 right time (14:47 UT).
 
I am wondering if you perhap= s have more=20 screenshots showing features or modulation of the=20 signal. Before closing down, between 16:03 and 16:2= 6 Stefan=20 sent a DFCW-60 message using 0.5 Hz shift (see attached), whi= ch should=20 have been visible on your screen. Did you by chance take a sc= reen copy=20 of that time?
 <= /DIV>
Not sure if re= sonating the=20 antenna would really improve receive SNR further - with a large an= tenna you=20 probably have enough signal and external noise to dominate over th= e RX noise=20 contribution. Anyway it seems you are doing very well with the=20 system as is.
 <= /DIV>
Best 73,
Markus (DF6NM)
From: mal hamilton
Sent: Sunday, February 06, 2011 4:02 PM
Subject: LF: Re: dk7fc

See capture of switch off on 8970 Khz &nbs= p;at 1448=20 utc 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=20 utc GONE.
All visible on speclab at QRS 3
 
De mal/g3kev
 
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