Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-db04.r1000.mx.aol.com (Internet Inbound) with ESMTP id 0BAE43800009F; Sat, 26 Nov 2011 13:05:47 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RUMcg-0006ts-Ja for rs_out_1@blacksheep.org; Sat, 26 Nov 2011 18:05:10 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RUMcg-0006ti-1O for rsgb_lf_group@blacksheep.org; Sat, 26 Nov 2011 18:05:10 +0000 Received: from out1.ip06ir2.opaltelecom.net ([62.24.128.242]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RUMcd-0003um-3J for rsgb_lf_group@blacksheep.org; Sat, 26 Nov 2011 18:05:10 +0000 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Av4AABAq0U5cF/ci/2dsb2JhbAA8CJZIhAgPkCCBBoFtBQEBBQgBAQNJAg8dAQEDBQIBAxEEAQEKJRQBBBoGFggGEwoBAgIBAYd2BqhYjHOHMYMxBIJciggnAY9niWI X-IronPort-AV: E=Sophos;i="4.69,576,1315177200"; d="scan'208,217";a="519941221" Received: from host-92-23-247-34.as13285.net (HELO xphd97xgq27nyf) ([92.23.247.34]) by out1.ip06ir2.opaltelecom.net with SMTP; 26 Nov 2011 18:05:00 +0000 Message-ID: <005101ccac65$e8624350$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: ,<66E491BAB91C48AF81191F4022525A14@DennisPC> <6FE757960E6C447781689D4F19A315AE@DennisPC> <4EC2C6EB.2080201@iup.uni-heidelberg.de> <4EC2DB14.9000807@talktalk.net>,<4ECFD8B6.2050601@iup.uni-heidelberg.de> <4ED0E0EC.9020404@iup.uni-heidelberg.de> <4ED0FE66.2070706@iup.uni-heidelberg.de> <184BB3B594844BF693BC8F53E3BFC8D1@White> <4ED11EFC.1030002@iup.uni-heidelberg.de> Date: Sat, 26 Nov 2011 18:04:57 -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: Re: VLF: 8970 Hz transmissions, soon again here Content-Type: multipart/alternative; boundary="----=_NextPart_000_004E_01CCAC65.E832A7D0" 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-SCOLL-SCORE: 0:2:492028384:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40584ed12a7b1065 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_004E_01CCAC65.E832A7D0 Content-Type: text/plain; charset="ISO-8859-2" Content-Transfer-Encoding: quoted-printable Stefan Visible at 1721 utc -131 dB QRS 600 DFCW de mal/g3kev ----- Original Message -----=20 From: Stefan Sch=E4fer=20 To: rsgb_lf_group@blacksheep.org=20 Cc: Paul=20 Sent: Saturday, November 26, 2011 5:16 PM Subject: Re: VLF: 8970 Hz transmissions, soon again here VLF,=20 Am 26.11.2011 17:55, schrieb Markus Vester:=20 Once more, Paul Nicholson is showing a good trace: http://abelian.org/vlf/fbins.shtml#p=3D1322319600&b=3D120&s=3Dsp Wow, yes, very good! Well, the system runs on the GPS locked system now since 17:00 UTC and = i'm running 780 mA on 8970.00000 Hz. Will go for dinner now and leave = the system running some hours. The WX looks quite useful, no rain, poor = wind and no fog! Maybe i will even run it overnight until tomorrow, = transmitting a streight carrier at 350 W RF. Can't do more = unfortunately, due to the cola-cap ;-) Now as the signal is locked and non-drifting there may come up = something on the 6000-windows... Maybe Paul or others can do some calculations, estimating the ERP? I = think it should be in the range of 200 uW. Up to 6 dB can be added in = further tests, i hope. Markus, a S/N (better S and N ;-) ) plot on your side would be = interesting. My ERP should be constant now so we can observe the QSB, = caused by propagation... A photo of the todays arrangement: = http://dl.dropbox.com/u/19882028/VLF/DSC04268.JPG 73, GL, Stefan/DK7FC ... well done! Markus From: Markus Vester=20 Sent: Saturday, November 26, 2011 4:33 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: VLF: 8970 Hz transmissions, soon again here Stefan, around 15:00, your sig on 8970.008 was visible in Nuernberg, peaking = ~ 20 dB SNR in 0.48 mHz. Viel Gl=FCck, Markus (DF6NM) From: Stefan Sch=E4fer=20 Sent: Saturday, November 26, 2011 3:57 PM To: rsgb_lf_group@blacksheep.org=20 Cc: Paul=20 Subject: Re: VLF: 8970 Hz transmissions, soon again here VLF, I'm now running 350W into the system and get about 0.8 A antenna=20 current. Strong audible partial discharges occurr on a parallel = fixed=20 plate capacitor, spaced by 3 cola bottles (0.33l ;-) ). At 550 mH i = have=20 25 kV rms on the antenna and coil which seems to be no problem at = all. The frequency is still a bit unstable since i took the DDS VFO which = is=20 more comfortable to find the resonance. I will now try to slightly = QRO=20 and then apply a fiber optic cable carrying the GPS locked frequency = coming from the PC/SpecLab, hopefully without to many phase = glitches.=20 Currently i may have an offset of some 20...30 mHz and a slight = drift=20 but it is a first successfully test :-) 73, Stefan/DK7FC ------=_NextPart_000_004E_01CCAC65.E832A7D0 Content-Type: text/html; charset="ISO-8859-2" Content-Transfer-Encoding: quoted-printable
Stefan
Visible at 1721 utc -131 dB
QRS 600 DFCW
 
de mal/g3kev
 
----- Original Message -----
From:=20 Stefan = Sch=E4fer
Cc: Paul
Sent: Saturday, November 26, = 2011 5:16=20 PM
Subject: Re: VLF: 8970 Hz = transmissions,=20 soon again here

VLF,


Am 26.11.2011 17:55, schrieb Markus = Vester:=20
Once more, Paul Nicholson is = showing a good=20 trace:
 
http://abelian.org/vlf/fbins.shtml#p=3D132231960= 0&b=3D120&s=3Dsp

Wow,=20 yes, very good!

Well, the system runs on the GPS locked system = now=20 since 17:00 UTC and i'm running 780 mA on 8970.00000 Hz. Will go for = dinner=20 now and leave the system running some hours. The WX looks quite = useful, no=20 rain, poor wind and no fog! Maybe i will even run it overnight until = tomorrow,=20 transmitting a streight carrier at 350 W RF. Can't do more = unfortunately, due=20 to the cola-cap ;-)

Now as the signal is locked and = non-drifting there=20 may come up something on the 6000-windows...

Maybe Paul or = others can=20 do some calculations, estimating the ERP? I think it should be in the = range of=20 200 uW. Up to 6 dB can be added in further tests, i hope.
Markus, a = S/N=20 (better S and N ;-) ) plot on your side would be interesting. My ERP = should be=20 constant now so we can observe the QSB, caused by = propagation...

A=20 photo of the todays arrangement: http://dl.drop= box.com/u/19882028/VLF/DSC04268.JPG

73,=20 GL, Stefan/DK7FC






  ... well done!   Markus  
From: Markus = Vester=20
Sent: Saturday, November 26, 2011 4:33 PM
Subject: Re: VLF: 8970 Hz transmissions, soon again=20 here

Stefan,
 
around 15:00, your sig on = 8970.008 was=20 visible in Nuernberg, peaking ~ 20 dB SNR in 0.48 = mHz.
 
Viel Gl=FCck,
Markus (DF6NM)

From: Stefan Sch=E4fer
Sent: Saturday, November 26, 2011 3:57 PM
To: rsgb_lf_group@blacksheep.org
Cc: Paul=20
Subject: Re: VLF: 8970 Hz transmissions, soon again=20 here

VLF,

I'm now running 350W into the system and = get=20 about 0.8 A antenna
current. Strong audible partial discharges = occurr on=20 a parallel fixed
plate capacitor, spaced by 3 cola bottles = (0.33l ;-) ).=20 At 550 mH i have
25 kV rms on the antenna and coil which seems = to be no=20 problem at all.

The frequency is still a bit unstable since i = took=20 the DDS VFO which is
more comfortable to find the resonance. I = will now=20 try to slightly QRO
and then apply a fiber optic cable carrying = the GPS=20 locked frequency
coming from the PC/SpecLab, hopefully without = to many=20 phase glitches.
Currently i may have an offset of some 20...30 = mHz and a=20 slight drift
but it is a first successfully test :-)

73,=20 Stefan/DK7FC


------=_NextPart_000_004E_01CCAC65.E832A7D0--