Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mc01.r1000.mx.aol.com (Internet Inbound) with ESMTP id EA22D3800008B; Sat, 26 Nov 2011 14:11:47 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RUNe7-0007mZ-TZ for rs_out_1@blacksheep.org; Sat, 26 Nov 2011 19:10:43 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RUNe6-0007mQ-M2 for rsgb_lf_group@blacksheep.org; Sat, 26 Nov 2011 19:10:42 +0000 Received: from thalia-smout.broadpark.no ([80.202.8.21]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RUNe5-0004dj-Ag for rsgb_lf_group@blacksheep.org; Sat, 26 Nov 2011 19:10:42 +0000 Received: from ignis-smin.broadpark.no ([80.202.8.11]) by thalia-smout.broadpark.no (Sun Java(tm) System Messaging Server 7u3-15.01 64bit (built Feb 12 2010)) with ESMTP id <0LVA00GVK7XN1090@thalia-smout.broadpark.no> for rsgb_lf_group@blacksheep.org; Sat, 26 Nov 2011 20:10:35 +0100 (CET) Received: from [127.0.0.1] ([80.202.132.143]) by ignis-smin.broadpark.no (Sun Java(tm) System Messaging Server 7u3-15.01 64bit (built Feb 12 2010)) with ESMTPA id <0LVA00JKW7XMWS20@ignis-smin.broadpark.no> for rsgb_lf_group@blacksheep.org; Sat, 26 Nov 2011 20:10:35 +0100 (CET) Date: Sat, 26 Nov 2011 20:10:34 +0100 From: Steinar Aanesland In-reply-to: <4ED12C77.9030707@broadpark.no> To: rsgb_lf_group@blacksheep.org Message-id: <4ED139AA.5090906@broadpark.no> MIME-version: 1.0 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> <4ED12C77.9030707@broadpark.no> User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:8.0) Gecko/20111105 Thunderbird/8.0 X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RATWARE_GECKO_BUILD=1.426 Subject: Re: VLF: 8970 Hz transmissions, soon again here Content-type: multipart/alternative; boundary="Boundary_(ID_bmoVds/F36HyLfoDSH9nhw)" 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_20_30,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: 0:2:471091136:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d60494ed139f30927 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --Boundary_(ID_bmoVds/F36HyLfoDSH9nhw) Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: QUOTED-PRINTABLE hummmm "You have probably mention this some place, but please repeat = it me" is very "Norwegian-English" . "you've probably mentioned it somewhere, but please repeat it for me" is probably more like it ;) S la5vna Den 26.11.2011 19:14, skrev Steinar Aanesland: > > Stefan > > You have probably mention this some place, but please repeat it me, > what kind of antenna are you using now ? > > la5vna S > > > Den 26.11.2011 18:16, skrev Stefan Sch=E4fer: >> VLF, >> >> >> Am 26.11.2011 17:55, schrieb Markus Vester: >>> Once more, Paul Nicholson is showing a good trace: >>> =20 >>> 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 an= d >> 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 unt= il >> tomorrow, transmitting a streight carrier at 350 W RF. Can't do mo= re >> 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 Q= SB, >> caused by propagation... >> >> A photo of the todays arrangement: >> http://dl.dropbox.com/u/19882028/VLF/DSC04268.JPG >> >> 73, GL, Stefan/DK7FC >> >> >> >> >> >> >>> =20 >>> ... well done! >>> =20 >>> Markus >>> =20 >>> *From:* Markus Vester >>> *Sent:* Saturday, November 26, 2011 4:33 PM >>> *To:* rsgb_lf_group@blacksheep.org >>> >>> *Subject:* Re: VLF: 8970 Hz transmissions, soon again here >>> >>> Stefan, >>> =20 >>> around 15:00, your sig on 8970.008 was visible in Nuernberg, peak= ing >>> ~ 20 dB SNR in 0.48 mHz. >>> =20 >>> 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 >>> *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 >>> current. Strong audible partial discharges occurr on a parallel f= ixed >>> plate capacitor, spaced by 3 cola bottles (0.33l ;-) ). At 550 mH= i >>> have >>> 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 wh= ich is >>> more comfortable to find the resonance. I will now try to slightl= y QRO >>> and then apply a fiber optic cable carrying the GPS locked freque= ncy >>> coming from the PC/SpecLab, hopefully without to many phase glitc= hes. >>> Currently i may have an offset of some 20...30 mHz and a slight d= rift >>> but it is a first successfully test :-) >>> >>> 73, Stefan/DK7FC >>> >>> > --Boundary_(ID_bmoVds/F36HyLfoDSH9nhw) Content-type: text/html; CHARSET=US-ASCII Content-transfer-encoding: QUOTED-PRINTABLE
hummmm "You have probably mention this some place, but please rep= eat it me" is very "Norwegian-English"  . "you've probably menti= oned it somewhere, but please repeat it for me" is probably more like it = ;)

S la5vna





Den 26.11.2011 19:14, skrev Steinar Aanesland:

Stefan

You have probably mention this some place, but please repeat it me, what kind of antenna are you using now ?

la5vna S


Den 26.11.2011 18:16, skrev Stefan Schäfer:
VLF,


Am 26.11.2011 17:55, schrieb Markus Vester:
Once more, Paul Nicholson is showing a good trace:
 

Wow, yes, very good!

Well, the system runs on the GPS locked system now since 17:0= 0 UTC and i'm running 780 mA on 8970.00000 Hz. Will go for dinn= er now and leave the system running some hours. The WX looks qui= te 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 u= p 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 b= e 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
 
Sent: Saturday, November 26, 2011 4:33 PM
Subject: Re: VLF: 8970 Hz transmissions, so= on again here

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

Sent: Saturday, November 26, 2011 3:57 PM
Cc: Paul =
Subject: Re: VLF: 8970 Hz transmissions, so= on again here

VLF,

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

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

73, Stefan/DK7FC




--Boundary_(ID_bmoVds/F36HyLfoDSH9nhw)--