Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dh02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 5DAB2380000AA; Sat, 26 Nov 2011 14:19:07 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RUNlc-0007uN-1e for rs_out_1@blacksheep.org; Sat, 26 Nov 2011 19:18:28 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RUNlb-0007uE-Dh for rsgb_lf_group@blacksheep.org; Sat, 26 Nov 2011 19:18:27 +0000 Received: from out1.ip04ir2.opaltelecom.net ([62.24.128.240]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RUNlY-0004gx-IT for rsgb_lf_group@blacksheep.org; Sat, 26 Nov 2011 19:18:27 +0000 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ak0AAN460U5cGSHA/2dsb2JhbAAMMAiaUA+TGAEBAQEDZxERCwkIBAEBAQkWCAcJAwIBAgE0CQgTBgIBAYgJqGGMbIcxgzEEglyKRo9RiWI X-IronPort-AV: E=Sophos;i="4.69,576,1315177200"; d="scan'208,217";a="353514354" Received: from host-92-25-33-192.as13285.net (HELO [192.168.2.2]) ([92.25.33.192]) by out1.ip04ir2.opaltelecom.net with ESMTP; 26 Nov 2011 19:18:18 +0000 Message-ID: <4ED13B7A.5010701@talktalk.net> Date: Sat, 26 Nov 2011 19:18:18 +0000 From: qrss User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:8.0) Gecko/20111105 Thunderbird/8.0 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org 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> <4ED139AA.5090906@broadpark.no> In-Reply-To: <4ED139AA.5090906@broadpark.no> 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="------------090901030002010602050206" 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: 0:2:498584352:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d41164ed13bab0e69 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------090901030002010602050206 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Hi Steinar We understood you the first time FB :-) Stefan is -127dB in 424uHz with me http://g3zjo.bplaced.net 73 Eddie G3ZJO On 26/11/2011 19:10, Steinar Aanesland wrote: > > 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 Schäfer: >>> VLF, >>> >>> >>> Am 26.11.2011 17:55, schrieb Markus Vester: >>>> Once more, Paul Nicholson is showing a good trace: >>>> http://abelian.org/vlf/fbins.shtml#p=1322319600&b=120&s=sp >>>> >>> >>> 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 >>>> *Sent:* Saturday, November 26, 2011 4:33 PM >>>> *To:* rsgb_lf_group@blacksheep.org >>>> >>>> *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 Glück, >>>> Markus (DF6NM) >>>> >>>> *From:* Stefan Schäfer >>>> *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 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 problem 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 >>>> >>>> >> > --------------090901030002010602050206 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi Steinar

We understood you the first time FB :-)

Stefan is -127dB in 424uHz with me http://g3zjo.bplaced.net

73
Eddie G3ZJO

On 26/11/2011 19:10, Steinar Aanesland wrote:

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 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 17:00 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
 
Sent: Saturday, November 26, 2011 4:33 PM
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 Glück,
Markus (DF6NM)

Sent: Saturday, November 26, 2011 3:57 PM
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 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 problem 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





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