Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 96E31380000B9; Fri, 25 Nov 2011 16:23:20 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RU3E0-0000Lo-M3 for rs_out_1@blacksheep.org; Fri, 25 Nov 2011 21:22:24 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RU3Dz-0000Lf-KE for rsgb_lf_group@blacksheep.org; Fri, 25 Nov 2011 21:22:23 +0000 Received: from smtp-out-01.simnet.is ([194.105.231.27]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RU3Dx-0002TK-Cs for rsgb_lf_group@blacksheep.org; Fri, 25 Nov 2011 21:22:23 +0000 Authentication-Results: smtp-out-01.simnetpro.is; dkim=neutral (message not signed) header.i=none X-SBRS: 2.9 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AvoCAL0F0E7CaehFgWdsb2JhbABEgk2lNoJ9IgEBFiYlgXIBAQUIAiNZAwIJEQQBASgHGS0JCAIEEwsFC4dsthSKYgSHcIxahSyMXw Received: from consumer-mta-02.simnet.is ([194.105.232.69]) by smtp-out-01.simnetpro.is with ESMTP; 25 Nov 2011 21:22:12 +0000 From: =?iso-8859-1?Q?Halld=F3r?= To: References: <66E491BAB91C48AF81191F4022525A14@DennisPC> <6FE757960E6C447781689D4F19A315AE@DennisPC> <4EC2C6EB.2080201@iup.uni-heidelberg.de> <4EC2DB14.9000807@talktalk.net> <4ECFD8B6.2050601@iup.uni-heidelberg.de> <4ECFEA18.7080608@broadpark.no> <4ECFEBD3.8020506@iup.uni-heidelberg.de> <4ECFF142.2050902@broadpark.no> <4ECFFB63.6090406@iup.uni-heidelberg.de> In-Reply-To: <4ECFFB63.6090406@iup.uni-heidelberg.de> Date: Fri, 25 Nov 2011 21:22:12 -0000 Message-ID: <01a701ccabb8$4c255930$e4700b90$@simnet.is> MIME-Version: 1.0 X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQF6sO3UBCdEIgQTosWd7QsdAri4tgJ7wSyeAcS/uUMCeuVjvQFfWOLnAfFTmNkBol88FwGn094GAcnab/MCKr+JogGqnX8SlcphWJA= Content-Language: is 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_01A8_01CCABB8.4C27CA30" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.2 required=5.0 tests=HTML_50_60,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: 0:2:459858528:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d404d4ed007477ed8 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multipart message in MIME format. ------=_NextPart_000_01A8_01CCABB8.4C27CA30 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable =20 Steinar=20 =20 When starting my grabber Stefan and Chris thought me some tricks: =20 =93and use the sample rate detector to lock your sound card to a stable signal=94=20 =20 That helps if you are using the 60000 window. =20 73 Halld=F3r TF3HZ =20 From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Stefan = Sch=E4fer Sent: 25. n=F3vember 2011 20:33 To: rsgb_lf_group@blacksheep.org Subject: Re: VLF: 8970 Hz transmissions, soon again here =20 Steinar, 600 s/pix. is a good start point for tmw but i would suggest to use a = even narrower FFT bin width like 424 uHz. Also a well configured noise = blanker can easily help to get another 6 dB S/N as we have seen in the past. I attach you a "DFCW-6000.usr" which you can load into SpecLab. This was used successfully in many last experiments on many grabbers :-) Not you have to wait some 10 minutes until the first pixel appears so do = not wonder ;-) 73, Stefan/DK7FC Am 25.11.2011 20:49, schrieb Steinar Aanesland:=20 Stefan I had plans to use 600 sec/step 1mHz res. you will find under "quick settings/Slow Morse(..)" in SpecLab, but f you have a better solution, I will be happy to try it. la5vna S Den 25.11.2011 20:26, skrev Stefan Sch=E4fer: > Thanks Steinar, > > But it will be a first pre-test, i may not get the maximum strength = that i want but we'll see. > > How do you receive 8970 Hz on the software side? Do you have a "DFCW-6000.usr" for the SpecLab settings or how did you configure the software (which?)? > > 73, Stefan > > Am 25.11.2011 20:18, schrieb Steinar Aanesland: >> >> I will try to capture you Stefan , but I am afraid I got too much = noise here to get a good result :( >> >> LA5VNA S >> >> >> ------=_NextPart_000_01A8_01CCABB8.4C27CA30 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

 

Steinar

 

When starting my grabber Stefan and Chris thought me some = tricks:

 

“and use the sample rate detector to lock your sound card to a = stable signal”

 

That helps if you are using the 60000 window.

 

73

Halld=F3r

TF3HZ

 

From: owner-rsgb_lf_group@blacksheep.org = [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Stefan = Sch=E4fer
Sent: 25. n=F3vember 2011 20:33
To: = rsgb_lf_group@blacksheep.org
Subject: Re: VLF: 8970 Hz = transmissions, soon again here

 

Steinar,

600 s/pix. is a good start point for = tmw but i would suggest to use a even narrower FFT bin width like 424 = uHz. Also a well configured noise blanker can easily help to get another = 6 dB S/N as we have seen in the past.

I attach you a = "DFCW-6000.usr" which you can load into SpecLab. This was used = successfully in many last experiments on many grabbers :-)

Not = you have to wait some 10 minutes until the first pixel appears so do not = wonder ;-)

73, Stefan/DK7FC

Am 25.11.2011 20:49, schrieb = Steinar Aanesland:


Stefan

I had plans to use  600 = sec/step 1mHz res. you will find  under "quick settings/Slow = Morse(..)" in SpecLab, but f you have a better solution, I will be = happy to try it.

la5vna S



Den 25.11.2011 20:26, = skrev Stefan Sch=E4fer:
> Thanks Steinar,
>
> But it = will be a first pre-test, i may not get the maximum strength that i want = but we'll see.
>
> How do you receive 8970 Hz on the = software side? Do you have a "DFCW-6000.usr" for the SpecLab = settings or how did you configure the software (which?)?
>
> = 73, Stefan
>
> Am 25.11.2011 20:18, schrieb Steinar = Aanesland:
>>
>> I will try to capture you Stefan , = but I am afraid I got too much noise here to get a good result = :(
>>
>> LA5VNA = S
>>
>>
>>

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