Return-Path: X-Spam-DCC: paranoid 1181; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,HTML_MESSAGE,SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u3DAPi4h015470 for ; Wed, 13 Apr 2016 12:25:44 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aqHvk-000185-Nz for rs_out_1@blacksheep.org; Wed, 13 Apr 2016 11:21:52 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aqHvk-00017w-DF for rsgb_lf_group@blacksheep.org; Wed, 13 Apr 2016 11:21:52 +0100 Received: from s16315160.onlinehome-server.info ([87.106.80.234] helo=mail.vigilant.es) by relay1.thorcom.net with esmtp (Exim 4.87) (envelope-from ) id 1aqHvi-0005tm-Gg for rsgb_lf_group@blacksheep.org; Wed, 13 Apr 2016 11:21:51 +0100 Received: from servigilant.vigilant.local ([87.216.178.132]) by vigilant.es with MailEnable ESMTP; Wed, 13 Apr 2016 12:21:35 +0200 Received: from servigilant.vigilant.local ([fe80::3cdf:95f8:c1c9:3931]) by servigilant.vigilant.local ([fe80::3cdf:95f8:c1c9:3931%13]) with mapi id 14.03.0123.003; Wed, 13 Apr 2016 12:21:34 +0200 From: =?iso-8859-1?Q?VIGILANT_Luis_Fern=E1ndez?= To: "rsgb_lf_group@blacksheep.org" Thread-Topic: LF: Also EA in VLF soon? Thread-Index: AQHRlWndHEnLEf4x1EKq7qyHG8a6QZ+HqzKw Date: Wed, 13 Apr 2016 10:21:33 +0000 Message-ID: <579355A36AEE9D4FA555C45D556003AB53B685C8@servigilant.vigilant.local> In-Reply-To: <570E14EE.5030101@posteo.de> Accept-Language: es-ES, en-US Content-Language: es-ES X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [192.168.0.2] MIME-Version: 1.0 X-Scan-Signature: 860e51ceecdf98b32e8eba101d9d472d Subject: RE: LF: Also EA in VLF soon? Content-Type: multipart/alternative; boundary="_000_579355A36AEE9D4FA555C45D556003AB53B685C8servigilantvigi_" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 7689 --_000_579355A36AEE9D4FA555C45D556003AB53B685C8servigilantvigi_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ooops !! VLF This is getting too fast, isn't it ? ;-) Living in a 26th floor, my main enemy and at the same time my best friend i= s the elevator :-))) The motor variators using three plase 380V are very noisy. Specially from D= C to 10MHz I have been trying to fix this even with the help of the lift maintenance c= ompany, but it is impossible. I have my antennas just on the roof cover of = the lift motors and controllers cabin. The variators include all the standar fe= rrite "filters" but can't fully solve the problem. It would probably need a= matched filter, not a standar "plug&play" but this things are under professional co= ntrol and can't be touched without risks That's why I keep my Rx at 9km in a different QTH. There is a MiniWhip ther= e and a Perseus SDR My plan for VLF is to connect the MiniWhip directly to the sundcard of the = PC. A resistive splitter for the MiniWhip is what I have in mind for that Perseus works down to 10KHz but not lower Once you get "hands on work" with the coils, just imaging how big coil will= I need for VLF gets me sweat :-) But knowing the very good performance of the low bands here at 80m height t= hat will really worth the effort Ideas wellcome ! 73 de Luis EA5DOM ________________________________ De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blackshe= ep.org] En nombre de DK7FC Enviado el: mi=E9rcoles, 13 de abril de 2016 11:44 Para: rsgb_lf_group@blacksheep.org Asunto: Re: LF: Also EA in VLF soon? Hi Luis, VLF, Luis, what about VLF in EA? Would you like to try to receive something from= there? With a small active antenna on the top of the building you could do= some first RX tests to prepare for our first VLF QSO then :-) What do you think? LF is about 10x 'harder' then MF (for the ERP). But with the same ERP you c= an make much more distance on LF. VLF (8270) is about 300x 'harder' then LF! So you can get a first impressio= n... But you would need much less ERP to make the same distance on VLF! :-) 73, Stefan --_000_579355A36AEE9D4FA555C45D556003AB53B685C8servigilantvigi_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Ooops !!  VLF<= /div>
 
This i= s getting too fast, isn't it ? ;-)
 
Living in a 26th floor, my main enemy and at the= same time my best friend is the elevator :-)))
 
The motor variators using three plase 380V are v= ery noisy. Specially from DC to 10MHz
I have been trying to fix this even with th= e help of the lift maintenance company, but it is impossible. I h= ave my antennas just on the roof cover of the
lift motors and controllers cabin. The variators= include all the standar ferrite "filters" but can't fully s= olve the problem. It would probably need a matched
filter, not a standar "plug&play" = but this things are under professional control and can't be touched without= risks
 
That's why I keep my Rx at 9km in a different QT= H. There is a MiniWhip there and a Perseus SDR
My plan for VLF is to connect the MiniWhip direc= tly to the sundcard of the PC. A resistive splitter for the MiniWhip is wha= t I have in mind for that
Perseus works down to 10KHz but not lo= wer
 
Once you get "hands on work" with the coils, just = imaging how big coil will I need for VLF gets me sweat :-)
But knowing the very good performance of the low bands here = at 80m height that will really worth the effort
 
Ideas wellcome !
 
73 de Luis
EA5DOM

De: owner-rsgb_lf_group@blacksheep.= org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de DK7FC
Enviado el: mi=E9rcoles, 13 de abril de 2016 11:44
Para: rsgb_lf_group@blacksheep.org
Asunto: Re: LF: Also EA in VLF soon?

Hi Luis, VLF,

Luis, what about VLF in EA? Would you like to try to receive something from= there? With a small active antenna on the top of the building you could do= some first RX tests to prepare for our first VLF QSO then :-)
What do you think?

LF is about 10x 'harder' then MF (for the ERP). But with the same ERP you c= an make much more distance on LF.

VLF (8270) is about 300x 'harder' then LF! So you can get a first impressio= n... But you would need much less ERP to make the same distance on VLF! :-)=

73, Stefan
--_000_579355A36AEE9D4FA555C45D556003AB53B685C8servigilantvigi_--