Return-Path: Received: from mtain-mg03.r1000.mx.aol.com (mtain-mg03.r1000.mx.aol.com [172.29.96.203]) by air-mc02.mail.aol.com (v127_r1.1) with ESMTP id MAILINMC023-a8d54b830ca868; Mon, 22 Feb 2010 18:00:56 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mg03.r1000.mx.aol.com (Internet Inbound) with ESMTP id A6FE43800009A; Mon, 22 Feb 2010 18:00:54 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NjhG2-0006Ik-Oq for rs_out_1@blacksheep.org; Mon, 22 Feb 2010 23:00:06 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NjhG2-0006Ib-Bo for rsgb_lf_group@blacksheep.org; Mon, 22 Feb 2010 23:00:06 +0000 Received: from cavuit02.kulnet.kuleuven.be ([134.58.240.44]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NjhG0-0006Sy-L7 for rsgb_lf_group@blacksheep.org; Mon, 22 Feb 2010 23:00:06 +0000 Received: from smtps01.kuleuven.be (smtpshost01.kulnet.kuleuven.be [134.58.240.74]) by cavuit02.kulnet.kuleuven.be (Postfix) with ESMTP id C6E9751C001 for ; Mon, 22 Feb 2010 23:59:54 +0100 (CET) Received: from ICTS-S-HUB-N4.luna.kuleuven.be (icts-s-hub-n4.luna.kuleuven.be [10.112.9.14]) by smtps01.kuleuven.be (Postfix) with ESMTP id 9D8BC31E703 for ; Mon, 22 Feb 2010 23:59:54 +0100 (CET) Received: from ICTS-S-EXC2-CA.luna.kuleuven.be ([10.112.11.13]) by ICTS-S-HUB-N4.luna.kuleuven.be ([10.112.9.14]) with mapi; Mon, 22 Feb 2010 23:59:54 +0100 X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe To: "rsgb_lf_group@blacksheep.org" Date: Mon, 22 Feb 2010 23:59:54 +0100 Thread-Topic: LF: VLF_8.79 kHz Thread-Index: Acqz3B2XQhA+qwXMQhis8g8ptGhQPwAKsdaFAAJ2eR8= Message-ID: References: <32098189.1842344.1266827344324.JavaMail.fmail@mwmweb080> <38A51B74B884D74083D7950AD0DD85E82A1B04@File-Server-HST.hst.e-technik.tu-darmstadt.de> ,<38A51B74B884D74083D7950AD0DD85E82A1B06@File-Server-HST.hst.e-technik.tu-darmstadt.de> In-Reply-To: <38A51B74B884D74083D7950AD0DD85E82A1B06@File-Server-HST.hst.e-technik.tu-darmstadt.de> Accept-Language: nl-NL, nl-BE Content-Language: nl-BE X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: nl-NL, nl-BE MIME-Version: 1.0 X-KULeuven-Information: Katholieke Universiteit Leuven X-KULeuven-Scanned: Found to be clean X-KULeuven-Envelope-From: rik.strobbe@fys.kuleuven.be X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: RE: LF: VLF_8.79 kHz Content-Type: multipart/alternative; boundary="_000_BF4A524700075746A6467658DFC7102C1286AD4069ICTSSEXC2CAlu_" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,HTML_MESSAGE, TO_ADDRESS_EQ_REAL 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-sid: 3039ac1d60cb4b830ca6365a X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) --_000_BF4A524700075746A6467658DFC7102C1286AD4069ICTSSEXC2CAlu_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable >But what about that WSPR mode, everyone was using before some weeks? Woul= dn't that be a nice tool to try >what's possible, for a first step? Stefan, I just did a simple test: I took 2 old LW ferrite antennas and brought them to resonance at 1.5kHz= with a bunch of capacitors. One ferrite antenna was used as TX antenna, fed by the 5W active speaker= of the main PC in the shack transmitting the WSPR audio signal. The second ferrite antenna served as RX antenna connected to the mic input= of my notebook, acting as receiver in the living room (a surprised look= of the XYL, but she is meanwhile used to my strange behaviour). Solid copy in WSPR, over a distance of 15m. OK, it's just a very loose couple transformer. But it works fine and based= on the signal strength (through a couple of walls) there is more in it th= an 15m. 73, Rik ON7YD --_000_BF4A524700075746A6467658DFC7102C1286AD4069ICTSSEXC2CAlu_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
>But what about that= WSPR mode, everyone was using before some weeks? Wouldn't that be a nice= tool to try >what's possible, for a first step?
 
Stefan,
 
I just did a simple test:=
I took 2 old LW ferrite= antennas and brought them to resonance at 1.5kHz with a bunch of capacito= rs.
One ferrite antenna was= used as TX antenna, fed by the 5W active speaker of the main PC in the sh= ack transmitting the WSPR audio signal.
The second ferrite antenn= a served as RX antenna connected to the mic input of my notebook= , acting as receiver in the living room (a surprised look of the XYL,= but she is meanwhile used to my strange behaviour).
Solid copy in WSPR, = over a distance of 15m.
OK, it's just a very loos= e couple transformer. But it works fine and based on the signal strength= (through a couple of walls) there is more in it than 15m.
 
73, Rik  ON7YD
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