Return-Path: Received: from mtain-dd08.r1000.mx.aol.com (mtain-dd08.r1000.mx.aol.com [172.29.64.148]) by air-me03.mail.aol.com (v129.4) with ESMTP id MAILINME033-8baa4cab35b77d; Tue, 05 Oct 2010 10:27:03 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dd08.r1000.mx.aol.com (Internet Inbound) with ESMTP id 3FA7D38034CB7; Tue, 5 Oct 2010 10:11:10 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1P38Cd-0005jj-QY for rs_out_1@blacksheep.org; Tue, 05 Oct 2010 15:09:11 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1P38Cd-0005ja-DI for rsgb_lf_group@blacksheep.org; Tue, 05 Oct 2010 15:09:11 +0100 Received: from mail-gy0-f171.google.com ([209.85.160.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1P38Cb-000746-6E for rsgb_lf_group@blacksheep.org; Tue, 05 Oct 2010 15:09:11 +0100 Received: by gyc15 with SMTP id 15so2385927gyc.16 for ; Tue, 05 Oct 2010 07:09:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=NIJiIk8Ov7+uFsuTv8otCsNnII+4E1ENo8ZGp6W0x38=; b=alDKMghebXxGjMymGNQ5fm9rxPuF2OEsggoXU7iHsGh25wcxrG04Pg1qXMtsJ9+MZp h9991ETB5xXSoVz52AWuqhIur2FuCwRc8GIQjtOtoG0bYcvWbQBWRcijHx5+qkjv/4T6 lNmWD0mBcg675vd6JjfagP4VQQ12YCNYfnNpc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=XhuYzjLG9nGwO4qw/MK3ebdiEPAs9p0C8cK0bdAUahguXsI6AjMVRXX/MyvZ4hsYyF E5365miaQrm4jGlOJj6L8yQ3vSQs1aZpodkNwiSOspAgtgfhkF4FOyg3wcPWARNFKjyY oRTd/s6QoPQkpPQXlkIOafzG5QhINBmAMpxMI= MIME-Version: 1.0 Received: by 10.236.95.47 with SMTP id o35mr10650272yhf.99.1286287742582; Tue, 05 Oct 2010 07:09:02 -0700 (PDT) Received: by 10.229.217.77 with HTTP; Tue, 5 Oct 2010 07:09:01 -0700 (PDT) In-Reply-To: <242345.444.qm@web111918.mail.gq1.yahoo.com> References: <4CA9BDE0.4000601@iup.uni-heidelberg.de> <646839.20132.qm@web111910.mail.gq1.yahoo.com> <4CAA4521.6070301@iup.uni-heidelberg.de> <242345.444.qm@web111918.mail.gq1.yahoo.com> Date: Tue, 5 Oct 2010 10:09:01 -0400 Message-ID: From: Warren Ziegler To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: VLF: Inspire VLF-3 receiver Content-Type: multipart/alternative; boundary=00235440bd41f9bea40491df334b X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_20_30, HTML_FONTCOLOR_UNSAFE,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-AUTHENTICATION: mail_rly_antispam_dkim-m256.2 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d40944cab31fd707d X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) --00235440bd41f9bea40491df334b Content-Type: text/plain; charset=ISO-8859-1 Daniele, The Inspire kit is a broadband high gain audio amplifier with a very high input impedance - generically its a 'whistler receiver'. Whistler receivers like Inspire are good for listening to whistlers, tweeks, dawn chorus etc but it would be completely useless for listening to amateur VLF experiments - its broadband, has no 'bfo' to detect a carrier and would be difficult to interface to a sound card. -- 73 Warren K2ORS WD2XGJ WD2XSH/23 WE2XEB/2 WE2XGR/1 On Tue, Oct 5, 2010 at 4:43 AM, Daniele Tincani wrote: > Hi VLF, > > any opinions about the Inspire VLF-3 receiver kit? > http://theinspireproject.org/uploads/PDF/Theory_of_Operations.pdf > Thank you in advance for your feedbacks. > > Regards > Daniele > > --00235440bd41f9bea40491df334b Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Daniele,
=A0=A0 The Inspire kit is a broadband high gain audio amplifie= r with a very high input impedance - generically its a 'whistler recei= ver'.
Whistler receivers like Inspire are good for listening to whi= stlers, tweeks, dawn chorus etc but it would be completely useless for lis= tening to amateur VLF experiments - its broadband, has no 'bfo' to= detect a carrier and would be difficult to interface to a sound card.


--
73 Warren K2ORS
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 WD2XGJ=
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 WD2XSH/23
=A0 =A0 =A0 =A0 =A0 =A0= =A0 =A0 WE2XEB/2
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 WE2XGR/1

=A0
On Tue, Oct 5, 2010 at 4:43 AM, Daniele= Tincani <danieletincani@yahoo.com> wrote:
Hi VLF= ,
=A0
any opinions about the Inspire VLF-3 receiver kit?
Thank you in advance for your feedbacks.
=A0
Regards
Daniele




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