Return-Path: Received: from mtain-de06.r1000.mx.aol.com (mtain-de06.r1000.mx.aol.com [172.29.64.206]) by air-db05.mail.aol.com (v128.3) with ESMTP id MAILINDB053-86474bd5ff693a; Mon, 26 Apr 2010 17:02:33 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-de06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 9C1E1380000DD; Mon, 26 Apr 2010 17:02:31 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1O6VQr-0006VN-Tz for rs_out_1@blacksheep.org; Mon, 26 Apr 2010 22:01:33 +0100 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1O6VQr-0006VE-Ca for rsgb_lf_group@blacksheep.org; Mon, 26 Apr 2010 22:01:33 +0100 Received: from [85.33.2.30] (helo=smtp-out30.alice.it) by relay2.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1O6VQj-00060K-6G for rsgb_lf_group@blacksheep.org; Mon, 26 Apr 2010 22:01:33 +0100 Received: from FBCMMO05.fbc.local ([192.168.184.136]) by smtp-out30.alice.it with Microsoft SMTPSVC(6.0.3790.3959); Mon, 26 Apr 2010 23:00:59 +0200 Received: from FBCMCL01B03.fbc.local ([192.168.69.84]) by FBCMMO05.fbc.local with Microsoft SMTPSVC(6.0.3790.3959); Mon, 26 Apr 2010 23:00:28 +0200 Received: from PCCasa ([87.13.63.187]) by FBCMCL01B03.fbc.local with Microsoft SMTPSVC(6.0.3790.3959); Mon, 26 Apr 2010 23:00:27 +0200 Message-ID: From: "Daniele Tincani" To: References: <4EB4F8217FCC42CAB07AE666A6AB07B8@AGB> <4BD5F358.8040508@freenet.de> In-Reply-To: <4BD5F358.8040508@freenet.de> Date: Mon, 26 Apr 2010 22:59:40 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18005 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18005 X-OriginalArrivalTime: 26 Apr 2010 21:00:27.0566 (UTC) FILETIME=[7F7A04E0:01CAE583] X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Probably not a new question... Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.1 required=5.0 tests=MISSING_OUTLOOK_NAME 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: 3039ac1d40ce4bd5ff67570a X-AOL-IP: 193.82.116.20 Content-Transfer-Encoding: quoted-printable Hi Wolf, Marco, LF, Marco below cited some "classic" receivers (Racal 1792, Eddystone 1650= ,=20 Rohde&Schwarz EK081...and I imagine some Watkins-Johnson's could join= the=20 group) and Perseus. Despite of the fact that all of these are some dB'= s=20 higher than my budget, I'm interested in your opinion about how best= SDR's=20 compare with "classics"...Probably I'm wrong, but I believed that top-= rated=20 radio's like Racal, Eddystone, R&S, W-J, etc. distinghished over the= others=20 because of their superior construction, even from a mechanical point= of view=20 (no wide-band circuits, lots of metal screens, etc.). How is this leve= l of=20 quality achieved in modern SDR's? Cheers D. ----- Original Message -----=20 From: "Wolfgang B=FCscher" To: Sent: Monday, April 26, 2010 10:11 PM Subject: Re: LF: Probably not a new question... > Beware, the Perseus doesn't work at a few kHz; it's nice for LF (whe= re I > use it too), but not for the lower VLF range. > The reason is, I guess, the input filter which has an "L" between th= e > input and ground (unlike SDR-IQ) . > > Cheers, > Wolf . > > Marco IK1ODO schrieb: >> At 20.55 26/04/2010, you wrote: >>> You may be better building a LF convertor ? >>> >>> G .. >> >> I agree... probably a better choice, if you already have a _decent_= HF >> receiver. >> If not... consider buying a Perseus, but the price is 4,4 dB higher >> than your target :-) >> Otherwise, Racal 1792, Eddystone 1650, Rohde&Schwarz EK081, all in= the >> 500-1500 Euro range. >> I don't consider amteur radio receivers to be good radios, expecial= ly >> at LF. >> >> 73 - Marco IK1ODO > > ----------------------------------------------------------------------= ---------- Nessun virus nel messaggio in arrivo. Controllato da AVG - www.avg.com Versione: 9.0.814 / Database dei virus: 271.1.1/2835 - Data di rilasc= io:=20 04/25/10 20:31:00