Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id w81Cv7n3005613 for ; Sat, 1 Sep 2018 14:57:08 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1fw5Fx-0000ma-6r for rs_out_1@blacksheep.org; Sat, 01 Sep 2018 13:44:01 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1fw5Fv-0000mR-32 for rsgb_lf_group@blacksheep.org; Sat, 01 Sep 2018 13:43:59 +0100 Received: from lb1-smtp-cloud9.xs4all.net ([194.109.24.22]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1fw5Ft-0008L8-Hf for rsgb_lf_group@blacksheep.org; Sat, 01 Sep 2018 13:43:57 +0100 Received: from [192.168.178.20] ([83.162.220.82]) by smtp-cloud9.xs4all.net with ESMTP id w5FofAb2iZvhiw5FpfZzFW; Sat, 01 Sep 2018 14:43:54 +0200 From: "Roelof Bakker" To: rsgb_lf_group@blacksheep.org Date: Sat, 01 Sep 2018 14:43:52 +0200 MIME-Version: 1.0 Message-ID: <5B8A8988.27566.15F28D9@roelof.ndb.demon.nl> In-reply-to: References: X-mailer: Pegasus Mail for Windows (4.72.572) Content-description: Mail message body X-CMAE-Envelope: MS4wfMTC55RaYSzIluJYQi8BEuCQMu7kv8elf3lfbPxgoZzSywjnf43zqyCMrGV89rtRb5F/nPKdwk9+2H+vCVckNfDvkOj/H+LB5ijeeQWbJJHt5ZND3/B4 L5KodZ0eppcPj4G+dPQguMDlTrSLdeDExlbDmWxUTbtRzA/bHNY184K9PpYfeTlf8d192y4rAN/QUA== X-Spam-Score: -0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Hello Andy, I have used a RTL-SDR.Com V3 dongle running in direct sampling mode under SDR#. You should be aware that it lacks sensitivity at LF and is prone to overload from Medium Wave broadcast stations. A tuneable pre-amplifier will take care of these problems. [...] Content analysis details: (-0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [194.109.24.22 listed in list.dnswl.org] -0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [194.109.24.22 listed in wl.mailspike.net] -0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-Scan-Signature: cc2e5baae40f8f7a09b47e6877ef0bfb Subject: LF: Re: [rsgb_lf_group] SDR dongles and ferrite rods / loops ? Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none 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 Hello Andy, I have used a RTL-SDR.Com V3 dongle running in direct sampling mode under SDR#. You should be aware that it lacks sensitivity at LF and is prone to overload from Medium Wave broadcast stations. A tuneable pre-amplifier will take care of these problems. Though only 8 bit, with correct gain distribution results are excellent when using a suitable antenna. I have used it with a mini-whip and also with a triangle 10 meter circumference 'large aperture' loop, feeding a LZ1AQ amplifier. 73, Roelof Bakker, pa0rdt