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 w6ADbtDG030516 for ; Tue, 10 Jul 2018 15:37:57 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1fcslk-00025T-9V for rs_out_1@blacksheep.org; Tue, 10 Jul 2018 14:33:28 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1fcslk-00025K-06 for rsgb_lf_group@blacksheep.org; Tue, 10 Jul 2018 14:33:28 +0100 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1fcsli-0001IF-FS for rsgb_lf_group@blacksheep.org; Tue, 10 Jul 2018 14:33:26 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 97D0F20FEB for ; Tue, 10 Jul 2018 15:33:25 +0200 (CEST) X-DKIM-Result: Domain=posteo.de Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.de; s=2017; t=1531229605; bh=BJ/NvjUD2OQ5lVg5QuMYbsdTaQFfhOj3PZJizbGhsNw=; h=Date:From:To:Subject:From; b=oHWdagPnfvCEejJ3bQgZquEMDQZXsOJSLbNrUY0fRb+HnH3T32Ow/pPMSiDogYWAj 7Fyg5pRcrMdOEnIhZc9hwwaKhU1D+GtyuVQ9KwnvHmb/mw8GIj+M+GpqYhHBmm1b3R pOrm2+tYzIq8ebd5Br3Z9g1TqNlsa1RFVHhXJls9kMI6nbEmQAARsBo8LI+hT7335n kXksjiX4XF646QiJeYHlEG9h3japNjup5kL3yk/M4/odJJWB45/cXyhlNkqUvtcFIV ExzzuFJ1OKZqlfxApWty1dukXTpmpT7IlMGp4gLYLqTmPLuhN/yk/Lni6Nvm48hlq8 4JE6kngm5dkzg== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 41Q3790Zs9z10HJ for ; Tue, 10 Jul 2018 15:33:25 +0200 (CEST) Message-ID: <5B44B5A4.6040401@posteo.de> Date: Tue, 10 Jul 2018 15:33:24 +0200 From: DK7FC User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <09a39510-37a4-06dc-5fc8-05fe24d4e681@n1bug.com> <5B44A64A.1070307@posteo.de> <3d737f55-9e30-1c39-f34c-ea6f3c1c06af@n1bug.com> In-Reply-To: <3d737f55-9e30-1c39-f34c-ea6f3c1c06af@n1bug.com> X-Spam-Score: -2.3 (--) 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: Hi Paul, Am 10.07.2018 15:05, schrieb N1BUG: > I am thinking they only limit peak voltage to 0.6V? If that's right, > then I think this is about +5 dBm, perhaps still enough to damage a > receiver. > Rather 1V but that should not be critical in an active E field antenna front end. [...] Content analysis details: (-2.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [185.67.36.66 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 0a4643e586472c13187d293ec5d096c2 Subject: Re: LF: Receiver protection Content-Type: text/plain; charset=UTF-8; format=flowed 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 Hi Paul, Am 10.07.2018 15:05, schrieb N1BUG: > I am thinking they only limit peak voltage to 0.6V? If that's right, > then I think this is about +5 dBm, perhaps still enough to damage a > receiver. > Rather 1V but that should not be critical in an active E field antenna front end. I suggest to discuss along a concrete schematic that you could present along with the question(s). > I need to stop being lazy. ;-) > Oh oh, i know what you mean. Good point :-) I can observe the same behaviour here. Sitting in front of the monitor, watching grabbers, watching the WSPR map, programming some Linux stuff, playing with SpecLab can be quite comfortable and relaxing. When looking back, 10 years ago i have been more spontaneous in doing portable experiments. But can this tendency be stopped or is it hopeless? It could be helpful to analyse the causes instead of 'fighting' against oneselve. Show us your schematic, then we can contine... 73, Stefan