Delivered-To: daveyxm@virginmedia.com Received: by 10.67.23.138 with SMTP id ia10csp66207pad; Sun, 29 Sep 2013 08:27:02 -0700 (PDT) X-Received: by 10.180.83.228 with SMTP id t4mr10248382wiy.12.1380468421587; Sun, 29 Sep 2013 08:27:01 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com. [195.171.43.25]) by mx.google.com with ESMTP id hk1si2902814wib.74.1969.12.31.16.00.00; Sun, 29 Sep 2013 08:27:01 -0700 (PDT) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1VQIOl-0005YE-Lp for rs_out_1@blacksheep.org; Sun, 29 Sep 2013 15:55:03 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1VQIOl-0005Y5-35 for rsgb_lf_group@blacksheep.org; Sun, 29 Sep 2013 15:55:03 +0100 Received: from mout.gmx.net ([212.227.15.15]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1VQIOi-0004iQ-I8 for rsgb_lf_group@blacksheep.org; Sun, 29 Sep 2013 15:55:01 +0100 Received: from Clemens0811 ([91.57.89.49]) by mail.gmx.com (mrgmx002) with ESMTPA (Nemesis) id 0Lz3rc-1VvFUf28n2-014FS7 for ; Sun, 29 Sep 2013 16:54:57 +0200 From: "Clemens Paul" To: References: In-Reply-To: Date: Sun, 29 Sep 2013 16:55:00 +0200 Message-ID: MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 11 Thread-Index: Ac69DNO9wJavSRn8QjWVZoMsyYpYTwAEthKA X-MimeOLE: Produced By Microsoft MimeOLE V6.1.7601.17609 X-Provags-ID: V03:K0:nQZNke4t//q2rF+OwuqOwKyAXOAHMXPdh0D00laceNpDh3NfK+7 MwkWuugOTebBfDvFBzHvG7S8UzBUzWynC/08Ledwce60QuUDFpnvW1jTyE0qvU1EAIoWwhw 2XNs791K9ACd/f+/yqe8pNnCuj5xdugk7gy80gInZFqo+kvsjC+VhttDLlAsP+Tfc6TH0hG E4FOG/Mt3nw1HARVbNFqg== X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hi Christian, >But looking to me like an overloaded rx? No. If a direct sampling rx like - in this case - Perseus is overloading you get a completely differently looking spectrum/waterfall screen,an ADC clipping warning message and you hear lots of severely distorted and mixed up signals. [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [212.227.15.15 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (cpaul[at]gmx.net) -0.0 SPF_PASS SPF: sender matches SPF record -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: fc152e7304849b9a177649b85aea9f41 Subject: RE: LF: Soft keying... 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 Status: O X-Status: X-Keywords: X-UID: 1677 Hi Christian, >But looking to me like an overloaded rx? No. If a direct sampling rx like - in this case - Perseus is overloading you get a completely differently looking spectrum/waterfall screen,an ADC clipping warning message and you hear lots of severely distorted and mixed up signals. >But I do a lot of CW on 40 m with an old Siemens E311b as rx. I lovely receiver,I like her SSB sound (my brother has one). I hope the extremely complictated frequency locking system never fails. (Almost) no one will be able to fix it. >Never observed problems with other strong hard keying stations >near my QRG. I believe Jay has made right point: How hard is the hard keying of the signal. >Thus maybe a conventional rx with preselection is the better >choice for working in CW? Preselection is beneficial for any receiver (except wideband monitoring). Well designed digital "IF" filters are superior to even the best "conventional" filters ever made. But for fast CW in my opinion a good agc is the most important factor provided the rest of the rx is fairly decent no matter if it is digital or conventional. 73 Clemens DL4RAJ >-----Original Message----- >From: owner-rsgb_lf_group@blacksheep.org >[mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of C. Groeger >Sent: Sunday, September 29, 2013 2:27 PM >To: rsgb_lf_group@blacksheep.org >Subject: RE: LF: Soft keying... >