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[195.171.43.25]) by mx.google.com with ESMTP id gj11si2661477wic.66.1969.12.31.16.00.00; Sun, 29 Sep 2013 05:12:01 -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; dkim=pass (test mode) header.i=@comcast.net Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1VQFU0-0004qA-Fr for rs_out_1@blacksheep.org; Sun, 29 Sep 2013 12:48:16 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1VQFTz-0004q1-VA for rsgb_lf_group@blacksheep.org; Sun, 29 Sep 2013 12:48:15 +0100 Received: from qmta01.westchester.pa.mail.comcast.net ([76.96.62.16]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1VQFTx-0003f7-Kx for rsgb_lf_group@blacksheep.org; Sun, 29 Sep 2013 12:48:14 +0100 Received: from omta16.westchester.pa.mail.comcast.net ([76.96.62.88]) by qmta01.westchester.pa.mail.comcast.net with comcast id Wzia1m0041uE5Es51zoBVU; Sun, 29 Sep 2013 11:48:11 +0000 Received: from JAYDELL ([71.234.119.9]) by omta16.westchester.pa.mail.comcast.net with comcast id WzoB1m00D0CFS1j3czoBaP; Sun, 29 Sep 2013 11:48:11 +0000 Message-ID: <005501cebd09$c6234a80$6401a8c0@JAYDELL> From: To: References: <23ht99dnd852tktkm8dwyomi.1380368630043@email.android.com> <5247F59D.7030702@freenet.de> Date: Sun, 29 Sep 2013 07:48:11 -0400 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20121106; t=1380455291; bh=AK2SEhg0tZ7WW24fSbcmxT2OtRhDAV33TqXH+GiOkZ4=; h=Received:Received:Message-ID:From:To:Subject:Date:MIME-Version: Content-Type; b=SIzXkWg908aQL/cSCfADmBKOsHg4d0s+Gop6DxXFsoGCSVxUo8F39OKrccEY5DOGr CCrokJv9D3dVXxAk7hr/4JG+7D1B3bCYB0ODCToMVf1CUmQI0LVRlLczODjH4/zudT Ab29E1KmM9medVczwSx8qGwDgNmjrvVYtQfd2uP4Ol3FfeS9iv+R+FbYYnTAcB8+NO vKMPIltlYpxDOUhqS3zdC0ZMsasSw6S/WJKm+c7QCWZQ2b7LC7y6YrP+D6fVKl+LiT hDVmobU2eXOy0+g4Cmfnbiaug1OEK1vU4YGU5P92BPGfa5ywx8QInb9+iROQipcPHn EViDF12C3iZ/g== X-Spam-Score: -0.6 (/) 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: Keying can be made sufficiently hard without generating clicks. Instead of the old 5 msec rise time 'rule' make adjusts to the waveform so that the edges are still rounded ... just not too much so. Listen locally on a suitably attenuated receiver while making adjustments. [...] Content analysis details: (-0.6 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [76.96.62.16 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (jrusgrove[at]comcast.net) -0.0 SPF_PASS SPF: sender matches SPF record -0.7 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: 8556389a5ea14fbbf9b9d801ab70c592 Subject: Re: LF: Soft keying... Content-Type: text/plain; format=flowed; charset="UTF-8"; reply-type=response Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=CLICK_BELOW,NO_REAL_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 Status: O X-Status: X-Keywords: X-UID: 2976 Keying can be made sufficiently hard without generating clicks. Instead of the old 5 msec rise time 'rule' make adjusts to the waveform so that the edges are still rounded ... just not too much so. Listen locally on a suitably attenuated receiver while making adjustments. Jay W1VD WD2XNS WE2XGR/2 WG2XRS/2 ----- Original Message ----- From: "wolf_dl4yhf" To: Sent: Sunday, September 29, 2013 5:40 AM Subject: Re: LF: Soft keying... > Pleasant to the ears of some maybe, and very annoying to the neighbours. > Please, if you have the choice, do NOT use hard-keying whereever possible. > > 73, > Wolf (who thought about returning to MF... up to now..) > > Am 28.09.2013 13:43, schrieb C. Groeger: >> BTW, Stefan, >> under difficult conds with low signal strength (which is the case on 630 m) hard keying greatly >> enhances readability of your CW ! >> >> And if you like QRQ, hard keyed CW is really essential for good copy! >> You can check that easily on Hf, QRQ op's use hard keying... >> >> 73, df5qg >> >> >> Christian Groeger >> >> Stefan Schäfer schrieb: >> >>> Am 27.09.2013 20:51, schrieb Clemens Paul: >>>> [...] >>>> If you are seriously interested in generating a key click free CW signal,there's an >>>> article about that >>>> in QST 5/97 and 6/97 dealing with class E amps which would also apply to class D amps. >>>> >>>> 73 >>>> Clemens >>>> DL4RAJ >>> Yes. >>> Or that one: http://www.classeradio.com/classh.htm >>> >>> I even built something similar some months ago. It is possible to adjust >>> the power from 0...> 1 kW with a small potentiometer. Somehow >>> fascinating. It was intended to send slow hell on the LF PA, not key >>> click free CW. The project is maybe 90% finished but then other projects >>> got priority. Image: >>> https://dl.dropboxusercontent.com/u/19882028/LF/20130927_211117.jpg You >>> can read the names of some ICs :-) >>> >>> BTW when will your MF PA be finished? >>> >>> 73, Stefan/DK7FC >>> > >