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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: Hard keying also helps crack DX pileups. Jay W1VD WD2XNS WE2XGR/2 WG2XRS/2 ----- Original Message ----- From: "Stefan Schäfer" To: Sent: Saturday, September 28, 2013 9:01 AM Subject: Re: LF: Soft keying... [...] Content analysis details: (-2.2 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [76.96.62.64 listed in list.dnswl.org] 0.2 STOX_REPLY_TYPE STOX_REPLY_TYPE 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 -2.4 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: d7907c3bf895ca41e0bedc3fa074f0d4 Subject: Re: LF: Soft keying... Content-Type: text/plain; format=flowed; charset="utf-8"; reply-type=original 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: 2974 Hard keying also helps crack DX pileups. Jay W1VD WD2XNS WE2XGR/2 WG2XRS/2 ----- Original Message ----- From: "Stefan Schäfer" To: Sent: Saturday, September 28, 2013 9:01 AM Subject: Re: LF: Soft keying... Hi Christian, Yes i know. There are even special circuits to improve the shape of the CW slope, giving better readability. See attachment. 73, Stefan 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 >> >>