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[82.70.254.222]) by smtp.gmail.com with ESMTPSA id 11-v6sm1270059wms.24.2018.11.21.05.40.23 (version=TLS1 cipher=AES128-SHA bits=128/128); Wed, 21 Nov 2018 05:40:23 -0800 (PST) Date: Wed, 21 Nov 2018 13:40:22 +0000 From: Chris Wilson X-Priority: 3 (Normal) Message-ID: <1058403118.20181121134022@gmail.com> To: DK7FC In-Reply-To: <5BF556E7.2010606@posteo.de> References: <6DB8451D7F3D3947A5918808A59621EA14E200EB@servigilant.vigilant.local> <5BF556E7.2010606@posteo.de> MIME-Version: 1.0 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 DK7FC, Is the H bridge amp a published design Stefan, and if not, would you consider posting it please? :) Wednesday, November 21, 2018, 1:00:23 PM, you wrote: 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 [2a00:1450:4864:20:0:0:0:429 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (dead.fets[at]gmail.com) 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: f38d515a9cad1e977fcfe251941a8120 Subject: Re: LF: On air again in LF WSPR-15 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=0.8 required=5.0 tests=PRIORITY_NO_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 Hello DK7FC, Is the H bridge amp a published design Stefan, and if not, would you consider posting it please? :) Wednesday, November 21, 2018, 1:00:23 PM, you wrote: > > Hi Luis, > > thanks for the nice readably summary report. > Oh yes it was an impressing night and good resultsfor us. I saw > you were decoded at SM2DJK which is a good distance, and R7NT was > seen at 2E0ILY. There are more challenges like the path from EB8ARZ > to SM2DJK, that would be about 4000 km and still inside the continent. > I also thought about LU8YD but also about PY2PLL. > EB8ARZ has the perfect RX location, so if LU8YD would transmit on > LF, like in the past, it could work in WSPR-15 just before the sunrise in EA8. > > About the MOSFET discussion, i'm using IRFP460A types in H bridge > configurations from SLF to MF, i.e. the full spectrum :-) Bridge > voltage is 320 V DC, the rectified mains voltage. > With the currently pair (4 pcs) of FETs i'm TXing since hundreds > of hours on LF without problems. They are of course in TO-247 design > and cost just 2.2 EUR, so a BANG/year wouldn't really hurt. > > 73, Stefan -- Best regards, Chris mailto:dead.fets@gmail.com