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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: <823BBA7099F84CE9924D2D9E7E379C05@DELL4> Content-Language: en-US X-Provags-ID: V03:K1:Iiaq2c+HuPuiw+uUXcXn/IP10iujAluMxVvKqOYIPOOsV/pDKpT kPDAvPxPjU7njOEF4eJWmyrqAnz5B1Jqbwdi4lvJZcb3hbYSKumKyZ+booh3ThTQEjI+lYp 31kP/eP10OXPowUU7tFuwehKjKkU/A2Uh5b9QcgHcG0n7aWKgGGGw0pFnbmopeHhq0GYqva aO6Zw0wNSec+djUJybFow== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:CR+OVFllEGA=:6IAGuq+2iYrRuQku5GROtE o4THhv4ll0dXNy7wa/eLD6h07Gii5koxAhYEcxJVprvoeqpI+uru7kyIBJtWKd2btXNO6ptj/ OxjfJNTExyo2r151v+s6LA/WWkH7DVDs+zl/+wjMva1rororO4j576ZvMYdBd3jvguei7q0kB 6KrroOytQkhNurPeLU7vF1J3TSRwK6hh29detOvk5aJH766tudSBm5urlRFNikMu73beZ2pC3 +yMeV86IhSKPYbWyvoylvQaKgM/Dv7PiX+PcJIpQbhk5HhBhyk8M7QieX3LwMNLlfDB+gy3+i yXkLR7mRblrsQiU155O7vOPd8NxOBHRpKkDGMYwqdZqeeVyvEaueNI2M2GjEC0Dzda0/6ZGUp nVpyhQoQyh2Kaaj3626wLNzAtiWdJNK09aTrmrwYAJyazMwB8sqmNkKPLDM/vyCahuvDAJrX9 7ID3rTQpGdYNp+imY7dH9IlnSgEqReWcCVUXIktT5eAZNvgRch/bJ/SUNUa5B6fHoqiXMVl5G v4oIux9wCyJUYFvSTwM1nXNlMCgOtFFRDz/tS0JZHUzWbKwcG3v3gxWgNY5BklrxvQDLnhqLG s5FMFyJJZq+ei7xNsuzqTh/UV7ETKH4UY9JiEdRb5BiRHzpiJXPtULIkucjNvfpwvth3ppZqm xbvEj4cmzHiTzV2+mmbkD2+c8zH7DkiidB+GW6YPNiEsX8DTIo/bV7s2e08iV9A/KGNX4KPl8 5AB9GZoxz/Rz1vYPrZYhskmMQI5D9xfopp8oS20CfhhtkmmAneJw3qZzuJKq40GDE+bDSmHGd 2Rg/hFftYD0eonANOAuZJUJz0iaeeIG51+F4Fg1eA5dsTVGETqx8N70SgkFa08KweJZFvJozk C96VXcslXjKq+qWLUdPqESZk0SDctNfwLlSGuaYvuptMbpcM2Vuq2mqOm2czYeRmyEBm5QDyx NNTHAUHo5gw== 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. 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Content preview: Jay, The U3S schematic is in the assembly manual: http://qrp-labs.com/images/ultimate3s/assembly_u3s_r3_lt.pdf 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 [74.208.4.194 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record X-Scan-Signature: 4b5b5ebe37a4c4f430f59bc35c1947b0 Subject: Re: LF: Class D current spikes Content-Type: text/plain; charset=utf-8 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 Jay, The U3S schematic is in the assembly manual: http://qrp-labs.com/images/ultimate3s/assembly_u3s_r3_lt.pdf 73, Paul On 2/26/19 2:12 PM, jrusgrove@comcast.net wrote: > Anyone have a U3S schematic handy? Link to same? > > Jay W1VD > > ----- Original Message ----- > From: "N1BUG" > To: > Sent: Tuesday, February 26, 2019 2:01 PM > Subject: Re: LF: Class D current spikes > > >> Eric, >> >> I I have always run my U3S through the W1VD doubler. Never had any >> problems with blown FETs with that setup, even when I tested at 1 kW >> under Part 5 license. There is apparently something different about >> the U3S at end of RF envelope. >> >> 73, >> Paul >> >> >> On 2/26/19 12:52 PM, Chris Wilson wrote: >>> >>> >>> Hello Eric, >>> >>> No, I have always run the U3S in X2 mode as far as I can remember. No >>> doubler, no squarer, just straight out of CLK0 to Pin 3 of the 74F74. >>> And no issues at all. Thanks. BTW, I really admire your old gear on >>> your web site, awesome build standards and so nice to look at! >>> >>> Tuesday, February 26, 2019, 5:35:10 PM, you wrote: >>> >>>> Just to clarify... did you say previously that the U3S also worked fine >>>> running at 1x and feeding a doubler, squarer, etc. also?