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[82.70.254.222]) by smtp.gmail.com with ESMTPSA id m35-v6sm4578575wrm.59.2018.04.19.03.44.47 (version=TLS1 cipher=AES128-SHA bits=128/128); Thu, 19 Apr 2018 03:44:48 -0700 (PDT) Date: Thu, 19 Apr 2018 11:44:46 +0100 From: Chris Wilson X-Priority: 3 (Normal) Message-ID: <10010496583.20180419114446@gmail.com> To: ik1hgi Qrss Qrpp In-Reply-To: References: <953519455.20180416112457@gmail.com> <71940ee0-587b-5f59-a709-bda5ca93d45a@n1bug.com> <586779889.20180416143246@gmail.com> 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 the administrator of that system for details. Content preview: 19th April 2018 Hello Ricardo, Thanks for the link, that's almost exactly what i am doing here. I have experimeted and found a 5 watt, 12 volt automotive "festoon" bulb as used in many ineterior lights in older cars works well as a glitch indicator. The long spacing between filament posts means it can't arc over on the voltages involved and the filament blows with no harm to the FET's. So far no glitches have been revealed but I will test a while longer I think ;) [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 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: 896f9ee4f10c5db37812c155e804756d Subject: Re: LF: Antenna change over relay testing question Content-Type: text/plain; charset=utf-8 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.9 required=5.0 tests=MAILTO_TO_SPAM_ADDR, 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 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by klubnl.pl id w3JAo84b002221 19th April 2018 Hello Ricardo, Thanks for the link, that's almost exactly what i am doing here. I have experimeted and found a 5 watt, 12 volt automotive "festoon" bulb as used in many ineterior lights in older cars works well as a glitch indicator. The long spacing between filament posts means it can't arc over on the voltages involved and the filament blows with no harm to the FET's. So far no glitches have been revealed but I will test a while longer I think ;) Tuesday, April 17, 2018, 8:00:41 AM, you wrote: > Hello Gris and for some time I use this system with my U3-S for the > RXTX you want to see on my wsb pages > http://www.qsl.net/ik1hgi/472khz/rele-tx-rx.htm  > Helo 73 ik1hgi Antonio > 2018-04-17 2:50 GMT+02:00 Riccardo Zoli : > Hi Chris, > Considering that you're handling a lot of power, all you need is a simple relay sequencer. > Take a look here: > https://www.dropbox.com/s/xmwan9kuitu1l75/20180417_010251.jpg?dl=0 > A 150-200ms delay step seems adequate. > Obviously, K1 is your Russian relay and K2 is your "safety relay". > As Paul said, you can also add a pair of 1N4148 connected in anti-parallel on RX input. > All the best > 73 de Riccardo IW4DXW -- Best regards, Chris mailto:dead.fets@gmail.com