Return-Path: X-Spam-DCC: paranoid 1233; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u2AKWXdE006065 for ; Thu, 10 Mar 2016 21:32:33 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ae7BZ-0005ry-38 for rs_out_1@blacksheep.org; Thu, 10 Mar 2016 20:27:53 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ae7BY-0005rp-Dn for rsgb_lf_group@blacksheep.org; Thu, 10 Mar 2016 20:27:52 +0000 Received: from mail-oi0-x22a.google.com ([2607:f8b0:4003:c06::22a]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.86) (envelope-from <9h9mhrlaw@gmail.com>) id 1ae7BW-0001kZ-Kk for rsgb_lf_group@blacksheep.org; Thu, 10 Mar 2016 20:27:51 +0000 Received: by mail-oi0-x22a.google.com with SMTP id d205so70372039oia.0 for ; Thu, 10 Mar 2016 12:27:50 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to; bh=7/d5a2jTvgxM3edC43/tRetZUdagt/xge72mWQ3+RsE=; b=H3FBm/ki92qdt8wQLREJgxsXZIeCc1UpN4GUuU9u8qQi/MplshBBfmfugy252gcIZI pGFe66ZdSx5G7q0BMUp/V/4+i/x0Eni3Hhpkcoizec7mywoCTbDhld6Al3p7ujJpx+NL eJG3m2kWeDw8WNMjcVQcXkxSKqD6ULXZb4mCSOjuTTDbTVpgqkkVaO9t2bx38lC07rGl U4uU/sw5U3eEBkn/Fx24meUClsOXbw4permp4386U5v1vfxT+7tWfsgHzasxqMpc/T6L bEzE/HXTYfZyyicPdX+2IlDzzih2iOPHwJBCzdSUsxnBtc6Prn2wH09mM41aI+GOAFlm ku8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to; bh=7/d5a2jTvgxM3edC43/tRetZUdagt/xge72mWQ3+RsE=; b=HdZcxr8jeq0Df0gQBr78qaohUKwKk2gJekuZavAK5VNjqkcOACrmCjDx1QDbim527Q QwyUWA9uj2oQpHoPCSfQ2FRD+A5Fv9xbEaYyt3Jdia+s7NwJUP+qwhy8OJpTx2FZjG8U /8TtH0Y9RLFn+pPDfKePVskCI5a0u75UQWrTtkhF0lgmXEtnHx9ozK+kg+YCWt1CR7PQ wck2B3kQlbE1DVAEIRTlxnaTNC4O0ReZlSI1grNSoA0J4X69HGjX7fzHSx9RYB+IrF4L Bh+ED8q3vB9KH6bW7MfgkbiM4/US55cETdO0gAWW5R8c2bYrRltDzT0F+JjM8rrXTMvO nHfg== X-Gm-Message-State: AD7BkJKNvNBglhKDrvJwg13IZYUCsFAqXUSYNAOfgNGIy6m0heyIpOYbg6nDuygdqD+UWBG+KnEUit9Rx9WeKg== MIME-Version: 1.0 X-Received: by 10.202.190.87 with SMTP id o84mr3342163oif.109.1457641668333; Thu, 10 Mar 2016 12:27:48 -0800 (PST) Received: by 10.76.76.72 with HTTP; Thu, 10 Mar 2016 12:27:48 -0800 (PST) In-Reply-To: <56E1CA13.9090805@t-online.de> References: <56E18E66.7010809@t-online.de> <56E1CA13.9090805@t-online.de> Date: Thu, 10 Mar 2016 21:27:48 +0100 Message-ID: From: Lawrence Galea <9h9mhrlaw@gmail.com> To: rsgb_lf_group@blacksheep.org X-Scan-Signature: fc152e7304849b9a177649b85aea9f41 Subject: Re: LF: Touch switched lamp influenced by lf/mf transmission Content-Type: text/plain; charset=UTF-8 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 X-Scanned-By: MIMEDefang 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 7290 Chris, If the neighbour accepts and the lamp uses an earth and there is space inside the lamp you can try a couple of capacitors from both sides of the mains to earth, shunting the rf picked up to earth. You can also include a capacitor across the mains, all inside the lamp. Of course all capacitors should be suitably rated. Regards Lawrence On 3/10/16, Dr. Wolf Ostwald wrote: > hi Chris ! > You need an E-type ferrite core to put the 230v cord in. This will kill > the sensitivity to Your tzransmitted RF. > CQ-DL shop once had them, if You cant get any, just contact me > > > wolf df2py > > > Am 10.03.2016 um 16:10 schrieb christoph: >> >> Dear all, >> >> my neighbour uses a very expensive lovely designer lamp switched by a >> four step touch switch. Unfortunately that switch follows keying of my >> mf transmitter. Is there somebody having experience with that kind of >> malfunction? >> >> The distance to the antenna feeding point is approximately 16m (ANT >> voltage app. 2.5kV). I tested a chain of eight common mode chokes in >> series to the affected lamp (mains separation of more than 100kOhms at >> the desired frequency). That showed improvement in sensitivity but the >> switch did not work anymore during transmission. The most effective >> solution is replacing the touch switch by a normal dimmer. >> >> Are there better ideas to keep in use the original touch switch? >> >> 73, Chris >> >> dl7saq >> > >