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=-0.7 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, RATWARE_GECKO_BUILD,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 u2ALV9Lk006173 for ; Thu, 10 Mar 2016 22:31:10 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ae86g-0006C0-Qd for rs_out_1@blacksheep.org; Thu, 10 Mar 2016 21:26:54 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ae86g-0006Br-Dy for rsgb_lf_group@blacksheep.org; Thu, 10 Mar 2016 21:26:54 +0000 Received: from mout01.posteo.de ([185.67.36.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.86) (envelope-from ) id 1ae86e-0001rC-7Y for rsgb_lf_group@blacksheep.org; Thu, 10 Mar 2016 21:26:53 +0000 Received: from dovecot03.posteo.de (dovecot03.posteo.de [172.16.0.13]) by mout01.posteo.de (Postfix) with ESMTPS id 2607E20AC6 for ; Thu, 10 Mar 2016 22:26:49 +0100 (CET) Received: from mail.posteo.de (localhost [127.0.0.1]) by dovecot03.posteo.de (Postfix) with ESMTPSA id 3qLjyd1hYMz5vNL for ; Thu, 10 Mar 2016 22:26:49 +0100 (CET) Message-ID: <56E1E698.7070505@posteo.de> Date: Thu, 10 Mar 2016 22:26:48 +0100 From: DK7FC User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <56E18E66.7010809@t-online.de> <56E1CA13.9090805@t-online.de> In-Reply-To: X-Scan-Signature: ce0e5a4ae990e5a63db3ab7aea21191b Subject: Re: LF: Touch switched lamp influenced by lf/mf transmission Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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: 7291 Another idea may be to shield the switch with bonding aluminium foil arround the switch. Connect the foil to earth (PE), if a PE wire is available inside the switch. A small field must stay free, to lay the finger on and turn on/off the switch, but the rest could maybe be protected? 73, Stefan Am 10.03.2016 21:27, schrieb Lawrence Galea: > 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 >>> >>> >> >> >