Return-Path: X-Spam-DCC: paranoid 1290; 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=-0.6 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_90_100,HTML_MESSAGE,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 u2DHKs2Q014067 for ; Sun, 13 Mar 2016 18:20:54 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1af9Zm-0003YP-8y for rs_out_1@blacksheep.org; Sun, 13 Mar 2016 17:13:10 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1af9Zl-0003YG-Qk for rsgb_lf_group@blacksheep.org; Sun, 13 Mar 2016 17:13:09 +0000 Received: from mailout04.t-online.de ([194.25.134.18]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.86) (envelope-from ) id 1af9Zj-0002Eu-PE for rsgb_lf_group@blacksheep.org; Sun, 13 Mar 2016 17:13:08 +0000 Received: from fwd31.aul.t-online.de (fwd31.aul.t-online.de [172.20.26.136]) by mailout04.t-online.de (Postfix) with SMTP id A06864C807A for ; Sun, 13 Mar 2016 18:13:06 +0100 (CET) Received: from [91.7.1.230] (rfcr5EZOYhaX4KiCmP8cVUkKuSvGKii4AoKhfH+iXR96pmUl5uHAgSOdUHmnC+sQel@[91.7.1.230]) by fwd31.t-online.de with (TLSv1.2:ECDHE-RSA-AES256-SHA encrypted) esmtp id 1af9Zf-05f9SC0; Sun, 13 Mar 2016 18:13:03 +0100 Message-ID: <56E59F9D.3060705@t-online.de> Date: Sun, 13 Mar 2016 18:13:01 +0100 From: christoph User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <56E18E66.7010809@t-online.de> <56E1CA13.9090805@t-online.de> ,<56E1E698.7070505@posteo.de> <7E7DFBB4D102A04DB5ADC88D66628A4A444E0A40@ICTS-S-MBX1.luna.kuleuven.be> In-Reply-To: <7E7DFBB4D102A04DB5ADC88D66628A4A444E0A40@ICTS-S-MBX1.luna.kuleuven.be> X-ID: rfcr5EZOYhaX4KiCmP8cVUkKuSvGKii4AoKhfH+iXR96pmUl5uHAgSOdUHmnC+sQel X-TOI-MSGID: 7c893cd7-7fff-4366-9963-204f39fbfe46 X-Scan-Signature: a9f454fd0fafe9a35534b17d68ead88a Subject: Re: LF: Touch switched lamp influenced by lf/mf transmission Content-Type: multipart/alternative; boundary="------------050103040901020009040102" 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: 7336 This is a multi-part message in MIME format. --------------050103040901020009040102 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Dear touched switch lamps suffered, thanks for the responses. It seems there is no super hyper tricky idea. During the next weeks I will use the switch replace option by a normal mains cable dimmer. Thanks to my nice neighbours! 73, Chris DL7SAQ Am 10.03.2016 um 23:20 schrieb Rik Strobbe: > Hi Stefan, > > that might do the job, but I'm not sure of the combination "very expensive lovely designer lamp" and "aluminium foil" ;-) > > 73, Rik ON7YD > > ________________________________________ > Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens DK7FC [selberdenken@posteo.de] > Verzonden: donderdag 10 maart 2016 22:26 > Aan: rsgb_lf_group@blacksheep.org > Onderwerp: Re: LF: Touch switched lamp influenced by lf/mf transmission > > 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 >>>> >>>> >>> --------------050103040901020009040102 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: 8bit

Dear touched switch lamps suffered,

thanks for the responses. It seems there is no super hyper tricky idea. During the next weeks I will use the switch replace option by a normal mains cable dimmer. Thanks to my nice neighbours!

 

73, Chris

DL7SAQ



Am 10.03.2016 um 23:20 schrieb Rik Strobbe:
Hi Stefan,

that might do the job, but I'm not sure of the combination "very expensive lovely designer lamp" and "aluminium foil" ;-)

73, Rik  ON7YD

________________________________________
Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens DK7FC [selberdenken@posteo.de]
Verzonden: donderdag 10 maart 2016 22:26
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: Touch switched lamp influenced by lf/mf transmission

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<df2py@t-online.de>  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






      

      

    

    

  


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