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 <[email protected]> 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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