Hi Greg and TopBanders
I recall having seen this request from a few years ago
and like any good Amateur I went looking in my Archives
and found this.
Hope it helps, BTW my wife bought one of these a few years ago
and I used to turn it on and off every time I was on 7mhz
she ended up giving it to the daughter for her birthday
73 David VK3EW
At 02:32 PM 7/14/02 +1200, Greg - ZL3IX wrote:
>Hi Guys,
>
>I have a particular problem that some of you may be able to help with. As
I have mentioned to one or two of you in personal e-mails, the reason why I
have been rather quiet on Topband is neighbour related. I have a neighbour
who has a touch lamp of which he is particularly fond. You may have seen
the type - you touch the base and it comes on with a dull glow, with
further touches increases its brightness, and finally switches off.
>
>The mechanism is probably that it picks up stray fields at line rate from
the person touching the base. Of course, when I transmit, anywhere from
Topband through to 20m, the thing comes on by itself, usually in the middle
of the night if I am on Topband.
>
>While I am fully aware that this is not my problem, and have been
supported by the local authorities in this attitude, in the interests of
good neighbourliness, I would like to find a solution if possible. I have
tried the usual ferrite toroid tricks on the line feed, but to no avail. I
guess the problem is in the capacitive pad itself. The electronic block is
sealed, so I can't gain access to place caps across active devices.
>
>Does anyone know of either, an add-on solution to this type of problem or,
a similar type of lamp with an EMC rating that covers Topband E-fields? I
am prepared to buy a new lamp to give my neighbour as a gesture of good
will, but must of course be careful about any safety aspects if I undertake
any modifications myself.
>
>73, Greg, ZL3IX
>
>
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>From lyndon@ve7tcp.ampr.org Thu, 18 Jan 1996 07:46:33 PST
To: <topband@contesting.com>
Date: Wed, 17 Jan 1996 06:59:10 -0500
X-Sender: nf4l@pop.jaxnet.com
To: dx@ve7tcp.ampr.org
From: nf4l@jaxnet.com (Mike Reublin)
Subject: Touch control SUMMARY
Sender: owner-dx@ve7tcp.ampr.org
Reply-To: nf4l@jaxnet.com (Mike Reublin)
X-VE7TCP-Loop-Detector: dx nf4l@jaxnet.com (Mike Reublin)
X-MailDaemon: <WinSmtp -Win16- V1.07beta1.7.s(unregistered)>
Thanks to all who responded - There were more than I expected !
The original question was:
> Does anyone have a tested, practical, solution (other than the trash
>heap) to those %$$## touch control lamps? I've tried the choke/resistor in
>the "active lead", but may well not have put the combo in the correct wire.
>The lamps I have, have a potted module with 3 wires, one of which is
>connected to the metal part of the lamp base. 40M is especially bad, during
>the CQWW phone test, I was blinking the neighbors house...They were amused -
>this time.
Responses are:
>(Harvey Hiller, KD6QK)
>
>Buy them a new lamp, preferably one without touch control and I think you
>will solve your problem rather cheaply and equitably.
>(John C. Goller K9UWA)
>
>tell'em to TAKE'EM BACK to the STORE they bought them from!! Offer to
>take them BCAK TO THE STORE THEY BOUGHT THEM FROM!.......good luck!
>the GOOD QUALITY ones don't have that problem!! after the above offers
>that were not taken by my neighbors I told them to read the little
>label on the bottom of them....them the SHERIFF CAR went by their house
>while I was standing there......and the damn things started blinking on
>and off..............then they finally agreed that it wasn't the fault
>of my radio!! 73 de JOHN K9UWA
>(Flemming Nymann Larsen, OZ1AXG)
>
>Hi Mike
>I had a similar problem a couple of years ago with the neighbors with a
comercial
>light dimmer. I used a capacitor on the AC (220V) side in order to short
circuit the
>HF. I cant remember the execact value but i used, but you might try with 10 nF.
>
>The HF is obvioussly colleced by the powerlines, so try preventing the HF
getting into
>the unit by stopping the HF at the AC side. Otherwise, it might turn out
that the
>"finger tuch" capacitence is to sencitive and that the pure magnetic field
causes the
>light to flick. In this case You have to change the construction of the dimmer.
>Good luck, FLAM OZ1AXG
>(Gerald D'Entremont, KC5RNX)
>
>Mike:
> If you find the solution to this...let me know PLEASE. Lamp is in
>bedroom next to the shack and its hard to try to catch the early band
>openings without waking the XYL up when I key the rig, hi.
>73, Gerald D'Entremont KC5RNX (ex-WA5TVM)
(Gene, ED4MPS)
>I am told that Radio Shack sells a line filter for about $15-20 that will fix
>RF effected touch lamps. I don't remember the actual nomenclature or part
>number but if "you got questions, they got answers." :-) 73,Gene
(Rod, VE3IRF)
>Mike:
>
>If you get some good answers, please post them to the reflector.
>I have the same problem with the ones in my house, plus they QRM *me* with a
>S8 buzz-saw between 14010 and 14050 KHz. >My only solution so far is unplug
the >suckers! GL + 73 Rod VE3IRF
>(Steve,)
>
>Yes if you find a fix for this problem please post it. I have the problem on
>20 meters and 40 meters and have tryed the same so called fix with no
>results. At this point in time I only know I have the problem with the two
>lamps in my bedroom. Wife says that when I'm on CW she is havIing
> flash-backs of the 60's strobe light effect..I sure wish I knew how she can
>sleep thru the light show when I stay up till 1 or 2 in the morning working
>DX. I wish she would just allow me to throw the darn things in the
>trash...Surly would not give them to the neighbors for a gift....Then again
>may I would give them away to them as I do not reallly like them that
>much...REVENGE!!!! HOW SWEET IT MIGHT BE!!!! Steve
>(Richard Wilder, K3DI)
>
>First, glad to see you request direct replies. I have a 24-hour account
>but those that have to pay COD I am sure appreciate it.
>
>I don't have any help to solve the problem. My interest is to learn what
>the legal status is. Are they under FCC part 15 and must accept any
>interference? Of course, one can not tell a neighbor "tough luck, it is
>your problem" even if it is. But, it would be nice to know if that is th
>bottom line if they elected to get fussy.
>
>I do not know what the technology is so I don't have a clue.
>
>73 and good luck, Dick Wilder, K3DI (ZF2?? QRP in ARRL CW)
>(Eddie J. Edwards, WDOGHA)
>
>Hi Mike!
>
>I've been messsing with different TC lamps for a couple years now. At least
>yours turned on/off for you so you could find them. Imagine if all they did
>was make noise; try and find them and explain to a distant neighbor that
>his/her lamps are "causing" interference. It's easier to get cooperation if
>the lamps are going on/off and annoying the owner too!
>
>The easy ones are the ones that rcv interference but do not generate. Use a
>common mode choke on the AC power line at the point the line enters the lamp
>(or inside of base if possible). This wrkd on my closest neighbors lamp which
>was a 3-way and rcvd interference only.
>
>On lamps generating interference, it gets more involved. It depends on where
>the interference is generated & how it is propagated. It may take alot of
>filtering.
>
>1. Try the common mode choke first. It's easy. See ARRL Interference
> Handbook for how to make/install a common mode filter. Great Book!
>2. Also try a AC line filter. Radio Shack makes one in 15-xxx series cat no.
> It's not a real good one though but it is cheap (11 or 12 bucks). A good
> one can cost 35-45 bucks.
>3. Add a RF-choke to the touch signal line (NOT AC-lines! already did this
> above.) It should be about 4 milliHenrys (NOT microHenrys). Try
> experimenting with different values though. Place choke as close to entry
> into control box as possible.
>4. Also, try replacing control circuit/box with a different model. Some do
> not generate as much interference as others. cost abt 6-7 bucks.
>
>Be careful not to resolve On/Off problem without eliminating interference;
>otherwise, you may be left with noise from a lamp that acts normally now that
>you "fixed it". Also, be careful not to let the neighbor know that you worked
>on the lamp; tell them your taking it to a qulified electrician or something.
>That way, after the fire has burned down their house, they won't think to sue
>you (hopefully).
>
>There's been lot's of articles on this subject the last few years in QST
>(Technical Coor, Hints&Kinks, etc...) so try looking them up for more info.
>
>Don't forget, leave lamp so you can turn it on/off if you can't eliminate
>interference to you, and tell them it's malfunctioning. Maybe they'll get rid
>of it like one of my neighbors did. Don't worry about FCC. They're on our
>side on this one. They'll tell them same thing--"bad lamp, sorry".
>
>73, de ed/WD-ZERO-GHA
>
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**************************************************************************
Mike Reublin email: nf4l@jax.jaxnet.com
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through the serial port... off the modem... under the phone line.....
above the gateway... over the T1 backbone... nothing but NET!!!!
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