[Elecraft] Static Discharge Through K-Pod

[Hisashi T Fujinaka]

Warning! Until that dries, it could be very slippery!

On Thu, 15 Mar 2018, Bob McGraw K4TAX wrote:

> Mix a solution of 1 part DOWNY fabric softener and 1 part water. Put it 
> in a spray bottle and mist the carpet.  You may need to mist the plastic 
> chair pad as well.   This should take care of the static issue for quite 
> some time.  If it returns, mist it again.
>
> 73
>
> Bob, K4TAX
>
>
> On 3/15/2018 1:52 PM, elecraft-request at mailman.qth.net wrote:
>> Message: 23
>> Date: Thu, 15 Mar 2018 18:42:09 +0000
>> From: "Larry (K8UT)"<K8UT at charter.net>
>> To: "Chuck Milam, N9KY"<N9KY at arrl.net>, "Elecraft Mail List"
>> 	<elecraft at mailman.qth.net>
>> Subject: Re: [Elecraft] Static Discharge Through K-Pod
>> Message-ID: <emc78c4b6f-c10b-496c-ba76-f298eedbdeb1 at k8ut-pc>
>> Content-Type: text/plain; format=flowed; charset=utf-8
>>
>> Chuck,
>>
>> I had this problem in my carpeted shack with a desk chair rolling around
>> on a vinyl chair pad. After a little testing I determined that the metal
>> case of the K-Pod is not grounded.
>>
>> The KPod uses a straight-through 6 conductor cable with identical RJ
>> connectors on each end. I built a slightly longer cable for my KPod,
>> using 6 conductors of a stranded 8 conductor flat ethernet wire. A 7th
>> conductor provides chassis ground from the K3 to the metal case of the
>> KPod.
>>
>> I have had zero issues since grounding the K-Pod case.
>>
>> -larry (K8UT)
>>
>> ------ Original Message ------
>> From: "Chuck Milam, N9KY"<N9KY at arrl.net>
>> To: "Elecraft Mail List"<elecraft at mailman.qth.net>
>> Sent: 2018-03-15 11:08:03
>> Subject: [Elecraft] Static Discharge Through K-Pod
>>
>>> Greetings, All!
>>>
>>> I'm getting static electricity shocks through my K-Pod case, and I need
>>> some suggestions for mitigation.
>>>
>>> Background:  I keep my K-Pod on my operating desk just to the right of
>>> the
>>> shack computer mouse. I've noticed when I walk over to the desk and
>>> grab
>>> the mouse, the K-Pod will beep.  Further investigation shows I'm
>>> getting
>>> static electricity discharge from my finger through the K-Pod, this
>>> morning
>>> I even noticed an arc from my pinky finger to the K-Pod case. When the
>>> K-Pod beeps, the D1 and D2 lights will cycle.
>>>
>>> The shack is carpeted, and I have a rolling chair on one of those
>>> plastic
>>> chair mats (which can probably go away if necessary,) I suspect that
>>> mat is
>>> probably contributing to the static problem.
>>>
>>> Obviously, I don't want static electricity discharging through my K-Pod
>>> and
>>> then through my K3. I'd welcome any ideas for static mitigation
>>> strategies.  I was thinking some sort of grounded mouse/keyboard mat,
>>> which
>>> used to be more common, but seem hard to find these days.
>>>
>>> 73,
>>>
>>> Chuck Milam, N9KY
>>> N9KY at arrl.net
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>>
>> ------------------------------
>>
>> Message: 24
>> Date: Thu, 15 Mar 2018 13:52:00 -0500
>> From: James Wilson<w4rks73 at gmail.com>
>> To:elecraft at mailman.qth.net
>> Subject: Re: [Elecraft] Static Discharge Through K-Pod
>> Message-ID:
>> 	<CAJNRSCY9BOCR5o=gj_GXcjp96Xh5Zw5oS9BBQqvYbLjstWhQJw at mail.gmail.com>
>> Content-Type: text/plain; charset="UTF-8"
>>
>> Chuck,
>>
>> I'm also in an area of low humidity and such static discharges
>>
>> are a problem. I have everything grounded together and a small
>>
>> patch of aluminum foil connected with a 1 megohn resistor. After
>>
>> a trip across the carpet and before touching anything, I touch the
>>
>> foil. The resistor prevents a spark but discharges the charge. That
>>
>> may be worth a try for you.
>>
>> Jim - W4RKS
>>
>> ---------------------
>>
>>> I'm getting static electricity shocks through my K-Pod case, and I need
>>> some suggestions for mitigation.
>>> Background:  I keep my K-Pod on my operating desk just to the right of the
>>> shack computer mouse. I've noticed when I walk over to the desk and grab
>>> the mouse, the K-Pod will beep.
>
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-- 
Hisashi T Fujinaka - htodd at twofifty.com
BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee