[Elecraft] [K3] KIO3 failure mode

[David Gilbert]

That's about on par with the "non-magnetic mattresses" I used to see 
being sold to "prevent disturbance of the earth's natural magnetic field 
while you sleep."

All of this is pretty much economic Darwinism.

73,
Dave   AB7E



On 8/24/2022 11:27 AM, Walter Underwood wrote:
> You could get one of these “router EMF guards". Tinfoil hat is optional. Do not click on this if stupidity makes your brain hurt.
>
> https://smile.amazon.com/dp/B07MXD75TR/ <https://smile.amazon.com/dp/B07MXD75TR/>
>
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
>
>> On Aug 24, 2022, at 11:20 AM, Nick - WB5BKL <wb5bkl at gmail.com> wrote:
>>
>> What Dave said.  Almost identical here.
>>
>> Now, during t-storms, the K3 is a box sitting on the desk with _nothing_  repeat _nothing_ connected.  If I thought wrapping it with tinfoil* would help...
>>
>> cln - Nick
>> WB5BKL
>> Lake Buchanan, TX
>>
>> *  One of my neighbors has a plentiful supply.
>>
>>
>>
>> On 8/24/22 11:49, elecraft-request at mailman.qth.net wrote:
>>> Message: 9
>>> Date: Tue, 23 Aug 2022 14:47:24 -0700
>>> From: David Gilbert<ab7echo at za*****.com>
>>> To:
>>> Subject: Re: [Elecraft] [K3] KIO3 failure mode
>>>
>>>
>>> When my KIO3 got zapped, I had everything disconnected.? Antenna and all
>>> accessories from the K3 ... power supply as well.? The one thing I
>>> didn't have disconnected was the RS-232 link between the laptop and the
>>> KIO3.? Somehow a transient from a nearby lightning strike (not a direct
>>> one to my tower) traveled through the laptop power brick and to an
>>> otherwise completely floating K3.? If I remember correctly, the laptop
>>> power supply was even plugged into a quality surge protected UPS.
>>>
>>> It takes very little to zap the KIO3.? I now disconnect EVERYTHING in
>>> the shack duri