[TowerTalk] OT but relevant

[Roger (K8RI) on TT]

With MIG and TIG, or Plasma torch I don't get near to that current.  
With mine it just says to keep clear of the cables.  I'll have to look 
up which one it is.
They are so much easier, I haven't used a stick, or buzz box in many years

Thanks,

Roger (K8RI)

On 2/25/2016 Thursday 2:40 PM, Patrick Greenlee wrote:
> Roger, you should run the welding leads twisted together to form a 
> twisted pair as much as possible.  Bring the leads to the weld site 
> from in front of you not past you to the site.  Clamp the ground clamp 
> as close as possible to the weld site. Don't put your body any closer 
> to the weld site than absolutely necessary.  Don't exceed about 160 amps.
>
> The above is from the Medtronic folks who made my ICD.  I'm exploring 
> the possibility of a mu metal shield, mu metal as made into fine 
> strands and woven into flexible cloth to be worn beneath my welding 
> leathers.
>
> I have to avoid magnetic fields near my ICD as it has a switch inside 
> that is magnetically operated so a tech can "flip" the switch with  a 
> small hand held magnet. Speaker magnets in a cell phone are one no no 
> along with refrigerator door magnets etc.
>
> Patrick        NJ5G
>
> On 2/25/2016 12:45 PM, Roger (K8RI) on TT wrote:
>>
>> It all depends.  I have a defib with a pacemaker back-up.  The only 
>> restriction was no cell phones in my shirt pocket.
>> I can arc weld and run the legal limit on any band.
>> It's been so long that I've forgotten who made it and I don't know 
>> where my wife stashed the papers.
>> Most, but not all, of these devices are pretty much RFI proof. I 
>> researched the web and found the best claimed RFI proof  by I believe 
>> it was the Cleveland center (Institute - Clinic). At any rate that 
>> was what they use here and max power on HF plus several hundred watts 
>> on 50, 144, and 50W on  440 (Legal limit in this part of Michigan) 
>> have never bothered it.
>>
>> They gave me a tutorial on welding which basically said, do not run 
>> the cables in front of my chest, but run them up each side.
>> The programming is done via 900 MHz digital   I do have a monitor at 
>> home that does a diagnostic twice a year and would call home were 
>> there an event.
>>
>> I had a stroke, then 3 years later a heart attack and in 3 more 
>> another stroke before "they" discovered the problem was my heart 
>> (A-fib) after prolonged elevated heart rate.
>> All came with no advanced warning.  So no more climbing, or flying 
>> airplanes.  Had any of them happened while flying or climbing, I 
>> would have been SOL.
>>
>> 73 es good luck.
>>
>> Roger (K8RI)
>>
>>
>> On 2/25/2016 Thursday 12:01 PM, Kathy Bookmiller via TowerTalk wrote:
>>> Sorry about this but it may affect many of us eventually.
>>> Yesterday I went for a stress test and got some bad results. I have 
>>> a left bundle block and they want to me to have a pacemaker 
>>> implanted ASAP.
>>> Obviously this is distressful as I've been in excellent health for 
>>> my 68 years and now this:(
>>> One of my first thoughts was are pacemakers prone to RFI? I asked 
>>> the surgeon about this and he said he'd never heard of this before 
>>> in his practice.
>>> I'm wondering if any of the readers here have had any experience 
>>> with pacemakers/RFI issues? I know over the years I've seen 
>>> references to it in an offhand way but didn't pay much attention as 
>>> it didn't apply to myself at the time.
>>> My beam is only 20-25' directly above me, as can be seen on my qrz 
>>> page.
>>> Any thoughts/experiences?
>>> Kathy W2NK
>>> _______________________________________________
>>>
>>>
>>>
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>>
>
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-- 

73

Roger (K8RI)


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