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.
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.
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
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
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.
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