a ferrite core on a headset cable

Wired headphones are no protection

(Get a jump on your news competition. get input from the RF engineers on your staff.)There is a lot of news about the cancer causing effects of cell phones. It is the RF (Radio Frequency) radiation that causes this, as reported by 20-20 in 1999. However no one is mentioning that the RF energy can be re-radiated by the wired headset. The RF energy can be blocked by a RF Ferrite Core.

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T M.D. says ... on Tuesday, Jul 12 at 9:22 PM

she doesn't really pay attention to the answers I give her, even though she asked me to research her questions. I found this post on Google, and am trying to pass along what I've found out, hoping it's of some use to anyone curious about this issue.

T M.D. says ... on Tuesday, Jul 12 at 9:21 PM

controversial. For these reasons, I am even less inclined to encourage patients to purchase these air headphones. However, If one has disposable income at this time, then who am I to tell one how to spend it. I tried explaining this to my mother, but

T M.D. says ... on Tuesday, Jul 12 at 9:19 PM

because the rest of the wiring is still parallel to the rest of your body. However, there is some logic, as the only cancers linked to cell phones are gliomas and acoustic neuromas in the head. The risk itself is small, and the studies again are

T M.D. says ... on Tuesday, Jul 12 at 9:17 PM

There are also these "air" headphones out there, playing on this controversy about headphone radiation. They add a few inches of hollow rubber tubing to the headphone, like a stethoscope, to move the wire from the head. This seems rediculous to me,

T M.D. says ... on Tuesday, Jul 12 at 9:16 PM

frequencies. Older cell phones used 900 or 1800 mHz. our new GSM and other systems use much higher frequencies. I don't know how to pick the "proper" core, but since my mother wanted one, I plucked one off of an unused USB adapter and gave it to her.

T M.D. says ... on Tuesday, Jul 12 at 9:15 PM

that my mother wanted to buy one from, but it is a rip off, selling each core for $15. They also do not list the size of the core, or the material. I haven't had physics in a while, but there are different materials that work best for different

T M.D. says ... on Tuesday, Jul 12 at 9:14 PM

encourage people to place ferrite beads on their headphone cables, as I am assuming the amount of radiation is small. I would not discourage anyone, however, as you can buy individual beads/cores for $2 or so. There is a info-mmercial-like web site

T M.D. says ... on Tuesday, Jul 12 at 9:02 PM

a way to assess the quality of the study, as I am not an engineer, I would have to go with quantity and assume that headphones reduce radiation. There are, however, studies, including the ones i mentioned, showing ferrite beads to help. I would not

T M.D. says ... on Tuesday, Jul 12 at 9:00 PM

positioned in relation to the wire. A few other tests done in France and Australia report that headphones do NOT increase radiation. Contradictory reports such as these is basically how everything works. I do not know who is right. But without

T M.D. says ... on Tuesday, Jul 12 at 8:59 PM

The magazine group did a 2nd test with the government group's equipment, a few months after that, and their published results reconfirmed their initial findings. Their explanation was the discreprancy was due to the waythe manequin's head was

T M.D. says ... on Tuesday, Jul 12 at 8:57 PM

"Which?" in 2000 in the UK. Their test showed up to 3 times more radiation at their manequin's head than having the cell phone directly on the head. A follow up test by a UK government group a few months later contradicted this.

T M.D. says ... on Tuesday, Jul 12 at 8:54 PM

I am an Internal Medicine doctor I have had patients and family members ask me about this. I have spent a couple hours tracking down this information. The first alarming report about this was based on a test sponsored by a consumer magazine called

Bobr says ... on Wednesday, Jun 1 at 8:03 AM

If you hold the antenna 12" from head, the energy will be 1/144 than if antenna is 1" away. I would doubt the RF going to the headphones is significant or headphones would radiate significant RF. Regular headphones would be just fine if needed at all

Bobr says ... on Wednesday, Jun 1 at 7:52 AM

Holding a cell phone up to your head has been shown to change the activity of the brain. If there is a link with cancer, it is very weak. Out of an abundance of caution, one might want to take simple steps to keep antenna a distance from vital organs

Bogus Article says ... on Wednesday, Jun 1 at 7:22 AM

"There is a lot of news about the cancer causing effects of cell phones." Unsubstantiated claims, innuendo and here-say do NOT constitute journalism. We can read and think for our selves, and we want news that has substance, not this drool.

David says ... on Tuesday, May 31 at 9:10 PM

If cell phones cause cancer, its by a mechanism not yet understood. RF signals from cell phones, no matter the power output of the phone (we are talking about the energy of this wavelength) can not even change the spin of molecules...

Not worried! says ... on Tuesday, May 31 at 8:55 PM

Some people are so paranoid. Just about everything these days seems to cause cancer. So, why waste your time worrying? Just enjoy life to the fullest while you ARE here! :D

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