not
@cnet.com
| reply to Transmaster
Re: Wireless
"Be very very careful about higher power levels these frequencies are extremely dangerous."
This is FUD. The worst that RF can do is make you warm. You're more at risk sitting a hot laptop on your leg, going outside, or sitting in front of a campfire. |
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tim_k
Buttons, Bows, Beamer, Shadow, Kasey
Premium
join:2002-02-02
Stewartstown, PA
 ·Millenicom
 ·WildBlue
| said by not:
"Be very very careful about higher power levels these frequencies are extremely dangerous."
This is FUD. The worst that RF can do is make you warm. You're more at risk sitting a hot laptop on your leg, going outside, or sitting in front of a campfire.
Tell that to the idiot that uses a microwave oven to dry off the cat. Boy, to think the Air Force wasted all that money on warning signs outside our communication shelters warning about RF radiation. |
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jchull
@130.76.x.x
| reply to not
Yeah, that's why when we turned our LPA antenna on a horizontal plane, bugs would fall out of the trees when we transmit in the VHF range... and I know enough guys that have had only daughters after working on the system, including me, to put 2 and 2 together... |
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Unreal111
join:2004-01-21
Minneapolis, MN
| I have atleast two thick walls between my router and my laptop (ceiling and bedroom wall) about 20 feet from each other. Anyway if my channal is set on 6, the signal is excellent, but if I set it on 11 or as I go further away from 6 either side, my signal becomes weak, and in the meter it says low or sometimes good at the same distance. |
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Transmaster
Don't Blame Me I Voted For Bill and Opus
join:2001-06-20
Cheyenne, WY
 ·Qwest.net
3 edits | reply to not
quote:
This is FUD. The worst that RF can do is make you warm. You're more at risk sitting a hot laptop on your leg, going outside, or sitting in front of a campfire.
It gets real old when I read this kind of statement.
What you are saying is flat wrong. depending on the power levels, method of modulation, frequency, and proximity.
SHF frequencies can indeed be very dangerous.
It was amateur radio operators who discovered what at the time was called ham shack fevers. In fact before it was understood what was going on Ham's died. This was in the 1920's when this happened. To be sure the field intensities
used in WiFi equipment are far from harmful. There are Police officer that might argue with you. They developed testicular cancer which was attributed to the fact these Officer kept their radar gun between their legs, which let the magnetron, which was always on standby, radiated their 'nads with micro-waves. I personally have watched the guidance radar for the US Navy's Standard Anti Aircraft missile roast passing pelicans and seagulls when they flew throught the tracking beam and this was fair distance from the ship. Go here a calculate what would be a dangerous RF level: »n5xu.ae.utexas.edu/rfsafety/
--
"Remember when hacking a loogy
it comes not so much from the lungs but from the soul." |
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DaDogs
Semper Vigilantis
Premium
join:2004-02-28
Deltaville, VA
| reply to not
Clearly you have never operated a poorly grounded HF morse system...
FOLKS... DO NOT BELIEVE THAT THE WORST RF CAN DO IS WARM YOU UP... It can warm you up (to boiling) from the inside out...
--
Funny, I guess that old war horse was right, he said, "Isn't that why we did it? So nobody HAD to care." |
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tim_k
Buttons, Bows, Beamer, Shadow, Kasey
Premium
join:2002-02-02
Stewartstown, PA
·Millenicom
·WildBlue
| reply to jchull
said by jchull:
Yeah, that's why when we turned our LPA antenna on a horizontal plane, bugs would fall out of the trees when we transmit in the VHF range... and I know enough guys that have had only daughters after working on the system, including me, to put 2 and 2 together...
I attribute my inability to have kids at all to RF radiation I received in the A.F. |
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eddy_tn
join:2003-12-16
Plano, TX
| reply to Transmaster
Thanks for this information; I am a ham, and RF safety knowledge and application is essential for passing the exams and ensuring compliance with FCC rules for operating. I did a search on google for "shack fever" rf and variants and didn't get any relevent matches. Can you point me in a direction to research this?
Thank you,
eddy |
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necro-2607
@telus.net | reply to Unreal111
that's actually probably due to your network card, by default a lot of the WiFi cards are set to use the most transmitting power for the middle channels and lessen the power towards the lower or higher end of the unlicensed 2.4ghz band... |
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Transmaster
Don't Blame Me I Voted For Bill and Opus
join:2001-06-20
Cheyenne, WY
·Qwest.net
1 edit | reply to eddy_tn
said by eddy_tn  :
Thanks for this information; I am a ham, and RF safety knowledge and application is essential for passing the exams and ensuring compliance with FCC rules for operating. I did a search on google for "shack fever" RF and variants and didn't get any relevant matches. Can you point me in a direction to research this?
Thank you,
eddy
You bet...go here this is the best on line source I could find. »www.ieee.li/pdf/viewgraphs_rf_safety.pdf
This issue started in the days of the spark-gap transmitters. go here to listen to what such a transmitter sounded like »www.qsl.net/vk7ro/ this is about what a person would have heard 100 years ago from the doomed HMS Titanic. Very little was know about RF fields. Nothing was know about the ability of strong RF fields to heat tissue. The transmitters of the time, by modern standards where awful, harmonics all over everything, and radiating very strong RF fields. Radio operators, Marconi Boys, and Ham's where coming down with mysterious fevers. I have read of operators having temperatures as high a 104 degrees F. Some of these men died when they slowly cooked themselves in their radio Shacks. What is interesting about this when the cause of these fevers was finally discovered the Diatherm machine was invented using what was learned here.
--
"Remember when hacking a loogy
it comes not so much from the lungs but from the soul." |
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Transmaster
Don't Blame Me I Voted For Bill and Opus
join:2001-06-20
Cheyenne, WY
1 edit | reply to tim_k
A gigantic problem we see at the VA is radar operators coming down with cataracts much earlier in life then normally expected.
--
"Remember when hacking a loogy
it comes not so much from the lungs but from the soul." |
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