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Digital vs Analog cordless Phone? Health Radiation is the same?
I noticed that you can buy a 5.8Mhz phone in both analog or digital.
I realize most people thing cordless phones are fairly safe, but is an still curious if one gives off more radiation then the other before I buy a my next phone. thanks |
Digital vs Analog cordless Phone? Health Radiation is the same?
5.8 GHz (not MHz) phones don't seem to have very good range. You might look
at the DECT 6.0 phones which work a bit above 2 GHz. Unless you expect to be on the phone for many hours each day, I don't see why you should be much worried about the amoung of RF your brain is receiving. Excuse me, but the open sore above my right ear has started bleeding again, and I have to attend to it. |
Digital vs Analog cordless Phone? Health Radiation is the same?
more power equals more radiation? is that correct?
I read some info on the web suggesting that the new Dect technology is worst for you, because of the lower frequencies (1.9Ghz) affects your cells in a negative way. |
Digital vs Analog cordless Phone? Health Radiation is the same?
"lbbss" wrote in message ... more power equals more radiation? is that correct? I read some info on the web suggesting that the new Dect technology is worst for you, because of the lower frequencies (1.9Ghz) affects your cells in a negative way. More power means more tissue heating and that (heating) is the concern. RF heats tissues. Stick a hot dog in the microwave as a basic experiment. Non-ionizing energy sources just do heat damage. A dozen mW or even hundreds of them are of no concern. The temperature rise is almost impossible to measure after it passes through thick skulls. |
Digital vs Analog cordless Phone? Health Radiation is the same?
On Sat, 20 Dec 2008 22:25:11 -0000, Charles wrote:
"lbbss" wrote in message ... more power equals more radiation? is that correct? I read some info on the web suggesting that the new Dect technology is worst for you, because of the lower frequencies (1.9Ghz) affects your cells in a negative way. More power means more tissue heating and that (heating) is the concern. RF heats tissues. Stick a hot dog in the microwave as a basic experiment. Non-ionizing energy sources just do heat damage. A dozen mW or even hundreds of them are of no concern. The temperature rise is almost impossible to measure after it passes through thick skulls. If it were heating, you would feel it heating your flesh surely? -- http://www.petersparrots.com http://www.insanevideoclips.com http://www.petersphotos.com "You seem to have a cracked vertebrae." the Emergency Room doctor told the high school aged boy. "What happened?" "Well, you see," the teenager replied, "I was kissing my girl good-night and damned if her brother didn't come out the back door and step right in the middle of my back." |
Digital vs Analog cordless Phone? Health Radiation is the same?
On Saturday, December 20, 2008 5:25:11 PM UTC-5, Charles wrote:
"lbbss" wrote in message ... more power equals more radiation? is that correct? I read some info on the web suggesting that the new Dect technology is worst for you, because of the lower frequencies (1.9Ghz) affects your cells in a negative way. More power means more tissue heating and that (heating) is the concern. RF heats tissues. Stick a hot dog in the microwave as a basic experiment. Non-ionizing energy sources just do heat damage. A dozen mW or even hundreds of them are of no concern. The temperature rise is almost impossible to measure after it passes through thick skulls. Hello, I live in Canada and I need good (low or no radiation) cordless phone. I bought Siemens Gigaset A580 from Australia but my call waiting did not work in Canada, actually I had to disconnect current conversation in order to answer new incoming call. Besides that, I liked that phone because it had Eco Mode PLUS (the phone is dead now). Now the problem is that in Canada and US we can not buy Eco Mode PLUS phone, we can only buy Eco Mode which means base station is pulsing/radiating ALL THE TIME. I would appreciate if you can help me to choose a new cordless phone for my home (even if it's an older type as long as it has call display and call waiting). Please help me choose the phone and please explain what technology and why (analog, digital, 2.4GHz, 5.8GHz, etc). Thank you in advance and I wish you good luck with your researches! Peja |
Digital vs Analog cordless Phone? Health Radiation is the same?
wrote:
On Saturday, December 20, 2008 5:25:11 PM UTC-5, Charles wrote: "lbbss" wrote in message ... more power equals more radiation? is that correct? I read some info on the web suggesting that the new Dect technology is worst for you, because of the lower frequencies (1.9Ghz) affects your cells in a negative way. More power means more tissue heating and that (heating) is the concern. RF heats tissues. Stick a hot dog in the microwave as a basic experiment. Non-ionizing energy sources just do heat damage. A dozen mW or even hundreds of them are of no concern. The temperature rise is almost impossible to measure after it passes through thick skulls. Hello, I live in Canada and I need good (low or no radiation) cordless phone. I bought Siemens Gigaset A580 from Australia but my call waiting did not work in Canada, actually I had to disconnect current conversation in order to answer new incoming call. Besides that, I liked that phone because it had Eco Mode PLUS (the phone is dead now). Now the problem is that in Canada and US we can not buy Eco Mode PLUS phone, we can only buy Eco Mode which means base station is pulsing/radiating ALL THE TIME. I would appreciate if you can help me to choose a new cordless phone for my home (even if it's an older type as long as it has call display and call waiting). Please help me choose the phone and please explain what technology and why (analog, digital, 2.4GHz, 5.8GHz, etc). Thank you in advance and I wish you good luck with your researches! Peja The only reliable phone I have is an old 800 MHz analog. My DECT Uniden would be great except it cuts out often for 20 sec, goes into privacy mode. Software issues I think. Garbage. There are so many model look a likes, make buying difficult, plus they change models too often. Greg |
Digital vs Analog cordless Phone? Health Radiation is the same?
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Digital vs Analog cordless Phone? Health Radiation is the same?
On Jan 16, 10:28*am, "Michael A. Terrell"
wrote: wrote: Hello, I live in Canada and I need good (low or no radiation) cordless phone. * *How is it supposed to work if it doesn't radiate some RF? Grin, Maybe semaphore. :^) George H. |
Digital vs Analog cordless Phone? Health Radiation is the same?
Michael A. Terrell skrev:
wrote: Hello, I live in Canada and I need good (low or no radiation) cordless phone. How is it supposed to work if it doesn't radiate some RF? Infrared? -- Husk kørelys bagpå, hvis din bilfabrikant har taget den idiotiske beslutning at undlade det. |
Digital vs Analog cordless Phone? Health Radiation is the same?
On 1/16/2013 10:35 AM, Leif Neland wrote:
Michael A. Terrell skrev: wrote: Hello, I live in Canada and I need good (low or no radiation) cordless phone. How is it supposed to work if it doesn't radiate some RF? Infrared? Get one with a speakerphone in the handset. Stand as far away as possible while you talk. |
Digital vs Analog cordless Phone? Health Radiation is the same?
George Herold wrote: On Jan 16, 10:28 am, "Michael A. Terrell" wrote: wrote: Hello, I live in Canada and I need good (low or no radiation) cordless phone. How is it supposed to work if it doesn't radiate some RF? Grin, Maybe semaphore. :^) Even a fullphore wouldn't help him. ;-) |
Digital vs Analog cordless Phone? Health Radiation is the same?
Leif Neland wrote: Michael A. Terrell skrev: wrote: Hello, I live in Canada and I need good (low or no radiation) cordless phone. How is it supposed to work if it doesn't radiate some RF? Infrared? Duh. How will you have infrared without radiation? |
Digital vs Analog cordless Phone? Health Radiation is the same?
mike wrote: On 1/16/2013 10:35 AM, Leif Neland wrote: Michael A. Terrell skrev: wrote: Hello, I live in Canada and I need good (low or no radiation) cordless phone. How is it supposed to work if it doesn't radiate some RF? Infrared? Get one with a speakerphone in the handset. Stand as far away as possible while you talk. Run a couple wires for the speaker, to reduce feedback. ;-) |
Digital vs Analog cordless Phone? Health Radiation is the same?
Michael A. Terrell wrote:
Leif Neland wrote: Infrared? Duh. How will you have infrared without radiation? Better than 2.4GHz Bluetooth radiation though, IMO. -- Daniel Mandic |
Digital vs Analog cordless Phone? Health Radiation is the same?
"Michael A. Terrell" wrote:
wrote: Hello, I live in Canada and I need good (low or no radiation) cordless phone. How is it supposed to work if it doesn't radiate some RF? I think he is talking about base which radiates continuously. Just keep base at distance, it will be no problem. The handset is right in your face, but even it is only 10 mw low power. A cell phone could be at least 30 times this power. Greg |
Digital vs Analog cordless Phone? Health Radiation is the same?
Daniel Mandic wrote: Michael A. Terrell wrote: Leif Neland wrote: Infrared? Duh. How will you have infrared without radiation? Better than 2.4GHz Bluetooth radiation though, IMO. Really? Do you have any idea how much IR radiation you would need to be able to use a cordless phone around a corner, or on the other side of a wall? |
Digital vs Analog cordless Phone? Health Radiation is the same?
gregz wrote: "Michael A. Terrell" wrote: wrote: Hello, I live in Canada and I need good (low or no radiation) cordless phone. How is it supposed to work if it doesn't radiate some RF? I think he is talking about base which radiates continuously. Just keep base at distance, it will be no problem. The handset is right in your face, but even it is only 10 mw low power. A cell phone could be at least 30 times this power. Don't you think that if cell phones posed any real danger we would have overflowing cemetaries today? How about the engineers who spent their entire adult lives working in high power RF fields which would light flourescent lamps with no connections, yet they were still healthy in their 80s. I met them at a VOA facility, and the old 500 KW WLW transmitter site. |
Digital vs Analog cordless Phone? Health Radiation is the same?
Michael A. Terrell wrote:
Daniel Mandic wrote: Michael A. Terrell wrote: Leif Neland wrote: Duh. How will you have infrared without radiation? Better than 2.4GHz Bluetooth radiation though, IMO. Really? Do you have any idea how much IR radiation you would need to be able to use a cordless phone around a corner, or on the other side of a wall? Of course, IR is more directional. I meant 'better' concerning the health question. Cordless phone with IR makes no sense to me..., maybe in an open room/appartment without interior-walls, corners etc., with a 360° IR transmitting unit installed on the ceiling, if there is such thing. -- Daniel Mandic |
Digital vs Analog cordless Phone? Health Radiation is the same?
Daniel Mandic wrote: Michael A. Terrell wrote: Daniel Mandic wrote: Michael A. Terrell wrote: Leif Neland wrote: Duh. How will you have infrared without radiation? Better than 2.4GHz Bluetooth radiation though, IMO. Really? Do you have any idea how much IR radiation you would need to be able to use a cordless phone around a corner, or on the other side of a wall? Of course, IR is more directional. I meant 'better' concerning the health question. Cordless phone with IR makes no sense to me..., maybe in an open room/appartment without interior-walls, corners etc., with a 360° IR transmitting unit installed on the ceiling, if there is such thing. My 5.8 GHz panasonic cordless phone works 100 feet from the base, all over the inside of my house, the outbuildings and the entire lot. How would you use IR when it's 100°F or hotter outside? |
Digital vs Analog cordless Phone? Health Radiation is the same?
Michael A. Terrell wrote:
How would you use IR when it's 100°F or hotter outside? I have never heard about that. Is there a temperature dependence going with IR? -- Daniel Mandic |
Digital vs Analog cordless Phone? Health Radiation is the same?
Daniel Mandic wrote: Michael A. Terrell wrote: How would you use IR when it's 100°F or hotter outside? I have never heard about that. Is there a temperature dependence going with IR? IR is heat. High temperatures mask IR signaling. |
Digital vs Analog cordless Phone? Health Radiation is the same?
On Wed, 16 Jan 2013 19:35:02 +0100, Leif Neland
wrote: Michael A. Terrell skrev: wrote: Hello, I live in Canada and I need good (low or no radiation) cordless phone. How is it supposed to work if it doesn't radiate some RF? Infrared? In my checkered past, I designed and built an IR paging system that never made it to market. That's different from a cordless phone in that the IR paging path is one way. To cover a rather large office area, I was running 10 watts of IR into a hemispherical reflector to get wide area coverage. It also has the problem of only allowing one conversation (or compressed audio time slice) at a time per room. No problem for paging, but big problems for IR. Visualize a room full of TV sets, as found in the department stores, and expecting all the remote controls to run simultaneously at the same time. I could have used different "colors" of IR to get more than one channel, but the filters are pricy. The spec was for 100 channels with 205 utilization, which means 20 different "colors". That won't happen. To go bidirectional, I would need at least several hundred milliwatts of IR in the handset, or less with shorter range. Also add extra voice compression and switching circuitry, so that it simulates a full duplex system. Compared to the typical 5mw of RF produced by various wireless cordless phone systems, IR would be a battery hog. Dealing with obstructions wasn't much of a problem. IR bounces nicely off of various objects. Multiple emitters were also a big help. However, dealing with IR interference from lighting and sunlight through windows was not much fun. The light from these would overload the receive phototransistor resulting in a very high baseline noise level, which the emitter had to overcome. That's another reason why I needed 10 watts. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
Digital vs Analog cordless Phone? Health Radiation is the same?
On Thu, 17 Jan 2013 19:18:48 -0500, "Michael A. Terrell"
wrote: IR is heat. Nope. Long wave or far IR is heat. Short wave or near IR is ummmm... near IR. Note that there are various division of IR: http://en.wikipedia.org/wiki/Infrared#Commonly_used_sub-division_scheme High temperatures mask IR signaling. Nope. I can prove it with a simple test. Heat up a frying pan and put it in front of IR receiver window in your TV, hi-fi, or whatever. That should belch many watts of heat in the IR region. Then try using the IR remote control. It will work because the 8000-15000 nanometer wavelength of the IR "heat" from the frying pan is quite different from the 850 nanometer wavelength of the IR emitter in your remote control. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
Digital vs Analog cordless Phone? Health Radiation is the same?
Jeff Liebermann wrote: On Thu, 17 Jan 2013 19:18:48 -0500, "Michael A. Terrell" wrote: IR is heat. Nope. Long wave or far IR is heat. Short wave or near IR is ummmm... near IR. Note that there are various division of IR: http://en.wikipedia.org/wiki/Infrared#Commonly_used_sub-division_scheme High temperatures mask IR signaling. Nope. I can prove it with a simple test. Heat up a frying pan and put it in front of IR receiver window in your TV, hi-fi, or whatever. That should belch many watts of heat in the IR region. Then try using the IR remote control. It will work because the 8000-15000 nanometer wavelength of the IR "heat" from the frying pan is quite different from the 850 nanometer wavelength of the IR emitter in your remote control. Try that outdoors, in the bright sunlight where it isn't a narrow slice of IR. |
Digital vs Analog cordless Phone? Health Radiation is the same?
On Fri, 18 Jan 2013 02:43:48 -0500, "Michael A. Terrell"
wrote: Jeff Liebermann wrote: On Thu, 17 Jan 2013 19:18:48 -0500, "Michael A. Terrell" wrote: IR is heat. Nope. Long wave or far IR is heat. Short wave or near IR is ummmm... near IR. Note that there are various division of IR: http://en.wikipedia.org/wiki/Infrared#Commonly_used_sub-division_scheme High temperatures mask IR signaling. Nope. I can prove it with a simple test. Heat up a frying pan and put it in front of IR receiver window in your TV, hi-fi, or whatever. That should belch many watts of heat in the IR region. Then try using the IR remote control. It will work because the 8000-15000 nanometer wavelength of the IR "heat" from the frying pan is quite different from the 850 nanometer wavelength of the IR emitter in your remote control. Try that outdoors, in the bright sunlight where it isn't a narrow slice of IR. Yep. An IR cordless phone probably won't work outdoors. See my comments in this thread on the IR paging system I helped design. Solar and inside lighting interference were major problems. The solar spectra contains plenty of near IR radiation, that does a splendid job of trashing IR data. However, if the IR beam can be controlled to a small spot size with lenses and filters and sunlight excluded with baffles and shades, high speed IR data is possible. Due to fear of RF, the local hospital has a bunch of IR ethernet links on the rooftops. Those are great fun shooting over the freeway, where the rising hot air from the vehicles causes all kinds of strange propagation effects. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
Digital vs Analog cordless Phone? Health Radiation is the same?
Jeff Liebermann wrote:
Also, there's no connection between cell phone (and by implication cordless phone) radiation and brain cancer. What do you await. A horn growing out of the head? Long time meat consume dazzles the mind too, as per an U.K. survey. Makes more prepared to take risks, respectively, they can't estimate risks as good as they can while normal biological operation. -- Daniel Mandic |
Digital vs Analog cordless Phone? Health Radiation is the same?
Jeff Liebermann wrote: On Fri, 18 Jan 2013 02:43:48 -0500, "Michael A. Terrell" wrote: Jeff Liebermann wrote: On Thu, 17 Jan 2013 19:18:48 -0500, "Michael A. Terrell" wrote: IR is heat. Nope. Long wave or far IR is heat. Short wave or near IR is ummmm... near IR. Note that there are various division of IR: http://en.wikipedia.org/wiki/Infrared#Commonly_used_sub-division_scheme High temperatures mask IR signaling. Nope. I can prove it with a simple test. Heat up a frying pan and put it in front of IR receiver window in your TV, hi-fi, or whatever. That should belch many watts of heat in the IR region. Then try using the IR remote control. It will work because the 8000-15000 nanometer wavelength of the IR "heat" from the frying pan is quite different from the 850 nanometer wavelength of the IR emitter in your remote control. Try that outdoors, in the bright sunlight where it isn't a narrow slice of IR. Yep. An IR cordless phone probably won't work outdoors. See my comments in this thread on the IR paging system I helped design. Solar and inside lighting interference were major problems. The solar spectra contains plenty of near IR radiation, that does a splendid job of trashing IR data. However, if the IR beam can be controlled to a small spot size with lenses and filters and sunlight excluded with baffles and shades, high speed IR data is possible. Due to fear of RF, the local hospital has a bunch of IR ethernet links on the rooftops. Those are great fun shooting over the freeway, where the rising hot air from the vehicles causes all kinds of strange propagation effects. The poor fools never stop to think about the broadband radiation from our sun. I used to dread the 'Solar outages' on C-band when I worked in CATV & broadcast. No matter how much advance warning you gave, idiots would jam the phone lines, day after day as they lost their garbage TV for a minute or so. The sat's EIRP was over 100W at 4 GHz, and the sun swamped it easily. |
Digital vs Analog cordless Phone? Health Radiation is the same?
On Fri, 18 Jan 2013 19:56:48 -0500, "Michael A. Terrell"
wrote: The poor fools never stop to think about the broadband radiation from our sun. I used to dread the 'Solar outages' on C-band when I worked in CATV & broadcast. No matter how much advance warning you gave, idiots would jam the phone lines, day after day as they lost their garbage TV for a minute or so. The sat's EIRP was over 100W at 4 GHz, and the sun swamped it easily. It still happens today with Ka and Ku band solar outages, when the sun gets behind the satellite belt twice a year. http://en.wikipedia.org/wiki/Solar_outage I used to announce the solar outages on a local newsgroup for a different reason. I live in a forest, where locating suitable locations for a DBS dish is tricky. The easiest way is to wait for when the sun gets behind the desired satellite, and photograph the roof during the outage. That's where a dish will work. Here's some of my photos for DirecTV at 101w. http://802.11junk.com/jeffl/pics/DBS/index.html Note the shadows from the tree branches on my dish indicating I have a blockage problem. I don't post the outage predictions any more because with the current HDTV satellite distribution, it takes 3-5 satellites for full coverage, which is impossible through all the trees. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
Digital vs Analog cordless Phone? Health Radiation is the same?
Jeff Liebermann wrote: On Fri, 18 Jan 2013 19:56:48 -0500, "Michael A. Terrell" wrote: The poor fools never stop to think about the broadband radiation from our sun. I used to dread the 'Solar outages' on C-band when I worked in CATV & broadcast. No matter how much advance warning you gave, idiots would jam the phone lines, day after day as they lost their garbage TV for a minute or so. The sat's EIRP was over 100W at 4 GHz, and the sun swamped it easily. It still happens today with Ka and Ku band solar outages, when the sun gets behind the satellite belt twice a year. I no longer work with any Sat, so I'm not the one that catches hell for it when 10,000 people lose HBO on a cable system. At least with KU band you need a smaller break in the trees than you needed with a five meter fiberglass dish with multiple feedhorns for a CATV headend. That was back when a 100°K LNA & 3" Heliax was common. :) http://en.wikipedia.org/wiki/Solar_outage I used to announce the solar outages on a local newsgroup for a different reason. I live in a forest, where locating suitable locations for a DBS dish is tricky. The easiest way is to wait for when the sun gets behind the desired satellite, and photograph the roof during the outage. That's where a dish will work. Here's some of my photos for DirecTV at 101w. http://802.11junk.com/jeffl/pics/DBS/index.html Note the shadows from the tree branches on my dish indicating I have a blockage problem. I don't post the outage predictions any more because with the current HDTV satellite distribution, it takes 3-5 satellites for full coverage, which is impossible through all the trees. The trees here used to be thicker than that, till two years of high hurricane activity a few years back. Now about 90% of the bigh trees are gone, leaving the shorter & stronger trees behind. |
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