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What is Bluetooth, and Is It Safe? September 27, 2006

Posted by healthyself in 2.402 GHz-2.480 GHz, 2450 MHz, 900 mHz, Bioeffects, Biological Effects, Blogroll, Body Temperature, Brainwave Interference, Cell phone safety, Cell Phones, Children's health, Cordless Phones, Decision Making, Definitions, ear ache, earphones, Electrical Pulses, Electrical Surges, Electromagnetic Communications, Electromagnetic Field, Electromagnetic Interference, Electromagnetic pollution, Electromagnetic Spectrum, Electromagnetic waves, Electrosensitivity, Electrosmog, EMF Research, EMF's, EMR, Environment, Exposure, Frequencies, GHz, grams of tissue, Health related, High Frequencies, HOuseholds, HRD, Hz, Lifestyle, Long Term Health Risks, Men's Health, Microwave exposure, Mobile Music, mobile telephones, Noise, Non-Thermal Levels, Pain Perception, Parenting, Penetration, Pulsed Radiation, Pulses, radiation, Radio Waves, Radios, Research Needed, Risk of Disease, Teenagers, Traffic Pollution, transmission, Who is Affected?, Women's Health.
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Bluetooth is a method for datacommunication that uses short-range radiolinks to replace cables between computers and their connected units.

It is a matter of concern for some people that the carrier waves used by Bluetooth´s transmitters use the same frequency range as microwave owens (Bluetooth uses 2.402 GHz to 2.480 GHz). What does it feel like to get in the path of such waves?

Actually, the transmitting power is…too weak to be noticeable for humans….the radiation is not concentrated in a beam, but dispersed more or less in all directions. When using a wireless phone or a Bluetooth device, some of the emitted RF energy is absorbed by the body. The penetration depth is about 1.5 cm at 2450 MHz (about 2.5 cm at 900 MHz)…..The main absorption mechanism is fieldinduced rotation of polar molecules (for example H2O), which generates heat through molecular “friction”.

Heating by means of radio frequencies is possible over a broad frequency range. This is taken advantage of in microwave ovens at 2450 MHz using very high power levels (up to 1,000,000 times the power used by Bluetooth devices). However, 2450 MHz is not a resonance frequency of water. “There is, however, another side to this; some people are demonstrably over-sensitive to electromagnetic radiations. Long exposure to strong fields make some individuals so sensitive, after a few years, that they can no longer be near such fields without considerable discomfort. Bluetooth fits into a general development pattern where antennas for GSM-transmission and other sources of electromagnetic radiations become more and more prevalent in our cities. The future will show whether this is a healthy development.”

CFO’s, COO’s, IT, HRD, Admin: Take Precautions September 26, 2006

Posted by healthyself in Bioeffects, Biological Effects, Blogroll, Brainwave Interference, Budget, Buzzing, Cell phone industry, Cell phone safety, Cell Phones, Communication, Community, Computer Rooms, Cordless Phones, Decision Making, Digital, Electrical Components, Electrical Surges, Electrical Wiring, Electrochemical, electromagnetic, Electromagnetic Communications, Electromagnetic Field, Electromagnetic Interference, Electromagnetic pollution, Electromagnetic waves, Electrosensitivity, Electrosmog, ELF, Emergency Medicine, EMF Research, EMF's, Employees, EMR, Environment, Exposure, Financial Considerations, Frequencies, Funding, Government's role, Grants, Hand Portables, Handheld Units, Health related, High Frequencies, high voltage transmission lines, HOuseholds, HRD, Interdisciplinary, Internet, Legal Issues, Lifestyle, Long Term Health Risks, Low Frequencies, Magnetic, Memory Loss, Microwave exposure, Mobile Music, mobile telephones, Noise, Non Profit Organizations, Politics, Public Policy, Pulsed Radiation, Pulses, radiation, Radio Waves, Radios, Research, Research Needed, ringtones, Risk of Disease, Safe Levels, School administrators, Telecommunications, Telephony, Toxic Interactions, Traffic Pollution, Transfer, transmission, Who is Affected?, Workplace.
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“Research by the National Power Laboratories in Wisconsin shows that the average electronic machines modems, computers, etc.) experiences 3,000 transient events every month. Roughly 15% of all server crashes are caused by electromagnetic interference problems. These glitches cost U.S. industry $26 billion and the projected growth of this problem is at about 15% a year. Transients cause problems such as software crashes, hardware damage, and data loss or corruption. They all disrupt operations and cause economic losses. Transients can also have negative effects on human health. The greater the speed and the smaller microprocessors become, this makes them vulnerable to radiated and/or induced electromagnetic fields.

The internal configuration of the modern microprocessor is so compact that it is much more usceptible to electrical disturbances. The best way to cancel out the effects of undesirable transmissions is to screen electronic components from such sources. Organizations and applications ost affected by such problems include but are not limited to… Internet service providers, corporate
computer rooms, telecommunication and computer networks, e-Commerce facilities, electronic testing labs, banks, stock markets, industrial machinery, air-traffic control rooms, and many others.”

http://ece.gmu.edu/~pceperle/WebProjectFall00/EMhazzards/305_Proj.html

What is a Ring Back Tone? September 24, 2006

Posted by healthyself in 40 Hz, 440 Hz, 480 Hz, Blogroll, Cell phone safety, Cell Phones, Definitions, Electromagnetic pollution, Electromagnetic waves, Electrosensitivity, Electrosmog, Environment, Frequencies, Hearing, Lifestyle, Mobile Music, mobile telephones, Music, Pulsed Radiation, Sound, Telephony, Tone, Waves.
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“A ringback tone, or audible ringing tone or ringback signal, is the audible ringing that is heard on the telephone line by the calling party after dialing and prior to the call being answered at the distant end. The ringback tone is different in various countries depending on the requirements for the ringback specification in those countries. … the standard ringback signal is generated by summing a 440Hz tone with a 480Hz tone and applying these to the telephone line in a 2 second on and 4 second off cadence. The tone combination produces a warbling “ring… ring…” sound, caused by the 40Hz beat between the two. Most other countries use a single tone, …The ringback signal may be generated by the called-party servicing switch or by the calling-party switch, but it is not generated by the called telephone instrument. It is generally started and stopped at the same rate as the ringing signal itself but perhaps out of phase.”

In recent years, “personalized ringback” tone has become globally popular. With this feature, callers will hear an audio selection applied to the telephone line that has been previously determined by the called party. Audio selections can include music, messages, and special effects. Equipment is installed in the telephone network to enable replacement of the standard ringback tone with a personalized audio selection. ..Various companies supply personalized ringback equipment for mobile phone and landline telephone companies….The use of such nonstandard telephony signals can cause problems with automatic dialing equipment such as faxes and modems, however lines intended to receive such data telephone calls normally have the proper ringback tone. In addition, a caller may define specific users to whom the personalized content will be played. Other callers will hear the “traditional” ringback tone.”

http://en.wikipedia.org/wiki/Ringback_tone

What is a Ring Tone? September 24, 2006

Posted by healthyself in 20 Hz, 90v, Blogroll, Cell phone industry, Cell phone safety, Cell Phones, Cordless Phones, Definitions, Electromagnetic Field, Electromagnetic waves, Electrosensitivity, Electrosmog, EMF's, Frequencies, Lifestyle, Mobile Music, mobile telephones, Music, Parenting, ringtones, Sound, Teenagers, Tone.
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A ring tone is the sound made by a telephone to indicate an incoming call. The term, however, is most often used to refer to the customisable sounds available on mobile phones. This facility was originally provided so that people would be able to determine when their phone was ringing when in the company of other mobile phone owners.

A phone only rings when a special “ringing signal” is sent to it. For regular telephones, the ringing signal is a 90-volt 20-hertz AC wave generated by the switch to which the telephone is connected. For mobile phones, the ringing signal is a specific radio-frequency signal.

On August 5, 2006, the BBC reported that “Free ringtones” was the eighth most likely search term to return links to malware.

         Malware is software designed to infiltrate or damage a computer system, without the owner’s     informed consent. There are disagreements about the etymology of the term itself, the primary uncertainty being whether it is a portmanteau word (of “malicious” and “software“) or simply composed of the prefix “mal-” and the morpheme “ware”. Malware references the intent of the creator, rather than any particular features. It includes computer viruses, worms, Trojan horses, spyware, adware, and other malicious and unwanted software. In law, malware is sometimes known as a computer contaminant, for instance in the legal codes of California, West Virginia, and several other U.S. states.Malware should not be confused with defective software, that is, software which has a legitimate purpose but contains harmful bugs.

http://en.wikipedia.org/wiki/Malware
Whereas older telephones simply used a pair of bells for the ringer, modern ringtones have become extremely diverse, leading to phone personalization and customization.

Newer mobile phones allow the users to associate different ringtones for different phonebook entries. Many also allow users to create their own music tones, either with a “melody composer” or a sample/loop arranger…. Often these are native formats only available to one particular phone model or brand. However, other formats, such as MIDI or MP3, are often supported; they must be downloaded to the phone before they can be used as a normal ringtone. Commercial ringtones take advantage of this functionality, which has led to the success of the mobile music industry.

http://en.wikipedia.org/wiki/Ringtone