Evolution of safety standards

The following is a brief summary of the wireless safety standards, which have become stricter over time.

* 1966: The ANSI C95.1 standard adopted the standard of 10 mW/cm2 (10,000 μW/cm2) based on thermal effects.
* 1982: The IEEE recommended further lowering this limit to 1 mW/cm2 (1,000 μW/cm2) for certain frequencies in 1982, which became a standard ten years later in 1992 (see below).
* 1986: The National Council on Radiation Protection and Measurements (NCRP) recommended the exposure limit of 580 μW/cm2.
* 1992: The ANSI/IEEE C95.1-1992 standard based on thermal effects used the 1 mW/cm2 (1,000 μW/cm2) safety limit. The United States Environmental Protection Agency‎ called this revised standard "seriously flawed", partly for failing to consider non-thermal effects, and called for the FCC to adopt the 1986 NCRP standard which was five times stricter.
* 1996: The FCC updated to the standard of 580 μW/cm2 over any 30-minute period for the 869 MHz, while still using 1mW/cm2 (1,000 μW/cm2) for PCS frequencies (1850-1990 MHz).[72]
* 1998: The ICNIRP standard uses the limit of 450 μW/cm2 at 900 MHz, and 950 μW/cm2 at 1900 MHz. The limit is frequency dependent.

[edit] Adequacy of