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  2. File:Radio waves hazard symbol.svg - Wikipedia

    en.wikipedia.org/wiki/File:Radio_waves_hazard...

    Radio waves hazard symbol. ---- Partly based on Image:High voltage warning.svg by Duesentrieb. Category:Hazard symbols: File usage. The following 10 pages use this file:

  3. Hazard symbol - Wikipedia

    en.wikipedia.org/wiki/Hazard_symbol

    A chemical hazard symbol is a pictogram applied to containers and storage areas of dangerous chemical compounds to indicate the specific hazard, and thus the required precautions. There are several systems of labels, depending on the purpose, such as on the container for transportation, containers for end-use, or on a vehicle during transportation.

  4. Workplace safety standards - Wikipedia

    en.wikipedia.org/wiki/Workplace_Safety_Standards

    4.1 Standard protection from radio frequency electromagnetic fields. 4.1.1 EMF medical devices. ... Radio waves hazard symbol. Hazard nanoparticle sign.

  5. Radio spectrum pollution - Wikipedia

    en.wikipedia.org/wiki/Radio_spectrum_pollution

    Its rules are found in the "NTIA Manual of Regulations and Procedures for Federal Radio Frequency Management". The Federal Communications Commission (FCC) manages and regulates all domestic non-federal spectrum use (47 U.S.C. 301). [2] Each country typically has its own spectrum regulatory organization.

  6. Radio spectrum - Wikipedia

    en.wikipedia.org/wiki/Radio_spectrum

    Radio waves are defined by the ITU as: "electromagnetic waves of frequencies arbitrarily lower than 3000 GHz, propagated in space without artificial guide". [5] At the high frequency end the radio spectrum is bounded by the infrared band. The boundary between radio waves and infrared waves is defined at different frequencies in different ...

  7. Electromagnetic radiation and health - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_radiation...

    The FCC limits for maximum permissible workplace exposure to shortwave radio frequency energy in the range of 3–30 MHz has a plane-wave equivalent power density of (900/ f ‍ 2) mW/cm 2 where f is the frequency in MHz, and 100 mW/cm 2 from 0.3 to 3.0 MHz.

  8. ANSI Z35 - Wikipedia

    en.wikipedia.org/wiki/ANSI_Z35

    ANSI Z35.1 the Specifications for Accident Prevention Signs, [c] was an American standard that dictated the layout, colors and wording of safety signs in the United States. The standard is the first American standard that made specific demands for the design, construction, and placement of safety signage in industrial environments.

  9. International distress frequency - Wikipedia

    en.wikipedia.org/wiki/International_distress...

    GMRS: 462.675 MHz is a UHF mobile distress and road information calling frequency allocated to the General Mobile Radio Service and used throughout Alaska and Canada for emergency communications; sometimes referred to as "Orange Dot" by some transceiver manufacturers who associated a frequency with a color-code for ease of channel coordination ...

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