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  2. dBrn - Wikipedia

    en.wikipedia.org/wiki/DBrn

    Thus, 0 dBrn = -90 dBm. Use of 144 line, 144-receiver, or C-message weighting, or flat weighting, can be indicated in parentheses. With C-message weighting, a one-milliwatt, 1000 Hz tone will read +90 dBrn, but the same power as white noise, randomly distributed over a 3 kHz band will read approximately +88.5 dBrn, because of the frequency ...

  3. Reference noise - Wikipedia

    en.wikipedia.org/wiki/Reference_noise

    Many different levels with a number of different weightings are in current use, and care must be taken to ensure that the proper parameters are stated. Specific ones include: dBa , dBa(F1A), dBa(HA1), dBa0, dBm , dBm(psoph), dBm0 , dBrn , dBrnC , dBrnC0, dBrn(f 1 -f 2 ), dBrn(144-line), dBx.

  4. List of California area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_California_area_codes

    The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively. [1] As of July 2023, California has 38 active area codes.

  5. Area codes 310 and 424 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_310_and_424

    On December 31, 2005, customers began dialing 1 + area code + seven-digit number whenever a call is placed by a caller in the 310 or 424 area code to any other area code, including 310 to 424 or 424 to 310. After July 26, 2006, customers were required to use the new 1 + area code + seven-digit number dialing procedure for all calls, although ...

  6. Area codes 916 and 279 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_916_and_279

    Numbering plan areas in California (blue) and border states. This map is clickable; click on any region shown to visit the page for those area codes.Area code 916 is shown in red. Area codes 916 and 279 are California telephone area codes that serve Sacramento, the state capital, and most of its suburbs. Area code 916 was one of the first three ...

  7. List of California state symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_California_state...

    California red-legged frog Rana draytonii: 2014 [2] Animal: California grizzly bear Ursus arctos californicus: 1958 Bat: Pallid bat. Antrozous pallidus. 2024 [3] Bird: California quail Callipepla californica: 1931 [4] Colors: Blue and gold Blue represents the sky, and gold represents the color of the precious metal found by forty-niners in the ...

  8. Area codes 714 and 657 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_714_and_657

    This included most of Southern California, generally south and east of Los Angeles, extending to the Arizona and Nevada state lines to the east, and south as far as the Mexican border (what is now area codes 442/760, 619, 858, 909, and 951). Despite Southern California's growth in the second half of the 20th century, this configuration remained ...

  9. List of California state agencies - Wikipedia

    en.wikipedia.org/wiki/List_of_California_state...

    The CA Department of Food and Agricultural (CDFA) and the CA Department of Corrections and Rehabilitation (CDCR) are also led by secretaries, not department directors. Several departments, such as CDFA and CDCR, report directly to the Governor and their chief executive officers are members of the Governor's cabinet.