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- DBrn abstract "The symbol dBrn or dB(rn) is an abbreviation for decibels above reference noise. Weighted noise power in dB is referred to 1.0 picowatt. 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 weighting. With 144 weightings, a one milliwatt, 1000 Hz white noise tone will also read +90 dBrn, but the same 3 kHz power will only read +82 dBrn, because of the different frequency weighting.".
- DBrn wikiPageID "41004".
- DBrn wikiPageRevisionID "579628297".
- DBrn hasPhotoCollection DBrn.
- DBrn subject Category:Mechanics.
- DBrn subject Category:Units_of_measurement.
- DBrn type Abstraction100002137.
- DBrn type DefiniteQuantity113576101.
- DBrn type Measure100033615.
- DBrn type UnitOfMeasurement113583724.
- DBrn type UnitsOfMeasure.
- DBrn comment "The symbol dBrn or dB(rn) is an abbreviation for decibels above reference noise. Weighted noise power in dB is referred to 1.0 picowatt. 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 weighting.".
- DBrn label "DBrn".
- DBrn sameAs m.0b7bk.
- DBrn sameAs Q5204450.
- DBrn sameAs Q5204450.
- DBrn sameAs DBrn.
- DBrn wasDerivedFrom DBrn?oldid=579628297.
- DBrn isPrimaryTopicOf DBrn.