decibel milliwatt
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thumb|A schematic showing the relationship between dBu (the [[voltage source) and dBm (the power dissipated as heat by the 600 Ω resistor)]] dBm or dBmW (decibel-milliwatts) is a unit of power level expressed using a logarithmic decibel (dB) scale respective to one milliwatt (mW). It is commonly used by radio, microwave and fiber-optical communication technicians & engineers to measure the power of system transmissions on a log scale, which can express both very large and very small values in a short form. dBW is a similar unit measured relative to one watt (1000 mW) rather than a milliwa
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Within Vinony's link graph, decibel milliwatt is referenced by 75 other articles, and connects out to logarithmic scale, watt and decibel.
It sits within the topics Logarithmic scales of measurement, Radio frequency propagation and Units of power.
Its subject is documented across 19 Wikipedia language editions.
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thumb|A schematic showing the relationship between dBu (the [[voltage source) and dBm (the power dissipated as heat by the 600 Ω resistor)]] dBm or dBmW (decibel-milliwatts) is a unit of power level expressed using a logarithmic decibel (dB) scale respective to one milliwatt (mW). It is commonly used by radio, microwave and fiber-optical communication technicians & engineers to measure the power of system transmissions on a log scale, which can express both very large and very small values in a short form. dBW is a similar unit measured relative to one watt (1000 mW) rather than a milliwatt.
The decibel (dB) is a dimensionless unit, used for quantifying the ratio between two values, such as signal-to-noise ratio. The dBm is also dimensionless, but since it compares to a fixed reference value, the dBm quantity is an absolute one.
Excerpted from Wikipedia’s “decibel milliwatt” article, available under the CC BY-SA 4.0 licence.