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If transmitter power is increased from 200 Watts to 400 Watts how do you convert to Db form?
Decibels (db) is relative power, log base 2, times 3. Increasing power from 200 watts to 400 watts is doubling power, so the decibel change is +3 db.800 watts would be +6 db, 1600 watts would be +9 db, 100 watts would be -3 db, 50 watts would be -6 db, and so on.
Prove dbm plus dbm equals db?
The decibel scale is a logarithmic scale where each change in three dB represents a power factor change of two. (3 dB is power times two, 6 dB is power times four, 9 dB is power times 8, etc. Similarly, -3dB is power divided by two, -6 dB is power divided by four, etc.) Zero dB is assigned some arbitrary reference power. One example is 1 mV across 600 ohms. If you double the voltage into a constant resistance, the power quadruples, so 2 mV would be +6 dB, 4 mV would be +12 dB, etc. The letter after dB is the reference power. In the case of dBm, it means that 0 dB is 1 milliwatt, so 2 milliwatt is +3 dB, etc. There are many dB scales, such as dBa, used in sound measurements. Still, fundamentally, 3 dB is a doubling of power, -3 dB is a halving of power, so, for any arbitrary scale, say dBq, then saying +6dBq is saying a power four times higher than 0 dBq. In the end, dBm plus dBm is delta dB, with no scale.
What connector is used in RS-232 transmissions?
DB-25 D-Sub-9 or D-Sub-25
What is the dB rating for pain threshold?
If you mean the sound pressure level that causes pain, it is about 120 dB SPL.
How 3db dandwidth equals half power bandwidth?
"3 dB" is a nickname for "1/2 power". "1/2 power" in dB = 10 log(1/2) = 10 (-0.30103) = -3.01 dB
What is half as loud in db?
Half as loud in decibels is about a 10 dB decrease. For example, if a sound is initially at 70 dB, half as loud would be around 60 dB.
What is the loudness of a normal conservation?
A normal conversation has a loudness (decibels level) of about 60 dB. As iy approached 70 dB it would be come loud.
How many decibels is are fireworks?
140 dB A normal conversation is about 60 dB (Just to let you know how loud fireworks are)
How loud you can be?
100 dB
How loud is a avalanche in decibels?
A avalanche can range from 100 dB to 180 dB
How loud is 100 db?
100 dB is considered very loud and can cause hearing damage with extended exposure. It is approximately as loud as a chainsaw, a jackhammer, or a rock concert. It is recommended to use ear protection in environments with noise levels reaching 100 dB.
How loud is 94 dB?
94 dB is considered to be loud and can cause hearing damage with prolonged exposure. It is similar to the noise level of a motorcycle or a lawnmower at close range.
How loud are sound waves?
The loudness of sound waves is measured in units called decibels (dB). The range of decibels humans can typically hear without discomfort is around 0 dB to 120 dB. Sounds above 120 dB can cause hearing damage.
How loud is 1000 db?
That's the sound of the Earth disintegrating.
How loud in decibels is the m2 machine gun?
About 132 dB(A)
How loud is 45 - 50 decibels?
The sound pressure of 45 dB is about a quiet library and 50 dB is about an everage home.
How loud is 47 db?
47 dB is considered to be a moderate noise level, similar to the sound of a quiet conversation or background noise in a library. It is generally not loud enough to cause discomfort or disturbance.
