A “Decibel” represents the power to which 10 must be raised to equal the value & can be + – 0 + ( above 1 ) – ( below 1 ) 0 ( equal to one ) Post navigation Alternative Radial Velocity Calculator to the Green Bank Observatory Radial Velocity Calculator Why do meteors detected by radio scatter appear not have Doppler shifts above 100 Hz but airplanes and satellites do?