Solutions by Industry

Table: Volts to dBm to Watts

Table of effective power in dBm and watts given RMS voltage or peak-to-peak voltage.   Volts (RMS)   Volts (PEP) dBm (50ohm) Watts (50ohms) 1.000 2.83 -16.990 0.020 1.200 3.39 -15.406 0.029 1.440 4.07 -13.822 0.041 1.728 4.89 -12.239 0.060 2.074 5.87 -10.655 0.086 2.488 7.04 -9.072 0.124 2.986 8.45 -7.488 0.178 3.583 10.1 -5.904 […]

Filed under: Engineering | Posted on December 26th, 2012 by John Sonnenberg | No Comments »

Table: RF Power Density

RF Power Density vs Distance The RF power density at any distance from a transmitter that is radiating RF power will depend upon the antenna gain, power into the antenna, and the distance from the antenna.  The table below illustrates haw fast the RF power power density drops off given certain distances from the radiating […]

Filed under: Engineering | Posted on December 26th, 2012 by John Sonnenberg | No Comments »

Table: Miles to Kilometers

Miles to Kilometers Conversion Table   Miles km Miles km Miles km Miles km Miles km Miles km Miles km 0.1 0.16 3.1 4.99 6.1 9.82 9.1 14.65 12.1 19.47 15.1 24.30 18.1 29.13 0.2 0.32 3.2 5.15 6.2 9.98 9.2 14.81 12.2 19.63 15.2 24.46 18.2 29.29 0.3 0.48 3.3 5.31 6.3 10.14 9.3 […]

Filed under: Engineering | Posted on December 26th, 2012 by John Sonnenberg | No Comments »

Table: Coax cable attenuation

Coax cable attenuation. All coax cable looses power.  The amount of power loss in a coax cable depends upon the length of the cable, the type of cable, and the frequency it is being used at. The following tables are helpful for predicting the amount of signal loss through a coax cable.  For example, if […]

Filed under: Engineering | Posted on December 26th, 2012 by John Sonnenberg | No Comments »

Table: uV to dBm 50 and 75ohm

The following table lists RF power levels given various RMS voltages. It converts uV to dBm with either a 50 ohm load or 75 ohm load.   uV dBm (50ohm) dBm (75ohm) fW (50ohm) fW (75ohm) 0.050 -133.010 -134.771 0.050 0.033 0.055 -132.182 -133.943 0.061 0.040 0.061 -131.355 -133.116 0.073 0.049 0.067 -130.527 -132.288 0.089 0.059 0.073 […]

Filed under: Engineering | Posted on December 26th, 2012 by John Sonnenberg | No Comments »