Radiocalc - Convertisseur Radio Universel (tm)
Manual, Formulas, IS Units, Glossary
Besides classical functions and dB conversions, RadioCalc includes a converter of Power to field strength commonly used for EMC/EMS test-set-up. Also impedance can be represented as a function of reflection coefficient (somehow like an electronic Smith-chart). This and many other functions are obtained by clicking into the arrow of the "Conversion off" window.
Thanks to RadioCalc the different dB charts are obsolete by computing the ratios of Power (W) or Voltages (V) according to dB = 10*log(P2/P1) ou dB = 20*log(V2/V1). Just for a trial : type 100/10 (or just 10) and push the dB button as the 'W' mode is chosen, the result will be 10 dB, then choose the 'V' mode by clicking in the V button (in the Quick dB window) push again dB, the result is now 20 dB.
For power conversions and dBm calculations, please check that the appropriate Impedance is set. The reset value is 50 Ohms. For getting familiar with the powerful functions of Quick dB, just push 'C', then push for ex. the '4' on the RadioCalc, then push consequently all 10 buttons (dB, dBµA, dBµV…….) and see the result and try the same in the 'V' mode.
