Online Technical and HAM Radio Related Calculators.

Calculators

ERP Calc   VSWR   Pwr Density   V/A Calc   DB Conv

ERP Calculators, Coax Line Loss Calculators and Calculators of All Sorts.

 

  Effective Radiated Power and Coax Loss Calculator
Calculate Effective Radiated Power (ERP) With Known Transmission Variables:
Transmitter Output Power : W or kW
Frequency : MHz
Transmission Line Type :
Transmission Line Length : Feet
Antenna Gain : dBd (0 dBd=2.14 dBi)

=

W or kW
Hang in there, more coax types are coming!

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VSWR / Forward & Reflected Power
Calculate VSWR, Return Loss, etc. from Forward and Reflected Power:
Transmitter Forward Power : Watts
System Reflected Power : Watts
VSWR =
Reflection Coefficient =
Return Loss = dB
Match Efficiency = %
Net Transmission Loss = dB
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Volts per Meter and Power Density

Calculate Field Strength and RF Exposure in a Free Field

 

Power: W Transmit power in watts
Gain: dBi Antenna gain in dBi (2.14=Dipole)
Distance: m Distance from Radiator in meters
Value: V/m
dBuV/m
dBm/m2


*Note: This assumes network and radiator efficiency but should prove to be a good reference calculator nonetheless, especially in the far field.

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Voltage and Current Calculator

Calculate Voltage and Current at your Antenna's Feed Point!

Power or Watts to Volts and Current Calculator 

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Watts to dBm/dBW Converter

Convert power in watts to dBm and dBW 

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Last updated: on April 8, 2024