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Clean Wireless Audio LLC
RF Mic & Wireless IEM Signal Strength Calculator
Scroll down to define your system components and view results.
Enter values without units of measure.
Results are valid for impedance-matched components and line-of-sight links with no 1st Fresnel zone obstructions.

General Parameters

Enter Frequency
MHz
Enter Transmitter Output Power
Enter TX System Components' Impedance
Enter RX System Components' Impedance

TX Patch Cable

Enter TX Patch Cable Length
Select Cable Type
Calculate Patch Cable Connectors' Loss?
Select Connectors' Condition
TX Patch Cable Assembly Loss

TX Combiner

Enter TX Passive Combiner Loss
dB
Enter TX Active Combiner Gain
dB
OR: Enter TX Combiner AGC Power (optional)
Note:
Most IEM active TX combiners with AGC require Transmitter Output Power 25mW or greater.
Entering TX Combiner AGC Power will override Transmitter Output Power entry and omit TX Patch Cable Assembly Loss from all calculations.
Enter 0 to reset.

TX Other Loss or Gain

Enter Other TX Loss
dB
Enter Other TX Gain
dB
Enter Number of TX Inline Connector Adapters
Select Adapters' Condition
TX Inline Adapters' Loss

TX Antenna Cable

Enter TX Antenna Cable Length
Select Cable Type
Calculate Antenna Cable Connectors' Loss?
Select Connectors' Condition
TX Antenna Cable Assembly Loss

Antennas & Polarization

Enter TX Antenna Axial Gain
dBi
Select TX Antenna Polarization Type
Enter TX Antenna VSWR
: 1
TX Antenna Z Mismatch Loss
Enter RX Antenna Axial Gain
dBi
Enter RX Antenna VSWR
: 1
RX Antenna Z Mismatch Loss
Select TX & RX Antenna Polarization Alignment
Polarization Mismatch Loss

Free Space

Enter Free Space Distance
Free Space Loss
Enter Absorption Loss
Absorption losses are difficult to predict. However, reasonable estimations can be made:
10-25 dB; Bodypack antenna against clothing.
25-50 dB; Bodypack antenna against skin.
50-90 dB; Any antenna surrounded by tissue.
Leave value at 0 if unsure.
dB
Enter Multipath Loss
Multipath losses are extremely difficult to predict unless the exact positions and properties of all antennas and all physical objects nearby are precisely known and static.
Leave value at 0 if unsure.
dB

RX Antenna Cable

Enter RX Antenna Cable Length
Select Cable Type
Calculate Antenna Cable Connectors' Loss?
Select Connectors' Condition
RX Antenna Cable Assembly Loss

RX Multicoupler

Enter RX Passive Multicoupler Loss
dB
Enter RX Active Multicoupler Gain
dB

RX Patch Cable

Enter RX Patch Cable Length
Select Cable Type
Calculate Patch Cable Connectors' Loss?
Select Connectors' Condition
RX Patch Cable Assembly Loss

RX Other Loss or Gain

Enter Other RX Loss
dB
Enter Other RX Gain
dB
Enter Number of RX Inline Connector Adapters
Select Adapters' Condition
RX Inline Adapters' Loss

Numerical Results

TX System Loss (-) or Gain
RX System Loss (-) or Gain
Free Space, Polarization, Absorption, & Multipath Loss
Total Path Loss (-) or Gain
EIRP
EIRP
ERP
ERP
Received Power
Received Power
Received Voltage
Received Voltage
1st Fresnel Zone Max Radius
60% 1st Fresnel Zone Max. Radius
Free Space Wavelength (λ)

RSSI Sennheiser

I II
40
dBμV
30
20
10
0

RSSI Shure

RSSI Lectro

1000-
100-
10-
1 µV-