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Moxa WLAN Calculator

Moxa WLAN Calculator

  • Link Budget Calculator
  • Free Space Loss
  • Fresnel Clearance Zone
  • Antenna Downtilt

After you enter your parameters (such as access points, antennas, cables, etc.), the calculator generates the required RX sensitivity and the estimated RX signal strength in the receiver end. Please make sure that the RX signal strength is higher than the RX sensitivity in order to maintain the wireless communication.


Note:
Calculated results provided on this site are for design references only. On-site verification is required to obtain actual values.

Device A

Model Name

{{selectedProductName_A}}

Frequency

MHz

Required RX Sensitivity

dbm

TX Power

dbm

Antenna Gain

{{currAntennaName_A}}

? dBi

RF Cable Loss

{{currCableName_A}}

? dB(Loss)

RX Signal Strength

dBm
Path

Distance

Free Space Loss (Path Loss)

{{freeSpaceLossShow}} (dB)

Reserved Safety Factor

dB

Under Device B Filter Mode, the system will filter out Device B condidates capable of realizing the target distance based on the Device A and Path parameters selected.

Maximum Transmission Distance

(Based on all aboved input values)

{{maxDistance}} {{currUnit}}

Device B

Model Name

{{selectedProductName_B}}

Frequency

MHz

Required RX Sensitivity

dbm

TX Power

dbm

Antenna Gain

{{currAntennaName_B}}

? dBi

RF Cable Loss

{{currCableName_B}}

? dB(Loss)

RX Signal Strength

dBm

You can change the distance and frequency values to calculate the free space loss.

Free Space Loss
Distance Frequency Free Space Loss
MHz
{{freeSpaceLoss2}} dB
Distance
Frequency
MHz
Free Space Loss
{{freeSpaceLoss2}} dB
Distance H1: Fresnel Zone Radius (meter) H: Theoretical Antenna Height (meter)
km {{height1}} {{theoreticalAntennaHeight}}
Frequency H2: Earth Bulge (meter) Minimum Antenna Height (meter)
MHz {{height2}} {{minimumAntennaHeight}}
Distance km
H1: Fresnel Zone Radius (meter) {{height1}}
H: Theoretical Antenna Height (meter) {{theoreticalAntennaHeight}}
Frequency MHz
H2: Earth Bulge (meter) {{height2}}
Minimum Antenna Height (meter) {{minimumAntennaHeight}}

If there is a significant difference in the heights of two sites, you can tilt the higher antenna at an angle downwards.

Free Space Loss
Distance Hb: Base Antenna Height Hr: Remote Antenna Height Tilt Angle
km
m
m
{{tiltAngle}}°
Distance
km
Hb: Base Antenna Height
m
Hr: Remote Antenna Height
m
Tilt Angle
{{tiltAngle}}°
  • {{c.name}}

Caution

Note: You can use this WLAN range calculator to easily calculate the theoretical transmission distance. This allows you to determine whether a given combination of wireless devices can achieve the desired transmission distance. This WLAN range calculator allows you to make informed decision when selecting antennas and devices for your wireless applications. However, the calculated results are based on the assumption that signals are transmitted in an unobstructed, line-of-sight environment without electronic interference. In an environment, various factors such as mismatched impedance, electronic noise, building obstruction, and reflected signals can impact wireless network performance. Thus, there might be differences between the calculated transmission distance and the actual distance in the field.