Radio Mobile Online - Online RF propagation simulation software
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Link Evaluation

After creation of a new Link the result is displayed in the Link Evalusation Window.

Radio link study 3
PI1APA (1)
Latitude 52.201564 °
Longitude 5.992506 °
Ground elevation 13.01 m
Antenna height 2.00 m
Azimuth 255.44 °
Tilt 0.21 °
(2) PI1APK
Latitude 52.176202 °
Longitude 5.833987 °
Ground elevation 64.44 m
Antenna height 2.00 m
Azimuth 75.31 °
Tilt -0.31 °
Radio system
TX power 20.000 W
TX line loss 3.00 dB
TX antenna gain 6.00 dBi
RX antenna gain 2.00 dBi
RX line loss 0.50 dB
RX sensitivity 0.50 μV
Propagation
Free space loss 96.65 dB
Obstuction loss 46.81 dB
Forest loss 2.86 dB
Urban loss 5.98 dB
Statistical loss 5.72 dB
Total path loss 158.02 dB
Performance
Distance 11.168 km
Frequency 146.000 MHz
Equivalent Isotropically Radiated Power 39.905 W
System gain 160.53 dB
Required reliability 70.000 %
E field 8.49 dBμV/m
Received Signal -110.51 dBm
Received Signal 0.67 μV
Received Signal 2 S-Unit
Fade Margin 2.51 dB
Sponsored by
Radio Amateur du Québec Inc.
Calculated by
Radio Mobile by VE2DBE
 

Link overview

This image shows thelink from site 1 to site 2.

Sites

This row shows all geographical information about the Sites that are used in this Link.

PI1APA (1)
Latitude 52.201564 °
Longitude 5.992506 °
Ground elevation 13.01 m
Antenna height 2.00 m
Azimuth 255.44 °
Tilt 0.21 °
(2) PI1APK
Latitude 52.176202 °
Longitude 5.833987 °
Ground elevation 64.44 m
Antenna height 2.00 m
Azimuth 75.31 °
Tilt -0.31 °

The following variables are used:

Variable Comment
Site Site name of site 1 (Left) Has a link to new tab with a Google Map and the site located on it.
Latitude Latitude in degrees.decemal-degrees
Longitude Longitude in degrees.decemal-degrees
Ground elevation Local ground height in meter above sea level (ASL)
Antenna height Antenna height above ground level in meters
Azimuth  Heading of the antenna in degrees
Tilt Tilt of the antenna in degrees. 0 degrees is level.

Radiosystem

The Radiosystem shows relevant information about the radio components of teh Link. These variables are used in the linkbudget.

Radio system
TX power 20.000 W
TX line loss 3.00 dB
TX antenna gain 6.00 dBi
RX antenna gain 2.00 dBi
RX line loss 0.50 dB
RX sensitivity 0.50 μV

The following variables are used:

Variable Comment
TX power Transmitter power in Watt
TX line loss Losses between transmitter and antenna in dB
TX antenna gain Gain of the TX antenna in dbi
RX antenna gain Gain of the RX antenna in dBi
RX line loss Losses between the antenna and the receiver in dB
RX sensitivity RX sensitivity expressed in μV

Propagation

The losses of propagation are here displayed.

Propagation
Free space loss 96.65 dB
Obstuction loss 46.81 dB
Forest loss 2.86 dB
Urban loss 5.98 dB
Statistical loss 5.72 dB
Total path loss 158.02 dB

The following variables are used:

Variable Comment
Free space loss Free space loss in dB between Site 1 and 2
Obstuction loss Loss as a result of objects that apear within the fresnel zone and cause obstruction
Forest loss Loss as a result of clutter with the type Forest that apear within the fresnel zone
Urban loss Loss as a result of clutter with the type Urban that apear within the fresnel zone
Statistical loss Statistical Loss
Total path loss  Sum of all losses

Performance

Performance
Distance 11.168 km
Frequency 146.000 MHz
Equivalent Isotropically Radiated Power 39.905 W
System gain 160.53 dB
Required reliability 70.000 %
E field 8.49 dBμV/m
Received Signal -110.51 dBm
Received Signal 0.67 μV
Received Signal 2 S-Unit
Fade Margin 2.51 dB

The following variables are used:

Variable Comment
Distance Distance between Site 1 and Sit 2 in Km
Frequency Frequency in MHz
Equivalent Isotropically Radiated Power Eirp in watt
System gain System gain in dB
Required reliability required reliability of the link in %
E field Fieldstrength in dBμV per meter
Received Signal received signale in dBm (50 ohm) micro volt (μV) or S-Units
Fade Margin Margin available to overcome fading in dB

Sponsors

Some links to make teh sponsors happy.

Sponsored by
Radio Amateur du Québec Inc.
Calculated by
Radio Mobile by VE2DBE

Map

A map that displays the link

 

The color of the line displays the quality of the link.

  • Green: The fading margin is above the treshold
  • Yellow: The fading margin is below the treshold
  • Red: Received signal is below the receive sensitivity of the receiver.
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