Site Radiation Assessment

Site Radiation Assessment

The ACMA requires each site owner / apparatus license holder / broadcast license holder to be aware of the need to comply with Radiated RF Emissions standards associated with their equipment.
The level of raditation permitted is outlines by the ARPANSA standard the Radiation Protection Standard for Maximum Exposure Levels to Radiofrequency Fields – 3 kHz to 300 GHz.
This is referenced by the ACMA document Radiocommunications Licence Conditions (Apparatus Licence) Determination 2015.
The ACMA document requires the licensee to either calculate or measure the Electromagnetic Radiated power associated with their equipment.
Other relevant documents referenced by the above are the Australian Standards AS/NZS 2772.1 and AS/NZS 2772.2

LEVEL 1

This first stage of the EME assessment can be considered to be Level 1 where the for a known licenced power at a minimum height above ground level the EME Level will be below the permitted “General Public Limit”.

LEVEL 2

This second stage of the EME assessment can be considered to be Level 2 where the EME Level is calculated for a known licenced power at a minimum height above ground level for a given antenna pattern for the type of antenna licensed and used.

LEVEL 3

This third stage of the EME assessment can be considered to be Level 3 where the EME Level is measured to confirm the calculated permitted “General Public Limit”.

The calculation below is an example of typical “broadcast” EME calculations as these EME limits are different for other types of transmissions.
If designing your own site requirements please source the current and up to date regulatory documents and make you own calculation or engage a qualified engineering person to provide written advice.

This calculator is not a substitute for written advice and is therefore used as is and without any implied warranty.

Example EME Limits Calculator for Broadcast Transmissions

(FM and STL bands ONLY)

Site Details

( Enter / Update )

Site Name:
System Frequency: MHz
Licensed Radiated Power (ERpd) (Dipole Reference): Watts ERPd

Antenna Details

( Enter / Update )

Antenna Manufacturer:
Antenna Element / Bay Model:

Antenna System Details

( Enter / Update )

Maximum Tower / Mast Height Above Ground Level: metres AGL
Antenna Lowest Height Above Ground Level: metres AGL
Maximum tower to site boundary distance: metres
Antenna Type:

Site Assessment Report

Site Name:
System Frequency: MHz
Licensed Power (ERPd): Watts ERPd
EME Public Limit in use: W/m^2
EME Occupational Limit in use: W/m^2
Tower / Mast Maximum Height: metres AGL
Antenna Distance to top element upper touch point:
Antenna Distance to bottom element touch point: metres AGL
Antenna Array Aperture Height:
Tower Specification:

Notes

Maximum Power rating for RG213 cable is 250 watts taking into account environmental de-rating.
The limit of transmitter power for cable power dividers is 250 watts.
RF Works is unable to take liability for your calculations.
Please contact RF Works for any further detailed advice.