Document ID: chunk:federal_register_of_legislation:F2024L00255:reg:3
Version: federal_register_of_legislation:F2024L00255
Segment Type: reg
Provision Reference: reg 3
Character Range: 13721–15934

3  Calculation of propagation loss for device boundary criterion
 (1) Subject to this item, the propagation loss for a radiocommunications transmitter, at the mth increment on the nth radial (PL(lmn, Lmn)) is calculated using:
 (a) for a transmitter connected to an antenna that is located more than 6 metres above ground level – the method and parameters set out in section 2.2 of Recommendation ITU-R P.525-4 and section 4.5.2 of Recommendation ITU-R P.526-15; or
 (b) for a transmitter connected to an antenna that is located 6 metres above ground level, or lower – the method and parameters set out in section 2.2 of Recommendation ITU-R P.525-4 and section 3.2 of Recommendation ITU-R P.2108-0.
 (2) For the purposes of using the method set out in section 4.5.2 of Recommendation ITU-R P.526-15:
 (a) the height of the nominal radiocommunications receiver is taken to be 5 metres above ground level; and
 (b) the height of the transmitter above ground level is the height of the antenna for the transmitter; and
 (c) the height of a profile point is the average ground height of that point.

          Note: The procedure for determining the average ground height is provided in item 2 of Schedule 2 of the Radiocommunications (Interpretation – Technical Framework) Determination 2024.
 (3) For the purposes of using the method set out in section 4.5.2 of Recommendation ITU-R P.526-15:
 (a) the path profile in that method must be developed at 100 metre increments along each radial; and
 (b) the average ground height is worked out at each increment along the path profile.

          Note: The procedure for determining the average ground height is provided in item 2 of Schedule 2 of the Radiocommunications (Interpretation – Technical Framework) Determination 2024.
 (4) For the purposes of using the method set out in section 3.2 of Recommendation ITU-R P.2108-0:
 (a) the percentage of locations is 0.08%, and the correction is applied at only one end of the path; and
 (b) if the loss calculated using the method is less than 0 dB, the calculated loss value is taken to be 0 dB; and
 (c) if the loss calculated using the method is greater than 8 dB, the calculated loss value is taken to be 8 dB.