Document ID: chunk:federal_register_of_legislation:F2021L01154:reg:12:p3
Version: federal_register_of_legislation:F2021L01154
Segment Type: reg
Provision Reference: reg 12 (pt 3/4)
Character Range: 21860–24847

antenna height above ground level.
                      is the transmitter effective antenna height (in metres) as defined in Schedule 3, except:
                          if  < 1.5 metres, then = 1.5 metres; or
                          if  > 500 metres then = 500 metres.
      d(lmn, Lmn)     is the distance in kilometres between the location of the radiocommunications transmitter, (lt, Lt), and the mth increment on the nth radial (lmn, Lmn).

   2. The propagation loss for the mth increment on the nth radial (PL(lmn, Lnm)) is established as follows:
    Step 1: Calculate the parameters required:

   Step 2:  Calculate the propagation loss for the mth increment on the nth radial (PL(lmn, Lnm)):

        Note: The formulae in Step 1 and Step 2 use Modified Hata propagation from 'ERC Report 068', published by the European Conference of Postal and Telecommunications Administrations (CEPT) in 2000 and revised in 2002. ERC Report 068 is available, free of charge, from the European Communications Office Documentation Database at https://docdb.cept.org/home.

Schedule 3 Antenna height and average ground height
  (subsection 5(1), section 11, item 1 of Part 3 of Schedule 2)

Part 1  Effective antenna height of a transmitter
   1.  If:
         (a)                subject to item 2, hgt is the vertical height in metres of the phase centre of the fixed transmitter's antenna measured with an error of less than 5 parts in 100 and relative to the point:
             (i) located on the line of intersection between the external surface of the structure supporting the antenna and the surface of the ground or sea; and
             (ii) having the lowest elevation on that line; and
     (b)                subject to item 3, hs is the sum of:
             (i) the DEM-3S cell height of the location of the radiocommunications transmitter as defined in Schedule 1; and
             (ii) hgt; and
         (c)                 is the average ground height of the DEM-3S at each m-increment on each n-radial as calculated in accordance with Part 1;
    then the effective antenna height  is:
         (d)                except where paragraph (e) applies:  (as shown in Diagram 1);
         (e)                if  is less than : .
   2. For a group of radiocommunications transmitters, hgt is the greatest of the hgt for each individual transmitter in the group, calculated in accordance with this Part.
   3. If the seconds component of the latitude or longitude of the radiocommunications transmitter as defined in Schedule 1, plus 1.5, has a modulus of zero when divided 3, then hs is the sum of:
 (a) hgt; and
(b) the maximum height of the adjacent DEM-3S cells.
        Note Additional information for the purpose of calculating hs where the latitude or longitude of the radiocommunications transmitter as defined in Schedule 1 corresponds to a DEM-3S cell boundary is provided in the document titled 'Digital Elevation Model Interpretation' available, free of charge, on