BPR-1 — General Rules
Annex C – Radio Exposure Compliance Distances for Low-power (LP) and Very Low-power (VLP) Undertakings
If the applicant can demonstrate that the general public cannot access the area surrounding the transmitting antenna delimited by the distance given in this table, said applicant will be exempt from the analysis required in Section 8. This table is based on the following three assumptions:
- Single polarization was used in deriving values
- The overall contribution from other radio apparatus in the vicinity is considered non-significant
- “Distance from Antenna in Metres” is the distance from the centre of radiation of the antenna to any point
|Broadcasting Service||Distance from Antenna in Metres|
|Low‑power AM (electrical height below 60 degrees)||14.5|
|Low‑power AM (electrical height 60 degrees or above)||4|
|Very Low‑power FM||2.3|
|Low power Television ‑ Channel 2 to 6 (analog)||7.2|
|Low power Television ‑ Channel 7‑13 (analog)||14.4|
|Low power Television ‑ Channel 14‑51 (analog)||43.6|
|Very Low power Television ‑ Channel 2 to 6 (analog)||4.1|
|Very Low power Television ‑ Channel 7‑13 (analog)||4.1|
|Very Low power Television ‑ Channel 14‑51 (analog)||7.8|
|Low power Digital Television ‑ Channel 2 to 6||13.8|
|Low power Digital Television ‑ Channel 7 to 13||17.6|
|Low power Digital Television ‑ Channel 14 to 51||31.5|
Note: Calculated distance is based on 50% of Safety Code 6 limits for uncontrolled environments using the modified free-space propagation model.
This is to inform you that [company name] has applied to Innovation, Science and Economic Development Canada (ISED) and the Canadian Radio‑television and Telecommunications Commission (CRTC) for the authority to [operate a new or to modify an existing] [AM / FM / TV / DTV / /S‑DARS] station to serve [community name]. The transmitting facility, which will be located in your community, includes a [new antenna‑supporting structure at / modification to the existing antenna‑supporting structure located at ].
This is also to inform you that requirements set out in CPC‑2‑0‑03 for the [new/modification of the] transmitting facility will be fully complied with before any construction begins. However, our project is part of the CRTC public hearing process and is dependent upon CRTC approval. Therefore, we prefer to fully implement the full consultation process only if we receive a favourable ruling from the CRTC in regards to our application. Please be advised that ISED will not issue the authority for construction until we have completed any and all consultation processes required under CPC‑2‑0‑03.
If you have further questions or comments, please contact [name], at [contact information]. [The CRTC public hearing for this application is scheduled for ].
Designated Corporate Officer or Individual Applicant
The “.pat” antenna files are ASCII files that can be created or edited with any text editor or word processor. The files store a combination of angular positions and pattern attenuation values. Antenna attenuation can be given either as dB values or as relative fields. Both azimuth and elevation pattern values can be stored. In order to do a proper normalization of the antenna patterns for calculation, the angles of maximum radiation must be included. Interpolation is performed for azimuth or elevation angles that are in between angular positions given in the file.
The file format is as follows:
'Antenna Name', GAIN, PATVAL
ELA(1, NELVAL), ELPAT(1,NELVAL)
ELA(NUM_ELPAT,NELVAL), ELPAT (NUM_ELPAT,NELVAL)
'Antenna Name': The name of the antenna, limited to a maximum of 20 characters and enclosed in single quotation marks. The name is used to uniquely identify the antenna.
GAIN: The maximum gain of the antenna in dBi. Optional value which is not used in calculations.
PATVAL: This number indicates whether the tabulated pattern data is given as relative values or in dB. PATVAL = 1 for relative field; PATVAL = 2 for dB (with negative sign).
AZA (1..N): Azimuth angles for azimuth pattern values. These need to be in ascending order in the file. Maximum azimuth increment is 45°.
AZPAT (1..N): Azimuth pattern value in relative field as a decimal fraction, or in dB, depending on the value of PATVAL.
N: Total number of azimuths listed in the file, limited to a maximum of 721 points.
999: A special code which separates the azimuth plane from the elevation plane antenna data.
NUM_ELPAT: Number of elevation pattern descriptions, limited to a maximum of 72 “sections”.
NELVAL: Number of elevation pattern values that are specified for each elevation section, limited to a maximum number of 181 points per section. Each elevation section must use the same set of angles.
ELPAT_AZ: The azimuth in degrees for which the following elevation pattern is given. The value must be between 0 and 360 degrees, inclusive.
ELA: Elevation angle of which the elevation pattern is specified. The angles must begin above the horizon (positive sign) and progress to below the horizon (negative sign).
ELPAT: Elevation pattern value in relative field as a decimal fraction, or in dB, depending on the value of PATVAL.
A sample “.pat” file is listed below. The pattern values are listed in dB (PATVAL = 2), there are 26 azimuth values given and 2 elevation sections, each having 19 elevation values. The first elevation section is for 0 degree azimuth, the second cut for 180 degree azimuth.
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