Memorandum of Understanding between l’Office de Radiodiffusion-Télévision Française and the Department of Communications of Canada (Saint-Pierre and Miquelon)

Spectrum Management
Terrestrial Broadcasting Agreements and Arrangements


All persons making use of this consolidation are reminded that the documents included herein are provided only for convenience of reference. This consolidation is for the guidance of those engaged in radiocommunications in Canada. The information contained in this document is subject to change without notice. While every reasonable effort has been made to ensure accuracy, no warranty is expressed or implied. For more details, please contact the Broadcast Applications Engineering Division.

The agreements and arrangements contained herein have been negotiated under the authority of the Government of Canada by the Department of Communications whose spectrum management and telecommunications programs have been transferred to Industry Canada.

Prepared by:

Industry Canada
Radiocommunications and Broadcasting Regulatory Branch
235 Queen Street
Ottawa, Ontario K1A 0H5

via email:

All spectrum publications are now available on the Internet at:

Publication Date: June 1997

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1. Purpose

This memorandum of understanding relates to the allotment and utilization of Television Channels  K4, K6 and K8 in System "K" in the French Territories of St. Pierre and Miquelon, and Television Channels  M7 to M13 in System "M" in Canada within 230 miles of St. Pierre and Miquelon, within the band 174 to 216 MHz. All allotments and assignments made in this area are to be notified as hereinafter specified. Allotments and assignments in Canada which are more than 230 miles from St. Pierre and Miquelon need not be notified except that in cases of unusual powers and antenna heights appropriate details may be exchanged for informational purposes. The memorandum of understanding set out herein states the basis upon which the French and Canadian authorities propose to consider responses to border area television channel allotments proposed by the authority of the other country. The appendices (Appendices I and II) and the tables (Tables  A and B and Tables  I to VIII) attached to this memorandum, form an integral part thereof.

2. Definitions

(a) Signatory

The word "Signatory" hereinafter used in the singular or in the plural means: l'Office de Radiodiffusion-Télévision Française, public establishment, whose head office is in Paris, France, with present address at 116 Avenue du Président-Kennedy,
The Department of Communications of Canada, whose head office is in Ottawa, Ontario, Canada, with present address at 100 Metcalfe Street (Berger Building), or both according to the context.

(b) Transmission Systems and Channels 

The transmission systems used are the "K" system for St. Pierre and Miquelon and the "M" system for Canada in accordance with the CCIT XIth Plenary Assembly (Oslo 1966) Document Volume V on Sound Broadcasting Television which provides 5 channels (K4K8) for the "K" system, each 8 MHz wide, and 7 channels (M7-M13) in the "M" system, each 6 MHz wide in the band 174 to 216 MHz.

(c) Allotment

An allotment is the provision of a specific channel for a particular community.

(d) Assignment

An assignment is the authorized use of an allotment for a station.

(e) Parameters

The parameters of an allotment or assignment are the effective height of the antenna above average terrain and the effective radiated power.

(f) Effective Radiated Power (ERP)

The effective radiated power is the product of the antenna input power and the antenna power gain relative to a half-wave dipole. If specified for a particular direction, effective radiated power is based on the antenna power gain in that direction only. The licensed effective radiated power is based on the average antenna power gain for each horizontal plane direction.

(g) The Effective Height of the Antenna Above Average Terrain (EHAAT)

The effective height of the antenna above average terrain is the height of the radiation center of the antenna above average elevation of the terrain from 2 to 10 miles from the antenna for 8 radials spaced evenly for each 45 degrees of azimuth starting with true north.

(h) Directional Antenna

A directional antenna is one whose radiation pattern in the horizontal plane deviates by more than 2 dB from the equivalent circle value.

(i) Standard Parameters

The standard parameters are:

  1. A transmitting antenna height (EHAAT) of 1000 feet.
  2. An effective radiated power (ERP) of 325 kilowatts.

(j) Standard Allotment

An allotment on which a station by virtue of geographical spacing to related allotments or assignments may operate with standard parameters qualifies as a standard allotment and may be notified to the other Signatory as such.

(k) Limited Allotment

A limited allotment is one on which a station is required to operate with less than standard parameters.

(l) Protected Contour

The protected contour, subject to the provisions listed below, is the 56 dbμ, contour (where dbμ, is decibels relative to 1 microvolt per meter) and the distances from a station's transmitter site to its protected contour are as shown in the attached Table I.

  1. The protected contour shall not be considered to extend beyond a ceiling of 52 miles.
  2. Although local topography may be taken into account in estimating the actual service area, the protected contour as determined from Table I shall determine the protection to be accorded by an assignment or allotment in the other country.
  3. Where the protected contour extends over a body of water, the shoreline within the protected contour and nearest to the protected allotment shall be treated as the relevant segment of the protected contour.

(m) Protection Ratios

The protection ratios at the protected contour are as follows:

Technically Related
Protection Ratio (db)
K4 - M7 45
K4 - M8 43
K6 - M9 47
K6 - M10 39
K8 - M12 38
K8 - M13 30

To simplify mutual sharing and protection in the 174-216 MHz band, the highest protection ratios for technically related channels have been chosen. It may be noted that for the purpose of this Memorandum there is no technical relationship, and therefore no protection is required, between Channel M11 and Channels K4, K6 and K8.

(n) Interfering Signal

Based on the above ratios the levels of the interfering signal at the protected contour shall not exceed the following:

Channels  Interfering Signal (dbu)
K4 - M7 11
K4 - M8 13
K6 - M9 9
K6 - M10 17
K8 - M12 18
K8 - M13 26

For these channel relationships, the distances from a transmitter site to the interfering signal employing F(50, 50)curves (Appendix I) are shown in Tables II to VII.

(o) Maximum Permissible Parameters

Maximum permissible parameters are the maximum values of EHAAT and ERP determined on the basis of mileage separations between technically related assignments or allotments using Table I and Tables II to VII in accordance with Section 4(b).

The maximum permissible ERP of an assignment on a standard allotment may not exceed 325 kilowatts in any azimuthal or vertical plane and the maximum permissible ERP of an assignment on a limited allotment may not exceed the value determined using Table I and Tables II to VII, in accordance with Section 4(b), in the pertinent azimuthal or vertical plane and 325 kilowatts in other directions.

(p) Polarization

Horizontal polarization shall be used.

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3. Basic Principles

(a) Allotments

Channels K4, K6 and K8 in St. Pierre and Miquelon and Channels M7 to M13 in Canada may be allotted in accordance with the procedures for protection and permissible interfering signal as outlined in this Memorandum.

(b) Directional Antennas

Directional antennas may be used by stations operating on a limited allotment to render protection to technically related stations. The radiation from a directional antenna may not exceed the notified radiation pattern value in any direction where the interference caused thereby would exceed that permitted for the limited allocation. In all other directions, the radiation may not exceed the notified pattern value by more than 2 db. In no case may the ratio of maximum to minimum fields of a directional antenna be greater than 20 db. Directional antennas may be used by stations operating on standard allotments, but their use shall not prevent future increases of radiation in the suppressed directions to 325 kilowatts.

(c) Transmitter Locations and Computation of Distances

Where transmitter sites have been established the distance shall be determined using the co-ordinates of the transmitter sites. If a transmitter site has not been established the co-ordinates of the main post office of the community involved shall be used, or in the event those co-ordinates cannot be ascertained, the co-ordinates of the center of the community shall be used.

The distance between reference points is considered to be the length of the hypotenuse of a right triangle, one side of which is the difference in latitude of the reference points and the other side the difference in longitude of the two reference points, and shall be computed as follows:

(1) Determine the difference in latitude and the difference in longitude between the two reference points. Convert these two differences into degrees and decimal parts of a degree.

(2) Determine the middle latitude of the two reference points to the nearest second of latitude (average the latitudes of the two points).

(3) Multiply the difference in latitude by the number of miles per degree of latitude difference obtained from Table VIII for the appropriate middle latitude (interpolate linearly). This determines the North-South distance in statute miles.

(4) Multiply the difference in longitude by the number of miles per degree of longitude difference obtained from Table VIII for the appropriate middle latitude (interpolate linearly). This determines the East-West distance in statute miles.

(5) Determine the distance between the two reference points by the square root of the sum of the squares of the distances obtained, i.e.

D = (La2+ Lo2)½


D = Distance in statute miles

La = North-South distance in miles from (3) above

Lo = East-West distance in miles from (4) above

In computing the above, sufficient decimal figures shall be used to determine the distance to the nearest mile.

4. Tables 

(a) Content of Tables 

(1) Table I

Table I shows the distance in miles to the protected contour as a function of EHAAT and ERP.

(2) Tables II to VII

Tables II to VII show the permissible ERP as a function of EHAAT and distance to the protected contour.

Note: A table has not been included for Channel  M11 relative to Channel  K4, K6 or K8 because there is no technical relationship between these channels.

(b) Use of Tables 

(1) Use Table I to determine the location of the protected contour of the existing assignment or allotment with due regard to Section 2(1).

(2) Using the distance from the proposed allotment to the protected contour of the existing assignment or allotment, refer to the pertinent table of Tables II to VII to determine the combinations of maximum permissible parameters which can be used.

(3) In Table I all parameters should be read to the nearest value listed and where a parameter falls midway between two figures, use the higher figure.

In Tables II to VII the distances to the protected contour should be read to the nearest figure. Where the EHAAT falls between the values shown the F(50, 50) curves should be used together with the interfering signal levels of Section 2 (n) to determine the permissible ERP's.

5. Allotment Plans

Tables A and B of Appendix II contain, respectively, the allotments made to the French Territories of St. Pierre and Miquelon and to the area in Canada within 230 miles of the Territories.

6. Notifications

Notification of changes in the Table of allotments and of station assignments shall be made by an exchange of documents between the Canadian Department of Communications and the Office de Radiodiffusion-Télévision Française as outlined below.

(a) Notification of Changes in the Table of Allotments

(1) All proposed allotments within the purview of this Memorandum shall be notified to the other Signatory. The recipient Signatory may within thirty days of receipt of a proposed allotment object thereto. The basis for the objection must be explained with as much particularity as the circumstances permit, in order that the proposing Signatory may have an opportunity to meet the stated objections by suitable amendment of the proposal. Proposed allotments to which timely objection is made shall be subject to further negotiation at the request of the proposing Signatory.

(2) The notifying Signatory shall specify whether the proposed allotment is a standard or limited allotment. In the case of a limited allotment the limitation shall be specified. The parameters of an allotment may be reduced at any time by the Signatory of the country in which the allotment is made by simply advising the Signatory of the other country.

(3) Proposed allotments which are not within the maximum permissble parameters set out in this Memorandum shall be subject to negotiation to establish their acceptability.

(b) Notification of Assignments

Notification of assignments shall be sent not later than 10 days following the grant of an authorization for a television station. The recipient Signatory shall have 30 days after the notification to object to the proposed assignment.

Notification of assignments shall set out the actual operating parameters which will be employed. These may be less than the maximum permitted for the allotment. The use of lower operating parameters initially shall not preclude the later use of parameters up to the maximum permissible in accordance with the protection requirements to allotments and assignments in effect at the time the proposed change to increased parameters is notified.

The notification shall contain the following:

  1. Transmitter location (City or Community Center).
  2. Longitude and latitude of transmitter location.
  3. Channel number.
  4. Channel frequency.
  5. Effective radiated power.
  6. Antenna.
    1. Height of radiation center above ground.
    2. Height of radiation center above sea level.
    3. Height of radiation center above average terrain (2-10 miles).
      • Omnidirectional ( )
      • Directional ( )
    if directional include pattern or azimuth of maximum ERP and ERP in the direction of a protected station in the other country.
  7. Call letters (may be subsequently notified).

7. Low Powered Television Stations

(a) Assignments and Notifications

Either Signatory may make assignments of low powered television broadcasting stations using transmitters with a peak power output not in excess of 10 watts, in the band 174-216 MHz, at locations in excess of 25 miles from the other country, without notification to the other Signatory. Such low powered stations proposed at locations closer than 25 miles shall be notified in advance and the recipient Signatory shall have thirty days to object to the notification.

(b) Conditions of Operation

These low powered stations may be assigned, on Channels M7 - M13 in Canada and Channels K4 - K8 in the French Territories of St. Pierre and Miquelon, on an unprotected basis and on the condition that they do not cause interference to the direct reception of television stations in the other country on protected allotments in accordance with this Memorandum. If interference is caused, the Signatory of the country in which the interfering station is established shall ensure that corrective measures are taken to eliminate the interference by changing channel or by closing down the offending station.

8. Duration and Termination of Memorandum of Understanding

The present Memorandum of Understanding is concluded for a period of five years effective from the date of signature. It will be renewed thereafter by tacit agreement for equal periods of time. It may be denounced by one or the other Signatory at the end of one of the five year periods subject to a previous notice of one year.

French version and English version signed at Paris, the fifth day of November 1971.

Allan Gotlieb

space to insert signature
Department of Communications
(original signed)

space to insert signature
Office de Radiodiffusion
Télévision française


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Appendix I

Television channels 7-13 and K4-K8 estimated field strength 

exceeded at 50 percent of the porential receiver locations for at least 50 percent of the time at a receiving antenna height of 30 feet (the long description is 

located below the image)
Description of Figure 1

The Figure in Appendix I is a graphic showing a set of curves which give in dBµV/m the estimated field strength exceeded at 50% of the potential receiver locations for at least 50% of the time for a receiving antenna height of 30 feet and a transmitter ERP of 1 kilowatt in the upper VHF band (channels 7-13). Each curve corresponds to a distance (between 1 mile and 260 miles). Each of these curves gives, for various Heights Above Average Terrain (HAATs), the corresponding estimated field strength at the given distance of the curve. The vertical axis is the estimated field strength and runs from -20 to +120 dBµV/m. The horizontal axis is the HAAT; its scale is logarithmic and runs from 100 to 10000 feet. There are 35 curves corresponding to the following distances (in miles): 1, 2, 3, 4, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 220, 240, 260.

Television channels 7-13 and K4-K8 estimated field strength exceeded at 50 percent of the porential receiver locations for at least 50 percent of the time at a receiving antenna height of 30 feet

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