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The Radiocommunication Act stipulates that no radio apparatus that form
part of a broadcasting undertaking may be installed or operated without
a Broadcasting Certificate issued by the Minister of Industry Canada.
Pursuant to paragraphs 5( 1) (a) and (d) of the Radiocommunication Act,
the Minister is empowered to fix the terms and conditions of the
Broadcasting Certificate and to establish technical requirements and
standards in relation to broadcasting undertakings.

This document prescribes the required information for filing
applications for Broadcasting Certificates and specifies the technical
standards and requirements and the operational terms and conditions
applicable to broadcasting undertakings. The document consists of five
parts: Part I entitled "General Rules" sets out the technical
requirements and application procedures common to all broadcasting
undertakings. Parts II, III, IV and V set forth the specific
requirements applicable to AM, FM, TV and Digital Radio Broadcasting
(DRB) undertakings respectively.

Nothing in these documents should be construed as releasing certificate
holders from the obligation to conform to rules, regulations and orders
issued by municipalities or any other governmental organization
regarding the construction, operation, maintenance and renovation of
buildings and equipment.

The content of these documents notwithstanding, the Department may
authorize certain minor departures from the standards and operational
requirements specified herein when it is shown that the quality of
service will not be compromised and that harmful interference will not
occur.

Table of Contents Page

1. Application Procedure and Subsequent Action
1.1 Preamble
1.2 Preparation of the Submission by Qualified Personnel
1.3 Application Processing
1.4 Application for Call Signs
1.5 On-air Approval
1.6 Broadcasting Allotment Plans
2. Transmitting Antenna
2.1 Selection of Antenna Sites
2.2 Structural Adequacy of Antenna Towers and Antenna Supporting Structures 4
3. Preparation of Coverage and Frequency Re-use (FRC) Contour Maps
3.1 Preparation of Contour Maps
3.2 Notes
3.3 Map Requirements
4. AM, FM, OR TV Proposals Predicated on Release of Assigned
   Frequencies or on Changes to Existing Broadcasting Facilities
5. Requirements for Technical Operation of Broadcasting Transmitter
   Plants
6. Requirements for the Establishment of Auxiliary Transmitting
   Systems for AM, FM and TV Undertakings
6.1 Introduction
6.2 Definitions and Usage
6.3 Location of Main and Auxiliary Transmitters
6.4 Maintenance and Operation
6.5 Special Case Operations
7. The Assignment and Identification Requirements for AM, FM, TV and
   DRB Broadcasting Undertakings
7.1 Introduction
7.2 Assignment of Call Signs
7.3 Identification of Broadcasting Undertakings
8. Environmental Assessment Procedure and Exposure to Radio
   Frequency Energy Procedure
8.1 Environmental Assessment Procedure
8.2 Exposure to Radiofrequency Energy Procedure
8.3 Notification to Municipalities/Land-use Authorities
8.4 Departmental Processing
9. Requirements for the Selection of Transmitting Equipment
Appendix 1: Addresses of Headquarters and Regional Offices
Description of Regional Boundaries
Appendix 2: Tables to Predict the Location of Various Exposure
            Contours for AM Undertakings
Appendix 3: Preliminary Environmental Information, Municipal/Land-Use
            Consultation and Aeronautical Site Clearance
Attestation

1. Application Procedure and Subsequent Action

1.1 Preamble This Section establishes the procedure to be followed in
preparing and submitting the information required in support of
applications for broadcasting undertakings.

1.2 Preparation of the Submission by Qualified Personnel

1.2.1 The planning and the design of new broadcasting undertakings or of
changes to existing systems and the preparation of engineering briefs
submitted in support of applications for such designs or design changes,
constitute the practice of professional engineering. It is the
responsibility of the person signing the submission to comply with the
appropriate provincial legislation, insofar as the practice of
professional engineering is concerned. The Department requires that the
design of a proposed system and/or a proposed change to an existing
system be carried out under the responsible supervision of a
professional engineer who shall certify as to the adequacy of the design
by affixing his/her signature and stamp to the engineering brief.

1.2.2 It should be noted that when a submission has been found to be
incomplete, in that important information has been omitted and/or
inaccurate technical data has been found, lengthy delays in processing
the application have resulted. Such omissions and inaccuracies are often
due to an unfamiliarity with the Department's requirements. Broadcast
engineering consultants maintain a library of all pertinent information
in reference to design and assignment studies, and subscribe to the
Department's services which provides them with the current allotment
material.

1.2.3 The departmental Form 16- 653 entitled "Notice of Retention of
Broadcast Engineering Consultant" shall be filed when an engineering
consultant has been retained.

1.2.4 Where low power broadcasting undertakings, other than low power
DRB, are concerned, the Department may waive its requirement that the
technical submissions be prepared by broadcast engineering consultants,
provided qualified technical staff prepare and sign the submission.

1.2.5 All technical submissions for Digital Radio Broadcasting
Undertakings (DRB) shall be prepared by a broadcast consultant.

1.3 Application Processing

1.3.1 An application to the Department for a Broadcasting Certificate
shall be accompanied by an application to the CRTC for a Broadcasting
Licence. Failing the latter step, the application will be held for three
months after which it will be returned.

1.3.2 If during the examination of applications the Department finds
that the required information is missing, incomplete or incorrect, the
applicant and/or consultant will be so notified and the CRTC will be
advised accordingly. If the necessary information is not supplied within
a period of time specified in the Departmental letter (normally 30 to 45
days), the application will be returned.

1.4 Application for Call Signs

1.4.1 Application for a call sign for a new broadcasting undertaking
shall be made in writing at the time of the application for the
Broadcasting Certificate. For existing undertakings requesting a change
of call sign, an application is to be made in writing to the Department.

1.4.2 For each program in a DRB undertaking, the applicant shall request
a call sign.

1.4.3 A listing of unassigned call letters is available on request. The
rules pertaining to call signs are contained in Section 7, "The
Assignment and Identification Requirements for AM, FM, TV and DRB
Broadcasting Undertakings".

1.5 On-Air Approval

1.5.1 Following approval by CRTC and authorization by the Department and
before the start of construction, any changes to the approved proposal
(i.e. site, parameters, equipment etc.) shall be submitted to the
Department for authorization. The Department's District Manager shall be
kept informed of progress in construction.

1.5.2 Departmental permission is required for on-air testing. When the
construction is complete, notice of on-air testing for AM, FM and TV
shall be given to the District Manager at least three weeks (unless
otherwise specified in the letter of authority) prior to transmission
tests. For DRB, the on-air testing procedure is defined in Section C-4
of BPR-V.

1.5.3 The normal period for on-air testing is four weeks, three being a
minimum. If interference or others problems materialize, this period may
be extended pending satisfactory resolution of the problems. Barring
problems, on-air testing will terminate after four weeks.

1.5.4 Following successful on-air tests, the applicant's consultant
shall certify to the Department that the broadcasting undertaking is
ready to commence operation in accordance with the approved technical
submission and request permission to commence operation. For AM
broadcasting undertakings the certification shall be supported by a
Preliminary or Final Proof of Performance (except for low power
broadcasting undertakings). Failure to meet these requirements shall
terminate the on-air tests. This clearance does not include the
FM/NAVCOM compatibility analysis.

1.6 Broadcasting Allotment Plans

1.6.1 The Canadian Broadcasting Allotment Plans contain all current AM,
FM and TV channel allotments and assignments. The Allotment Plan for
Digital Radio Broadcasting contains the current terrestrial digital
radio channel allotments and assignments.

1.6.2 The Department, in its role as spectrum manager, may make changes
to the Canadian Broadcasting Allotment Plans, based on technical
considerations. Please note that a Broadcasting Certificate shall not be
construed as conferring any right to continued tenure in respect of the
channel assigned to the broadcasting undertaking.

2.Transmitting Antenna

2.1 Selection and Sharing of Antenna Sites
This Section sets out the requirements and guidelines to be followed in
the selection of broadcast antenna sites for the purpose of determining
if the site and its antenna structure( s) would constitute a hazard to
air navigation. It also cross-references other related technical
requirements pertaining to the selection of sites.
To avoid excessive number of antenna structures in any given area, the
Department expects applicants and antenna structure owners to work
cooperatively in reaching agreements which allow for and encourage the
sharing of antenna structures.

2.1.1 Clearance of the Site and Antenna Structures by Transport Canada 1

2.1.1.1 Antenna structures located near airports are a potential hazard
to aeronautical navigation. The particulars of each site and antenna
structure shall therefore be evaluated from the aviation point of view.
In selecting suitable sites, broadcast consultants should be guided by
the current policies and procedures of Transport Canada (TC) in this
matter.

2.1.1.2 The applicant shall report the action taken regarding the site
and structure clearance by completing Section D of the "Preliminary
Environmental Information, Municipal/Land-Use Consultation and
Aeronautical Site Clearance Attestation" reproduced in Appendix 3.

2.1.2 Availability and Suitability of the Land Applicants are urged to
investigate such matters as availability of power and communication
facilities at the proposed site, year round accessibility to technical
staff and to determine any other features of the site such as
environmental constraints or provisions for re-zoning that could have a
bearing on the establishment of the broadcasting undertaking at that
location, prior to submitting an application. The availability of the
site should be further assured by taking an option on the property
involved to minimize delays in implementing the undertaking.

2.1.3 Cross-References to other Rules Affecting Site Selection

 (a) Maximum and Minimum Field Strengths for Satisfactory Service to
     Metropolitan Areas (PART II, Section C-3)

 (b) Intermodulation and Cross-modulation Interference (PART II,
     Section C-11)

 (c) Antennas and Ground Systems (PART II, Section C-1)

 (d) Assessment and Control of Maximum Field Strength of FM and TV
     Broadcasting Undertakings (PART III, Section C-5).

 (e) Television Ghosting Interference (PART IV, Section C-7 and PART V,
     Section B-2).

 (f) Environmental Assessment and Exposure to Radiofrequency Energy
     (PART I, Section 8).

2.2 Structural Adequacy of Antenna Towers and Antenna Supporting
Structures To ensure structural adequacy, the Department recommends that
all antenna towers and antenna-supporting structures be designed,
manufactured and erected in accordance with accepted Canadian standards
and that a qualified structural engineer be retained by the applicant.

3. Preparation of Coverage and Frequency Re-use Contour (FRC) Maps
The engineering briefs in support of applications for new broadcasting
undertakings or for changes in facilities of existing undertakings shall
include contour maps as prescribed under the relevant broadcasting
application procedure. Reproducible maps shall also be included with the
application, as prescribed hereunder. The maps are used by the
Department for its technical evaluation of the proposal and reproduced
for circulation to broadcasting consultants, the CRTC, the broadcasting
industry and other interested agencies.

3.1 Preparation of Contour Maps
A reproducible copy of each contour map required shall be prepared in
the standard format size i. e. 37 cm x 28 cm (14" x 11").

3.1.1 The following is a summary of the requirements:

 (a) geographical co-ordinate information shall appear on at least two
     adjacent edges of maps supplied;

 (b) a dimensional scale shall also be clearly shown;

 (c) antenna location shall be plotted and marked with a cross with
     geographical co-ordinates clearly indicated as illustrated below:
      Antenna Location  51 E 51' 51" N. 99 E 30' 45" W.

 (d) all contours shall be labelled clearly. The preferred technique is
     to place labels along the contour lines, thereby avoiding arrows;

 (e) a title block, of dimensions 11.5 cm x 9.5 cm (4" x 3x"), shall be
     placed preferably in the lower right-hand corner. It should
     contain sufficient information to identify the proposal and should
     be stamped by a professional engineer entitled to practice in the
     province or territory concerned. An acceptable specimen is
     illustrated below:

     Name of Broadcasting Engineer Consultant
     Applicant's Name
     Proposed location of undertaking
     Call Sign
     Parameters of Proposed Operation (freq. or channel; average ERP; class;
      mode of operation, etc.)
     Date Map Prepared Stamp of Signature or Engineer Initials

 (f) in cases of proposed changes in facilities, a map showing
     comparative contours shall be submitted (see 3.3.1 (b) and 3.3.2
     (c)).

3.2 Notes

 (a) For most contour representations Natural Resources Canada (Surveys
     and Mapping Branch) maps shall normally be used in the submission
     with a scale consistent with the extent of the contour and the
     format required. However, should more up-to-date official
     Provincial Government maps be available, these may be used when,
     for instance, there is a particular significance in determining the
     latest metropolitan area limits.

 (b) Reproducible prints of computer-generated contour maps are also
     acceptable. It is possible to generate contour maps with a computer
     using a Geographical Information System (GIS) software together
     with a GIS database (i. e. a standardized digitized geographical
     base map). The GIS database used, whether it is a vector or raster
     type base map, must have the resolution and the level of details of
     a 1: 1,000,000 scale map as a minimum for contour maps. For site
     location maps, a scale of 1: 50,000 is required. If the GIS
     database used does not have this resolution, Natural Resources
     Canada maps or other types as referred in (a) are required.  The
     computer generated maps must have a representation, in terms of the
     level of details (or layers) and colour scheme, comparable to the
     Natural Resources Canada maps referred in a), and must be in
     accordance with the other requirements of BPR-I, Section 3. The
     scale must be consistent with the extent of the contour and the
     format required.

 (c) All map reproductions supplied shall be clear in all details
     ensuring that significant information is not hidden by labelling.

3.3 Reproducible Map Requirements
The following requirements are not applicable to low power AM, FM and TV
and very low power FM and TV applications.

3.3.1 For TV and FM Applications
The following reproducible maps are required:

 (a) one contour map bearing the title block defined in 3.1.1( e);

 (b) in case of change in facilities, one additional "comparative
     contours" map, showing the authorized and proposed Grade A and
     Grade B contours for the TV service, the 61 dBu contour for MDS-
     TV, or the authorized and proposed 3 mV/m and 0.5 mV/m contours
     for the FM service, with the above title block.

3.3.2 For AM Applications
The following reproducible maps each bearing the identification block
defined in 3.1.1( e), are required:

 (a) one copy of each contour map included in the engineering brief;

 (b) copies of a sufficient number of maps, to show with satisfactory
     precision the following proposed service coverage contours:

    (i) for daytime: the 25 mV/m, 5 mV/m and 0.5 mV/m contours;

   (ii) for night-time: the usable field strength (E ) contour, and if
        enclosed u within the E , the 25 mV/m and the 5 mV/m
        night-time contour (s); u

 (c) for changes in facilities, the maps in 3.3.2( b) shall show both
     the authorized and the proposed contours.

Each contour should be clearly labelled as to whether it applies to day 
or night operation or both. 3.3.3 For AM Final Proofs of Performance 

With the final proof of performance for an AM undertaking, the following contours shall be shown on one or two reproducible maps:

 (a) for daytime: 0.5 mV/m contour;

 (b) for night-time: usable field strength (E ) contour. u Both
     contours may be shown on the same maps if the E contour can be
     shown u with satisfactory precision.

3.3.4 For DRB Applications
A map showing the coverage area as required in Section C-2.4.6 of BPR V,
in accordance with Appendix 3 of that procedure.

4. AM, FM or TV Proposals Predicated on Release of Assigned Broadcasting
Frequencies or on Changes to Existing Broadcasting Facilities

4.1 Occasionally it may appear expedient to file an application for a
broadcasting undertaking predicated on a frequency which is not yet
available but is expected to become so, as a result of a change of
frequency or other changes at existing facilities.

4.2 The Department may accept an application for a Broadcasting
Certificate based on the above premises. However, technical
acceptability will be conditional on the release of the frequency or on
the implementation of the change in facilities at the existing
undertaking. Should this application be approved by the CRTC, the
implementation of the undertaking may not be effected until the
frequency has actually been vacated or facilities changed. In order to
minimize problems, coordination between all parties is encouraged. The
co-operation of all parties is required for the approval of the
application.

4.3 Under no circumstances will a proposal involving interference be
considered unless agreement has been reached with the undertaking( s)
involved.

5. Requirements for Technical Operation of Broadcasting Transmitter Plants

5.1 These requirements apply to AM, FM and TV broadcasting undertakings.
Operating criteria for DRB undertakings will be issued when
standardized.

5.1.1 The holder of a Broadcasting Certificate for a transmitter plant
is responsible for maintaining frequency, modulation, antenna radiation
patterns (directional and omnidirectional), and total power within
permitted tolerances at all times. This Section sets out the minimum
requirements for controlling, measuring and monitoring a broadcast
transmitter plant.

5.2 Compliance with the minimum requirements may be achieved either by
operating the plant under local control (attended) or under remote
control (unattended). If the plant normally is operated unattended via a
remote control system, and that system fails, the plant shall be
operated under local control until the remote control system is again
operative. When the operation is to be unattended, the applicant shall
so advise the Department in writing certifying that the requirements
outlined in this Section will be met.
The holder of a Broadcasting Certificate shall submit a description of
the technical facilities at his/her disposal enabling him/her to comply
with the minimum requirements specified hereunder. Details to be
included are described in Section 5.7.

5.3 Minimum requirements for controlling, measuring and monitoring of
transmitter plants are as follows:

5.3.1 Controls:

 (a) Carrier ON-OFF.

 (b) Selection of day and night power and/or radiation pattern selection
     where applicable.

 (c) Overload reset, if applicable.

5.3.2 Accurate Measurements:

 (a) Frequency: The carrier frequency shall be measured.

 (b) Modulation: Peak modulation under normal program conditions shall
     be measured.

 (c) Power: The power output of the transmitter shall be measured.
     Measurements shall be made of the RF current at the transmitter
     output or at the common point. For an AM transmitter with
     directional antenna( s), measurements shall also be made of the
     tower currents (or ratios) and phases for each radiation pattern
     certified.

5.3.3 Monitoring

During periods between accurate measurements, undertakings shall be
monitored either locally at the transmitter or remotely. Monitoring of RF
power (visual transmitter power for TV undertakings) may be interpreted
from either the direct method, or RF field strength. 

The minimum requirement is an indication from an "S" meter incorporated
into a suitable monitor receiver at the control point or an indication
from a fixed-tuned receiver of the signal strength during the
synchronizing peak for TV signals.  Rebroadcasting undertakings from which
the off-air signals are not available at the control point shall be
monitored by a person designated by the holder of the Broadcasting
Certificate. Communication between monitoring and control points shall be
available. 

Undertakings shall be capable of being monitored continuously as follows:

5.3.3.1 AM Undertakings

AM transmitters may be monitored with a fixed-tuned receiver. At the
control point there shall be available a means for monitoring modulation,
such as: 

- an audio level meter connected to the output of the receiver,

- an oscilloscope displaying the modulated RF signal,

- any other audible or visible signalling device which will indicate the
  level of modulation.

In all cases, the off-air program audio shall be available at the
control point for monitoring subjective quality and modulation.
For directional arrays, indication of additional antenna parameters may
be required at the control point.

5.3.3.2 FM Undertakings
For monitoring modulation, an audio level meter driven by the receiver
shall be visible at the control point, or an alternative audible or
visible signalling device which will indicate the level of modulation
may be used. The off-air program audio shall be available at the control
point for monitoring subjective quality and modulation; if applicable,
facilities shall also be provided for aural monitoring of stereophonic
and other signals.

5.3.3.3 TV Undertakings
Undertakings which have manned control facilities within reach of off-
air signals shall have at their disposal:

- a demodulated off-air TV signal together with picture and waveform
  monitors,

- a means of indicating the depth of the modulation of the visual
  carrier and,

- a means of monitoring aural program level and quality.

Monitoring of RF power of the aural transmitter may be interpreted from
transmission line power, voltage or current, plate current, or RF field
strength. Remote monitoring of aural RF power is not mandatory.

5.4 Measurements in 5.3.2 shall be logged and the logs shall be retained
for inspection by the Department for a minimum period of six years for
AM Undertakings and two years for others. Also, any significant plant
abnormalities and corrective action taken shall be logged.

Further, since it is the responsibility of the holder of the
Broadcasting Certificate to maintain the plant within permitted
tolerances at all times, if any parameter is out of tolerance at the
time of accurate measurements, then corrective action shall be taken and
more frequent measurements shall be made until the parameter is
controlled within tolerance.

5.5 Normally, measurements in 5.3.2 shall be made weekly. However, if
the broadcaster requests that accurate measurements be taken less
frequently, and can demonstrate to the satisfaction of the Department
that frequency, modulation and power remain stable, then the Department
may permit measurements to be made and logged less frequently.

5.6 The holder of a Broadcasting Certificate is responsible for ensuring
that the painting and lighting of antenna support structures are
maintained in accordance with current Transport Canada requirements.

5.7 Description of Technical Facilities
A description of technical facilities (in triplicate) shall be submitted
to the Director, Broadcast Applications Engineering prior to "on-air"
operation of any undertaking. The submission shall include:

5.7.1 Transmitter manufacturer, model and Departmental Technical
Acceptance Certificate (TAC) number. For the interim period, the
requirement for a TAC does not apply to digital radio transmitters.
However, DRB transmitters must conform with the technical requirements
of BPR-V, Appendix 2. The requirements of this section do not apply yet
to DRB undertakings 2 12

5.7.2 A list of equipment available for the accurate measurements
required in 5.3.2. If the measuring equipment does not normally remain
at the transmitter plant; its normal location and availability shall be
specified.

5.7.3 A list of equipment available for monitoring as in 5.3.3.

6. Requirements for the Establishment of Auxiliary Transmitting Systems
for AM, FM and TV Uundertakings 2

6. 1 Introduction

6.1.1 Many broadcasting undertakings find it expedient to provide
auxiliary transmitting systems to ensure continuity of service in the
event of failure of the main transmitting system or for periods of
maintenance. This action is in the public interest and every
encouragement is given to licensees to equip their undertakings in this
manner.

6.1.2 In order to comply with the provisions of the Radiocommunication
Act and international agreements, and to maintain a proper engineering
standard of equipment and installation, it has been found necessary to
promulgate the following requirements governing auxiliary transmitting
systems.

6.1.3 Authority is required for the installation and use of any
auxiliary transmitting system. Applications for authority to establish
alternate or standby facilities shall be made to the Director, Broadcast
Applications Engineering on departmental Form 16-251 "Application for
Authority to Establish an Auxiliary Broadcasting Transmitting System"
available for that purpose. Authority to establish an emergency
transmitting system shall be obtained from the local Industry Canada
District Manager.

6.1.4 Nothing contained herein relieves the licensee of his/her
responsibilities under the Radiocommunication Regulations relating to
the control of undertakings in a national emergency.

6.2 Definitions and Usage

6.2.1 Main Transmitter
A broadcasting transmitter in respect of which a Technical Acceptances
Certificat (TAC) has been issued with rated power output as authorized,
and which is primarily used to provide the service for which the
undertaking is licensed.

6.2.2 Auxiliary Transmitters

 (a) Alternate Transmitter: A broadcasting transmitter in respect of
     which a Technical Acceptance Certificate has been issued with the
     same rated power and electrical characteristics as the main
     transmitter and which is used alternately with the main transmitter
     to provide the service for which the undertaking is licensed.

 (b) Standby Transmitter: A broadcasting transmitter in respect of which
     a TAC has been issued which is used to maintain some continuity of
     service in the event of failure of the main or alternate
     transmitter. This transmitter may also be used during specified
     periods when maintenance is being carried out on the main
     transmitter. The power or the coverage required of a standby
     transmitter is specified in Section 6.3.2.

 (c) Emergency Transmitter: A broadcasting transmitter to provide some
     continuity of service when emergency conditions render impossible
     the continued use of main, alternate or standby transmitters. The
     maximum powers for these emergency operations for the various
     broadcasting services are as follows:

     AM Broadcasting - 250 Watts
     FM Broadcasting - 1 kW ERP
     Television - 1 kW ERP

Emergency transmitters, if not issued a Technical Acceptance Certificate
(TAC), shall comply with technical requirements dealing with frequency
tolerance, spurious, harmonic radiation and safety. It is strongly
recommended that these emergency transmitters comply with as many as
possible of the other requirements as well.

6.3 Location of Main and Auxiliary Transmitters

6.3.1 Main and Alternate Transmitters

Main and alternate transmitters shall be located at the main transmitter
site as shown on the Broadcasting Certificate and shall operate into the
antenna system which has been approved for the undertaking's power and
frequency. In all respects, the two transmitters shall be completely
interchangeable without measurable effect on the signal in any
direction.

6.3.2 Standby Transmitters
Standby transmitters may be located at either the main transmitter site,
or some other approved site and shall operate into either the main or
some other approved antenna system.

 (a) AM Operations: If the standby transmitter is located in a
     metropolitan area the power shall not exceed 250 watts.

 (b) FM Operations: The location and parameters of the standby operation
     shall be such that its 3 mV/m contour would enclose the principal
     population centre which the undertaking is licensed to serve.

 (c) TV Operations: The location and parameters of the standby operation
     shall be such that its Grade A contour would enclose the principal
     population centre which the undertaking is licensed to serve.

6.3.3 Emergency Transmitters
Emergency transmitting systems are not planned installations and their
necessity results from unforeseen circumstances beyond the control of
the undertaking licensee. The operation of such systems shall be limited
to a duration of two weeks. Authority may be obtained from the
Departmental District Office. Otherwise the provisions of Section 6.5
hereunder apply.

6.4 Maintenance and Operation
The requirements of Section 5 shall apply to alternate and standby
facilities. When alternate, standby or emergency transmitters are used,
a log shall be kept covering each operation with an explanation of the
circumstances and the necessity for such an operation.

6.4.1 Identification of Undertakings During Standby or Emergency
Operation

6.4.1.1 Undertakings shall identify hourly during times of standby or
emergency operation and shall include an indication that the undertaking
is operating with reduced power and with a different antenna location
where applicable.

6.4.1.2 Since AM broadcasting undertakings are used extensively as aids
to aeronautical navigation, it is very important that the exact
transmitter site be known. Therefore, when circumstances make it
necessary to operate an AM standby or emergency transmitter at a
location different from the main transmitter, the following information
shall be given in an announcement every fifteen minutes: the call sign
and nominal location of the undertaking; a statement to the effect that
a standby or emergency transmitter is being used; and a sufficiently
clear descriptive name for the actual transmitter location to identify
it as distinct from the main transmitter site. Example "CALL Podunk,
broadcasting from our standby transmitter located at our main studio in
the Forum Building in downtown Podunk".

6.5 Special Case Operations There may be exceptional circumstances
requiring the operation of auxiliary facilities other than described
herein. Such requirements shall be submitted to the Director, Broadcast
Applications Engineering, and will be dealt with on