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RAC

The following text is quoted from the Industry Canada Strategis web site and is presented here as a RAC service.

"There are many facets to the Department's mission "to facilitate the development and use of world-class communications infrastructure, technologies and services". One of these is the goal "to provide timely and equitable access to radio-frequency spectrum by as many users and for as many uses as possible, with a minimum of interference". However, in spite of our best efforts, interference may occur."

"While Industry Canada at one time conducted investigations to identify and locate sources of radio interference, we no longer provide this service. The changing climate in government has caused us to re-examine our role, and consequently, we no longer provide those services that are non-essential or simply, more appropriately delivered by the private sector."


Radio Frequency Interference

Industry Canada has produced several regulatory and advisory documents which relate to interference. To help you determine which of these documents may be helpful to you, here are some definitions of the interference terms:

Degradation of Performance - An undesired departure in the operational performance of any device, equipment or system from its intended performance.

Electromagnetic Compatibility - The ability of an equipment or system to function satisfactorily in its electromagnetic environment without introducing intolerable electromagnetic disturbances to anything in that environment.

Electromagnetic Disturbance - Any electromagnetic phenomenon (or transmission) which may degrade the performance of a device, equipment or system, or adversely affect living or inert matter.

Electromagnetic Immunity - The ability of a device , equipment, or system to perform without degradation, in the presence of an electromagnetic disturbance.

Harmful Interference - An adverse effect of electromagnetic energy from any emission, radiation or induction that (a) endangers the use or functioning of a safety-related radiocommunication system, or (b) significantly degrades or obstructs, or repeatedly interrupts, the use or functioning of radio apparatus or radio-sensitive equipment.

Radio Frequency Interference - Any modification to the reception of sound or picture signals that make them unacceptable (includes Broadcast Interference - BCI, and Television Interference - TVI)

Radio-Sensitive Equipment - means any device , machinery, or equipment, other than radio apparatus, the use or functioning of which is, or can be, adversely affected by radiocommunications emissions.


Interference Policy Documents

Please send questions about documents to spectrum_pubs@ic.gc.ca

RIC-17 - Electromagnetic Immunity (Radio Sensitive Equipment): explains, in general terms, the responsibilities of Industry Canada, the consumer, the manufacturer, and the radio licensee, with respect to resolving electromagnetic immunity problems. It also provides service information on specific companies for consumers experiencing difficulties.  You can download the document from the Industry Canada Spectrum Management and Telecommunications web site.

EMCAB-2 - Criteria For Resolution of Immunity Complaints Involving Fundamental Emissions of Radiocommunications Transmitters: The Radiocommunication Act (1985) provides enabling powers to the Minister beyond those applicable under the Radio Act. These powers permit the Minister to make determinations regarding immunity-related interference complaints involving both Radio Apparatus and Radio-Sensitive Equipment (RSE), and to issue orders to resolve them. The purpose of this bulletin is to advise concerned parties of the purely technical criteria upon which such decisions will generally be based, should it be necessary for the Minister to intercede in the resolution of an immunity problem. The technical criteria themselves represent an essential guideline for the Department's inspectors, vital to ensuring consistent treatment of immunity problems country-wide. *** You can download the document from the Industry Canada Spectrum Management and Telecommunications web site.

CPC-3-14-01 - Determinations of Harmful Interference with Respect to Radio-Sensitive Equipment: Whereas EMCAB-2 sets out field strength values that may be used by inspectors to help to determine if a problem results from a transmitter's usage or from the consumer equipment's lack of immunity, this document sets out the areas of responsibility, and the roles of the complainant, the radio user, and the Department, as well as setting out a fee for making determinations of harmful interference. *** You can download the document from the Industry Canada Spectrum Management and Telecommunications web site.

*** The methodology of the two previous documents is being protested by RAC to Industry Canada, as their focus is purely on field strength, rather than placing the requirement for better immunity on the affected equipment. Their inclusion here is to inform our readers of their content, AS A RAC SERVICE to the Canadian amateur radio community, and should not be interpreted as an acceptance or endorsement of their methodology.


Spectrum Management and Interference Documents

Most of the "Cutting Through" series of documents are written for guidance of the affected consumer. One is written for the radio amateur or GRS/CB operator. All are easy to understand.

The descriptions of the documents was also obtained from the Industry Canada web site.


Cutting Through . . . Radio Interference

"In the event that interference should occur, Industry Canada has produced the following multimedia document entitled "Cutting Through Radio Interference". We hope the examples of interference pictures and sounds will enable you to identify the sources and correct the problems yourself. If professional assistance is required, you should seek out the services of a qualified radio technician."

"This document is in a first draft "Beta test" state and will be modified in the next few months. We intend to improve on the method used to demonstrate the various types of TV interference as well as other minor enhancements . . ."

Cutting Through . . . Various Solutions to Interference

"Radio and television signals can be distributed and transmitted in various ways. To ensure good reception, here are some methods to solve interference problems."

Cutting Through . . . Interference From Radio Transmitters

"This brochure is primarily for amateur and General Radio Service (GRS, commonly known as CB) radio operators. It provides basic information to help install and maintain your station so you get the best performance and the most enjoyment from it. You will learn how to identify the causes of radio interference in nearby electronic equipment, and how to fix it."

Cutting Through . . . Interference on AM and FM Radios

"As the use of transmitters, receivers and communication devices increases, so do the disruptions in signal reception. As a rule, FM receivers are less affected by crackling noises than AM receivers. Conversely, AM radio is not as susceptible to the signal reflection phenomena."

Cutting Through . . . Interference on a Variety of Electrical and Electronic Equipment

"Many commonly used devices are subject, in one way or another, to interference problems. These devices, some of which operate with radio frequencies, can easily pick up unwanted signals. The interference may appear as a variety of sounds - voices, crackling, buzzing, humming and clicking. In some cases, it may affect the operation of certain pieces of equipment."

Cutting Through . . . Interference on a Telephone

"The main problem affecting telephones is audio rectification. Do you sometimes feel like you're not alone on your telephone line? Do you hear unwanted voices or sounds?"

Cutting Through . . . Television Interference

"Television interference can come from several sources and take various forms. Before describing the characteristics of each type, let's run some basic checks."