Issue 1, February 2008
Spectrum Management and Telecommunications
Radio Standards Specification
Preface
Radio Standards Specification 112, Issue 1, Land Mobile and Fixed Equipment Operating in the Band 1670-1675 MHz,will be in force as of the publication date of Notice No. SMSE-006-08 in Canada Gazette, Part I. Upon publication, the public has 120 days to submit comments. The comments received will be taken into account in the preparation of the next version of this document.
Issued under the authority of
the Minister of Industry
Robert W. McCaughern
Director General
Spectrum Engineering Branch
1. Scope
This Radio Standards Specification (RSS) sets out requirements for the certification of transmitters and receivers for the land mobile and fixed services in the band 1670-1675 MHz.
2. General Information
Equipment certified under this standard is classified as Category I equipment and a technical acceptance certificate (TAC), issued by the Certification and Engineering Bureau of Industry Canada, or a certificate issued by a Certification Body (CB) is required.
2.1 Licensing Requirements
Equipment covered by this standard is subject to licensing, pursuant to subsection 4(1) of the Radiocommunication Act.
2.2 Related Documents
All Spectrum Management and Telecommunications publications are available on Industry Canada's website at http://www.ic.gc.ca/spectrum under Official Publications.
In addition to related documents specified in RSS-Gen, General Requirements and Information for the Certification of Radiocommunication Equipment, the following Industry Canada document should be consulted:
SRSP – Standard Radio System Plan
2.3 Definition of Bandwidth
Emission bandwidth is, for the purpose of this document, defined as the width of the signal between two points, one below the carrier frequency and one above the carrier frequency, outside of which all emissions are attenuated at least 20 dB below the transmitter power (i.e. -20 dBc), when measured with a resolution bandwidth of 1 percent (approximately) of the occupied bandwidth. In lieu of the -20 dBc bandwidth, the 99 percent emission bandwidth may be used.
3. General Requirements
3.1 RSS-Gen Compliance
RSS-112 shall be used in conjunction with RSS-Gen for general specifications and information relevant to the equipment for which this standard applies.
4. Measurement Method
4.1 Transmitter Output Power
Transmitter output power measurements shall be carried out before the test for unwanted emissions. The transmitter output power value obtained from this test shall be used as the reference level to determine the unwanted emission limits.
4.2 Transmitter Unwanted Emissions
The emission limits in section 5.5 shall be measured with the carrier frequency set at both the highest and lowest settable operating frequency permitted by the design of the equipment.
5. Transmitter and Receiver Standard Specifications
5.1 Band Plan
The band plan can be found in SRSP-514.
5.2 Types of Modulation
The devices shall employ digital modulation. The type of modulation used shall be reported.
5.3 Frequency Stability
The frequency stability shall be sufficient to ensure that the emission bandwidth stays within the authorized frequency block, when tested to the temperature and supply voltage variations specified in RSS-Gen.
5.4 Transmitter Output Power
The power shall be within ± 1.0 dB of the manufacturer's rated power.
Consult SRSP-514 for equipment's equivalent isotropically radiated power (e.i.r.p.) limits.
5.5 Transmitter Unwanted Emissions Limits
The power of any unwanted emissions in any 1 MHz bandwidth outside the frequency band 1670-1675 MHz shall be attenuated below the transmitter output power P (in watts) by at least 43 + 10 log10(P), dB. Compliance with this provision is based on the use of measurement instrumentation employing a resolution bandwidth of 1 MHz or less, but at least 1 percent of the emission bandwidth, provided that the energy is integrated over a 1 MHz bandwidth.
5.6 Receiver Spurious Emissions
Receiver spurious emissions shall comply with the limits specified in RSS-Gen.