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RSS -119 — Radio Transmitters and Receivers Operating in the Land Mobile and Fixed Services in the Frequency Range 27.41-960 MHz

Preface

Radio Standards Specification 119, Issue 11, Radio Transmitters and Receivers Operating in the Land Mobile and Fixed Services in the Frequency Range 27.41–960 MHz, replaces RSS-119, Issue 10, Land Mobile and Fixed Radio Transmitters and Receivers Operating in the Frequency Range 27.41–960 MHz, dated April 2010.

This document will be in force as of the publication date of Canada Gazette notice SMSE-007-11, after which the public has 120 days to submit comments. These comments will be taken into account in the preparation of the next version of the document.

Listed below are the changes:

  1. Requirements for equipment with a 25 kHz channel spacing and an occupied bandwidth greater than 20 kHz operating in the frequency bands 406.1–430 MHz, 450–470 MHz, 806–821/851–866 MHz and 821–824/866–869 MHz have been added.
  2. The requirement that equipment operating in the land mobile service in the frequency band 138–470 MHz meet the required spectrum efficiency has been clarified.

Issued under the authority of the Minister of Industry

space to insert signature
Marc Dupuis
Director General
Engineering, Planning and Standards Branch

1. Scope

This Radio Standards Specification (RSS) sets out requirements for radio transmitters and receivers for the land mobile and fixed services in bands allocated within the 27.41 MHz to 960 MHz range.

1.1 Exclusion

For the 27.41–28 MHz and 29.7–50 MHz bands, if the equipment's signal is amplitude modulated, RSS-125, Land Mobile and Fixed Radio Transmitters and Receivers, 1.705 to 50 MHz, Primarily Amplitude Modulated, is to be used for equipment certification.

1.2 Equipment Operating in the Land Mobile Service in the Frequency Bands 138–470 MHz

Within the frequency ranges 138–470 MHz, equipment in the land mobile service which operates with a channel bandwidth of more than 12.5 kHz shall be certified only if it is also capable of operating with a smaller channel bandwidth to meet the minimum spectrum efficiency of one voice channel per 12.5 kHz bandwidth (e.g. two voice channels per 25 kHz).

1.3 Equipment in the Bands 764–776 MHz and 794–806 MHz

Equipment in the bands 764–776 MHz and 794–806 MHz shall be eligible for certification until the implementation of the digital television (DTV) transition date, August 31, 2011.1 After that date, new equipment shall be certified only for the bands 768–776 MHz and 798–806 MHz.

2. General Information

Land mobile and fixed 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

The equipment covered by this Standard is subject to licensing, pursuant to subsection 4(1) of the Radiocommunication Act.

2.2 Related Documents

In addition to related documents specified in RSS-Gen, General Requirements and Information for the Certification of Radiocommunication Equipment, the following documents should be consulted:

  • TIA Standard 603-C
    Land Mobile FM or PM Communications Equipment Measurement and Performance Standards
  • TIA Standard 102.BAAA
    Project 25 – FDMA Common Air Interface – New Technology Standards Project – Digital Radio Technical Standards
  • TIA Standard 102.BABA
    Project 25 – Vocoder Description
  • TIA Standard 102.BAEA
    Project 25 – Data Overview – New Technology Standards Project – Digital Radio Technical Standards
  • TIA Standard 102.BAEB
    Project 25 – Packet Data Specification – New Technology Standards Project – Digital Radio Technical Standards
  • TIA Standard 102.BAEE
    Project 25 – Radio Control Protocol (RCP) – New Technology Standards Project – Digital Radio Technical Standards
  • SRSP-500
    Technical Requirements for Land Mobile and Fixed Radio Services Operating in the Bands 138–144 MHz and 148–174 MHz
  • SRSP-501
    Technical Requirements for Land Mobile and Fixed Radio Services Operating in the Bands 406.1–430 MHz and 450–470 MHz
  • SRSP-502
    Technical Requirements for Land Mobile and Fixed Radio Services Operating in the Bands 806–821/851–866 MHz and 821–824/866–869 MHz
  • SRSP-504
    Technical Requirements for Radio Paging Systems Operating in the Band 929–932 MHz
  • SRSP-505
    Technical Requirements for Multipoint Communications Systems Operating in the Bands 928–929/952–953 MHz and 932–932.5/941–941.5 MHz
  • SRSP-506
    Technical Requirements for Land Mobile and Fixed Radio Services Operating in the Bands 896–901 MHz and 935–940 MHz
  • SRSP-507
    Technical Requirements for Line-of-Sight Radio Systems Operating in the Fixed Service in the Bands 932.5–935 MHz and 941.5 MHz-944 MHz
  • SRSP-511
    Technical Requirements for Land Mobile and Radio Services Operating in the Bands 768–776 MHz and 798–806 MHz
  • SRSP-512
    Technical Requirements for Land Mobile and Fixed Radio Services Operating in the Band 220–222 MHz
  • SRSP – Standard Radio System Plan
  • TIA – Telecommunication Industry Association

Industry Canada documents (all of the above except the TIA documents) are available on the Spectrum Management and Telecommunications website at http://www.ic.gc.ca/spectrum, under Official Publications.

The TIA Standard can be obtained from the Telecommunications Industry Association website at http://www.tiaonline.org.

3. General Requirements

3.1 RSS-Gen Compliance

RSS-119 shall be used in conjunction with RSS-Gen, for general specifications and information relevant to the equipment for which this standard applies.

3.2 User Manual

If the radio terminal has a data port, the user manual shall contain the manufacturer's technical parameters for interfacing external data sources, as follows:

  1. the input voltage (volts peak-to-peak) required from a modem for proper modulation;
  2. the maximum recommended data rate; and
  3. the designed impedance for this port.

As well, the design impedances of all interface ports (i.e. voice ports, data ports, antenna terminals, etc.) should be stated in the user manual.

3.3 Test Reports

In addition to the requirements listed in RSS-Gen, the test report shall indicate whether there is a data port in the radio terminal.

3.4 Transmitter with External Frequency Selection Controls

In order to prevent radio interference caused by end-user transmissions on unauthorized frequencies, transmitters with external frequency selection controls and/or frequency programming capability shall conform to the following:

  1. Transmitters with external frequency selection controls shall operate only on authorized channels which have been preset by the manufacturer, equipment supplier, or service technician/maintenance personnel.
  2. Transmitters with frequency programming capability must have at least one of the following design characteristics, which prevent the user from altering the preset frequencies:
    1. transmitters with external controls available to the user can only be internally modified to place the equipment in the programmable mode. Furthermore, while in the programmable mode, the equipment is not capable of transmitting. The procedure for making the modification and altering the frequency program is not available to the user of the equipment; or
    2. transmitters are programmed for frequencies through controls inaccessible to the user; or
    3. transmitters are programmed for frequencies through use of external devices or specifically programmed modules made available only to service/maintenance personnel; or
    4. transmitters are programmed through cloning (i.e. copying a program directly from another transmitter) using devices and procedures which are available only to service/maintenance personnel.
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4. Measurement Methods

4.1 Transmitter Output Power

In conjunction with the measurement method described in RSS-Gen for the measurement of the output power, the transmitter shall be operated at the manufacturer's rated power and modulated with signals as follows:

  1. if the audio input signal is voice and the transmitter is FM, modulate the transmitter with a 2.5 kHz tone at a level 16 dB higher than that required to produce 50% of the desired frequency deviation.
  2. for non-FM transmitters, a signal representative (i.e. typical) of those encountered in a real system operation should be used. However, if the transmission is not continuous, this must be so indicated in the test report.

Measure and record the transmitter output power, using a measurement (resolution) bandwidth at least two to three times the occupied bandwidth for transmitters equipped with masks D and E to capture the true peak emission of the equipment under test. For transmitters equipped with other masks, a measurement bandwidth wider than the occupied bandwidth of the transmitter shall be used.

Note that, for transmitters which do not produce a full power unmodulated carrier, reference to the unmodulated carrier power refers to the total output power contained in the channel occupied bandwidth when the transmitter is modulated with signals representative of those encountered in a real system operation.

4.2 Transmitter Unwanted Emissions

In measuring the transmitter unwanted emissions, a sufficient number of sweeps must be measured to ensure that the emission profile is developed. If video filtering is used, its bandwidth must be at least three times the instrument resolution bandwidth.

4.2.1 Emission Masks B, C, G, I, J and L

Unwanted emission measurements can be in peak or averaging mode, provided that the total transmitter output power and the unwanted emission mask are measured and expressed in similar units.

Except where otherwise stated, on any frequency removed from the carrier frequency by more than 250% of the authorized bandwidth, a resolution bandwidth of at least 100 kHz must be used for frequencies to be measured below 1000 MHz, and at least 1 MHz must be used for frequencies to be measured above 1000 MHz. If a narrower resolution bandwidth is used, power integration can be applied.

4.2.2 Emission Masks D, E and Y

In order to show compliance with the emissions mask up to and including 50 kHz removed from the edge of the authorized bandwidth, adjust the resolution bandwidth to 100 Hz with the measuring instrument in a peak mode. For emissions beyond 50 kHz from the edge of the authorized bandwidth, the spectrum analyzer bandwidth shall be 100 kHz for frequencies below 1 GHz, and 1 MHz for frequencies above 1 GHz.

4.2.3 Emission Mask F

The unwanted emission shall be measured using the method as described in Section 4.2.2, but for emissions at a displacement frequency of less than 1.75 kHz, set the resolution bandwidth as per Table 8.

4.3 Adjacent Channel Power (ACP) Measurement for Equipment in the Bands 764–776 MHz and 794–806 MHz

The ACP measurements shall be made with a spectrum analyzer capable of making direct ACP measurements. For all measurements, modulate the transmitter signal as it would be modulated in normal operating conditions. For Time Division Multiple Access (TDMA) systems, the measurements are to be taken under TDMA operation only during time slots when the transmitter is active. All measurements are taken at the transmitter output port. If a transmitter has an integral antenna, a suitable power coupling device shall be used to couple the radio frequency signal to the measurement instrument. The coupling device shall substantially maintain the proper transmitter load impedance.

(1) Setting reference level

Set transmitter to maximum output power. Set the spectrum analyzer's measurement bandwidth to the channel size. For example, for a 50 kHz transmitter, set the measurement bandwidth to 50 kHz. Set the frequency offset of the measurement bandwidth to zero and adjust the centre frequency of the instrument to the assigned centre frequency to measure the average power level of the transmitter. Record this power level in dBm as the reference power level.

(2) Non-swept power measurement

Set the spectrum analyzer's measurement bandwidth and frequency offset from the assigned centre to the values as shown in the tables in Section 5.8.9 according to the equipment's channel size. With a resolution bandwidth less than 2% of the measurement bandwidth, measure the power level in dBm. These measurements shall be made at maximum power. The ACP measured in this step shall be lower than the reference power level as measured in (1) above by the amount greater than or equal to the absolute value of the maximum relative ACP given in the tables in Section 5.8.9.

(3) Swept Power Measurement

Set the spectrum analyzer to 30 kHz resolution bandwidth, 1 MHz video bandwidth and average detection. Set the reference level of the spectrum analyzer to the average value of the transmitter power. Sweep above and below the carrier frequency to the limits defined in the tables in Section 5.8.9 according to the equipment's channel bandwidth. The ACP measured in this step shall be lower than the reference power level as measured in (1) above by the amount greater than or equal to the absolute value of the maximum relative ACP shown in the tables in Section 5.8.9.

Footnotes

  1. back to footnote reference 1 Broadcasting Public Notice CRTC 2007–53, available at http://www.crtc.gc.ca/eng/archive/2007/pb2007-53.htm.
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