RSS-118 — Addendum
Gazette Notice SMEP-011-90
(PDF, 56 KB, 3 pages)
Gazette Notice SMEP-011-90
Department of Communications
Radiocommuncation Act
September 1, 1990
Radio Standards Specification (RSS) 118, Issue 2
"Radio Standards Specification (RSS) 118, Issue 2 (for Land and SubscriberStations: Voice, Data and Tone Modulated, Angle Modulation Radiotelephone Transmitters and Receivers operating in the cellular mobile bands 824-849 MHz and 869-894 MHz)."
The Department of Communications has received comments which necessitated further clarifications to the minimum performance standard for the transmit audio frequency and limiting response, Table 1, and Figure 3 of Issue 2 of Radio Standards Specification (RSS) 118, released May 19, 1990. An addendum has been prepared incorporating these clarifications. Subsequent printings of RSS-118, Issue 2 will include the revisions.
Copies of the RSS 118 Issue 2 and/or the addendum may be obtained on request from Department of Communications, 300 Slater Street, Ottawa, Ontario, KlA 0C8, attention DOS-PP, or from the Regional Offices located in Vancouver, Winnipeg, Toronto, Montreal and Moncton.
Dated at Ottawa, this 15th day of August 1990.
S.N. Ahmed
Director General
Engineering Programs
Issue 1 of Addendum to Radio Standards Specifiation (RSS) 118
This addendum clarifies the minimum performance standard for the transmit audio frequency and limiting response, Table 1, and Figure 3 of issue 2 of Radio Standards Specification (RSS) 118, released May 19, 1990.
Replace Section 7.5.3, Table 1, and Figure 3 with the following:
7.5 Transmit Audio Frequency and Limiting Response
7.5.3 Minimum Performance Standard
Over the frequency range 300 to 3000 Hz, the input level to maintain a constant ±2.9 kHz system deviation shall not vary more than +3 to -1 dB from a true 6 dB/octave pre-emphasis characteristic (with the exception of a permissible 6 dB/octave roll-off from 2500 to 3000 Hz relative to the true level at 2500 Hz), see Figure 3.
Between 3000 Hz and 20,000 Hz the response attenuation shall not exceed the values defined by Table 1.
| Frequency Band | Attentuation Relative to the Maximum Value Allowed at 3000 Hz |
|---|---|
| 3000 - 5900 Hz | 40 log10 (f/3000) dB |
| >5900 - <6100 Hz | 35 dB |
| 6100 - 15000 Hz | 40 log10 (f/3000) dB |
| >15000 - 20000 Hz | 28 dB |
Where f is in Hertz
Figure 3 - The Input Level to Maintain a Constant System Deviation
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