34 Base Station Specifications TB9300 Specifications Manual
© Tait International Limited August 2022
Analog Audio - General
Peak deviation
Narrowband
≤2.5 kHz
Nominal deviation selection
a
55% to 65% of peak deviation
Limiting deviation
b
94% of maximum system deviation
CWID deviation 40% of peak deviation
a. For a level of –10 dBm0 applied to the line input.
b. With modulation input driven at a frequency of 1 kHz, and 20 dB above the nominal level of 60% deviation.
Analog Audio - Modulation Characteristics
Frequency Response (G.711 to FM modulator)
Bandwidth (subaudible signaling
enabled)
Bandwidth (subaudible signaling
disabled)
Pre-emphasized response
Flat response
307Hz - 3kHz
134Hz - 3kHz
within +1, –3dB of a 6dB/octave pre-emphasis curve
(ref. 1kHz)
within +0.5, –1.5dB of output level at 1kHz
For more information, refer to “Appendix A Frequency
Response Diagrams” on page 54.
Distortion <2%
Hum and noise
d
Narrowband
–50 dB typical (ETSI)
d. Up to 5 dB degradation at extremes of switching range and temperature.
Analog Audio - CTCSS
Standard tones all 37 ANSI/TIA group A, B and C tones plus 13
commonly used tones
Frequency error (from ANSI/TIA tones) 0.08% maximum
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