26
Base Station Specifications
TB9400 Specifications Manual
© Tait Limited July 2017
1.6
Transmitter
The specifications in this section pertain only to the combination of a
TB9400 reciter with a 50W or 100W power amplifier.
General
Frequency bands
B3 band
H1 band
H2 band
H3 band
K4 band
148MHz to 174MHz
400MHz to 440MHz
440MHz to 480MHz
470MHz to 520MHz
762MHz to 776MHz and 850MHz to 870MHz
Modulation types
11K0F3E, 8K10F1E, 8K10F1D, 8K10F7W,
8K70D1W, 8K70D7W, 9K80D7W, 6K80D7W
Frequency increments
B3 band
H and K4 bands
2.5kHz and 3.125kHz
5kHz and 6.25kHz
Frequency stability
a
±0.5ppm –30°C to +60°C (–22°F to +140°F)
a. For K4 band (762MHz to 776MHz) the internal frequency reference accuracy is inadequate, and an external
reference must be used. The stability of this reference should be better than 100 parts per billion. See
“External
Frequency Reference Input (BNC)” on page 33.
Output load impedance
50
Ω
nominal
Output power
50W PA
Rated Power
Range of Adjustment
100W PA
Rated power
Range of adjustment
50W
5W to 50W in 1W steps
100W
10W to 100W in 1W steps
Output power accuracy
b
Within normal operating voltages and
temperatures
At extremes of temperature and altitude
+0.5/–0dB into a 50
Ω
load
+0.5/–1.5dB into a 50
Ω
load
b. Measured directly on PA output.
Peak-to-average power level
c
peak power is +2.7dB above average rated power
c. LSM and P25 Phase 2 only.
