
26
Base Station Specifications
TB9300 Specifications Manual
© Tait International Limited August 2022
1.5
Receiver
General
Frequency bands
B2 band*
B3 band*
C1 band
C3 band
G4 band
H1 band*
H2 band*
H3 band*
H4 band*
H5 band
K4 band*
K8 band
L2 band
136 MHz to 156 MHz
148 MHz to 174 MHz
174 MHz to 193 MHz
216 MHz to 225 MHz
330 MHz to 380MHz
400 MHz to 440 MHz
440 MHz to 480 MHz
470 MHz to 520 MHz
380 MHz to 420 MHz
400 MHz to 470 MHz
794 MHz to 824 MHz
787 MHz to 788 MHz
896 MHz to 902 MHz
* Note that these frequencies have reached end-of-life, and whilst currently supported, are no longer available for
the TB9300. They are available for the TB9400, where B2 and B3 bands can be replaced by the B1 band.
Type
Triple conversion superheterodyne; first conversion is
analog, second is hybrid, and third is digital
Frequency increments
B and C bands
G, H, K and L2 bands
2.5 kHz and 3.125 kHz
5 kHz and 6.25 kHz
Switching range
B and C bands
H1, H2 & H3 bands
G, H4, H5, & K4 bands
±2 MHz
±5 MHz
Full band
a. The frequency range, measured from the tuned frequency, that can be used without needing to retune the front end or
recalibrate the RSSI. Bands with full switching range do not require manual tuning.
Input load impedance
50
Ω
nominal (VSWR < 2:1)
RF input protection
no degradation after 5 minutes exposure to
on-channel signals at +20 dBm (2.2 V)
Frequency stability
Internal reference
External reference
B band
H, C, and G bands
K and L2 bands
±0.5 ppm –30 °C to +60 °C (–22 °F to +140 °F)
±1 Hz ± multiplied accuracy of external reference
±1 Hz ± multiplied accuracy of external reference
±2 Hz ± multiplied accuracy of external reference
RSSI
≤
–125 dBm to –30 dBm