TB9400 Specifications Manual
Base Station Specifications
35
© Tait Limited July 2017
1.9
Miscellaneous
1.9.1
Channel Details
1.9.2
Duplexer Attenuation Requirements
The following graph shows the attenuation requirements for duplexers
used with the base station. The dotted plot represents the attenuation
required in the Rx path at the Tx frequency, while the continuous plot
shows the attenuation required in the Tx path at the Rx frequency.
A 100W transmitter is assumed. The quoted attenuation will ensure not
more than 1dB receiver desensitization (from the specified sensitivity), and
has a 5dB margin built in.
1.9.3
Operating Temperature Range
Number of channels
1000
Channel change time
300ms
60
65
70
73
75
0
5
10
15
20
Rx path attenuation
at Tx frequency
Tx path attenuation
at Rx frequency
dB attenuation
offset frequency in MHz
Operating temperature range
–30°C to +60°C (–22°F to +140°F) ambient
temperature
a
a. Ambient temperature is defined as the temperature of the air at the intake to the cooling fans.
