
TB9300 Specifications Manual
Base Station Specifications
41
© Tait International Limited August 2022
1.8.7
RSSI Output
1.8.8
Antenna Relay Output
The antenna relay output will be active when the base station transmits, if
the antenna relay is enabled in the WebUI.
Logic state:
Active low
Logic type:
Open drain transistor connection
Antenna relay operation applies to analog conventional mode when
using DMR firmware.
Parameter
Value
Unit
Configurable RF input range
-120 .. -60
dBm
Configurable output range
1 .. 4.5
V
Maximum output range Series 1
0.8 .. 4.6
V
Maximum output range Series 2
0.5 .. 4.9
V
Accuracy
+/- 300
mV
Response time
< 70
ms
Output impedance
100
Ohm
Electrical Characteristics
Parameter
Specification
Comments
Low voltage level
< 0.4 V
Antenna relay activated
High voltage level
0 to 30 V
Protection
Low level output current
< 250 mA
High level output current
< 100 µA at 30V