User's Handbook

Roseville Tunnel PCS Band Selective Repeater
User Handbook
Handbook Nō.-55-151601HBK Issue No:-A
Date:-22/04/2005
Page:-
18 of 29
4.4 Low Noise Amplifier (11-006302)
4.4.1 Description
The 15dB gain low noise amplifier used in the unit is a double stage solid-state low noise
amplifier. Class A circuitry is used throughout the units to ensure excellent linearity over a
very wide dynamic range. The active devices are very moderately rated to provide a long
trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely
event of a failure, then the complete amplifier should be replaced.
4.4.2 Technical Specification
PARAMETER SPECIFICATION
Frequency range: 1700-1930MHz
Bandwidth: 200MHz
Gain: 15dB
1dB compression point: 31dBm
IP3: 44dBm
I/O return loss: >18dB
Noise figure: <1.3dB
Supply requirement: 10 – 24V, DC
Consumption: 560-590mA @ (10 – 24V)
operation: -10°C to +60°C
Temperature range
storage: -20°C to +70°
4.4.3 LNA ‘D’ Connector Pin-out details
Connector pin Signal
1 +Ve input (10-24V)
2 GND
3 Alarm RelayO/P bad
4 Alarm Relay common
5 Alarm Relay good
6 No connection
7 TTL voltage set
8 TTL alarm/0V (good)
9 O/C good/0V bad