User's Manual

VHF Headstation & In-Line Amplifiers
User Handbook
Handbook Nō.-50-127201FCC Issue No:-A
Date:-14/06/2005
Page:-
17 of 45
3.2 VHF In-Line Amplifier Description
The In-line amplifier is almost identical to the Headstation BDA except it has lower gain.
3.2.1 VHF In-Line Amplifier Electrical Specifications
PARAMETER SPECIFICATION
137-143MHz (Downlink)
Frequency range:
154-156MHz (Uplink)
Uplink channel frequency: 155MHz ±0.75MHz
Passband ripple: ±1.5dB
Gain: >30dB
Gain Adjustment: 0 - 30dB (in 2dB steps)
Uplink Power: >10Watts
Downlink Power: >10Watts
Downlink OIP3: +50dBm
Uplink OIP3: +45dBm
Downlink 1dB compression point: +38dBm
Uplink 1dB compression point: +35dBm
In-Band Spurious noise: <-36dBm (30kHz B/W)
Downlink: +37dBm
AGC:
Uplink: +34dBm
Noise Figure: <6dB
VSWR: better than 1.5:1
RF Connectors: N type, female
operational:
-10°C to +60°C
Temperature range:
storage:
-40°C to +70°C
1 Amplifiers
2 PSU
3 Door Intrusion
Alarms Fitted:
(volt-free contacts/TTL)
4 Over temperature