User's Manual

Weehawken Tunnel UHF Repeaters

User/Maintenance Handbook

Handbook N.-Weehawken_UHF Issue No:-A

Date:-05/08/05

Page:-

50 of 72

7.8 Low Noise Amplifiers (11-007302 & 11-007402)

7.8.1 Description

The low noise amplifiers used are double stage solid-state low-noise amplifiers. Class A circuitry is

used in the units to ensure excellent linearity over a very wide dynamic range. The two 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 failure then the entire amplifier should

be replaced.

7.8.2 Technical Specification, 11-007302

PARAMETER SPECIFICATION

Frequency range: 380-500MHz

Bandwidth: <140MHz

Gain: 20-22dB

1dB Compression Point: +23.5dB (typical)

3rd order intercept: +36dB (typical)

Input/Output return loss: >20dB

Noise figure: <1.3dB

Connectors: SMA female

Supply: 200-230mA @ 24V DC

operational: -10°C to +60°C

Temperature range:

storage: -20°C to +70°C

Weight: 0.38kg

Size: 90 x 55 x 30.2 (case only)

7.8.3 Technical Specification, 11-007402

PARAMETER SPECIFICATION

Frequency range: 380-500MHz

Bandwidth: <140MHz

Gain: 30-32dB

1dB Compression Point: +22dBm (typical)

3rd order intercept: +34-35dBm (typical)