User's Manual

800MHz & VHF Cell Enhancers
Maintenance Handbook
H/book Number:-50-078001HBKM
Issue No:-
A
Date:-02/09/2004
Page:-
70 of 88
5.21 Simplex Squelch & AF Module (17-002802)
5.21.1 Description
The difference in signal levels between the paths means that the channel modules would
latch onto any signal in the band rather than a signal at the desired channel frequency. This
is achieved, in part, to having the de-sense module, (which is controlled by the Simplex Rx
squelch unit), apply maximum attenuation (via an AGC attenuator unit) to the downlink
path, when the uplink is active.
5.21.2 Technical Specification
PARAMETER SPECIFICATION
Frequency range: 80-260MHz
Bandwidth: 20MHz (tuned to spec.)
Maximum RF output: >5.0 Watt
Gain: 40dB
1dB compression point: +30dBm
3
rd
order intercept point: +40dBm
Noise Figure: 2.4dB
VSWR: better than 1.5:1
Connectors: SMA female
Supply: 1.8A @ 24V DC
operational:
-10°C to +60°C
Temperature
range:
storage:
-20°C to +70°C
Weight: 0.5 kg
Size: 167x52x25mm