User's Manual

Eclipse2 Technical Manual, 3-Aug-12 Page 6 of 17
Introduction
The Eclipse2 series is a Base Station designed for Conventional Analogue FM and Conventional
A
P
C
O P25 modes of operation. Internally, it is driven by software, allowing future firmware
releases to track the development of radio standards and add new modes.
Based on a DSP and RISC platform, the base station has a modular design, which provides
extensive flexibility for users. For example, it may act as a standalone transmitter/receiver, cross-
band repeater, and more. The built-in Ethernet port allows remote monitoring and control of all
operating parameters. Under software control, the centre-frequency can be arbitrarily tuned
across a band, within the limits of the installed receiver and transmitter submodules. A range of
available submodules allows The Eclipse2 system to cover most of the band from 66MHz to
941MHz.
A typical base station or repeater system includes a Reciter (Receiver & Exciter); an RF power
amplifier; and a switch mode or linear power supply. All the modules can be plugged into an RF
Technology standard 19 inch wide, 4U high, rackframe.
The Reciter can deliver enough RF output power to be useful as a point-to-point link, meaning an
external power amplifier may not be required in some configurations. This allows up to six Reciters
to be mounted into a single 19 inch rack.
Features
Specifications
General
Chan
nel Spacing 6.25kHz, 12.5kHz, 25kHz
Reference Frequency internal, or 5MHz, 10MHz, 12.8MHz external
Monitor speaker output: 3 watts @ 8 ohm
Microphone input: 6 mV RMS @200 ohm
Duty cycle: 100%
Power Supply: +13.8VDC +/-10% (Negative Ground)
Current Drain: 2A Max (with T150A installed with 5 Watt TX output power)
750mA Max with TX OFF
Operating temperature: -30°C to +60°C
Receiver
Frequency Spread: see Table 1.
Frequency Stability: +/-1ppm (-30°C to +60°C)
Frequency Step: 1Hz
IF frequency: 45 MHz
Sensitivity: 12dB SINAD @ -119dBm (0.25uV) RF Input
Selectivity: 80dB for 25kHz Channel spacing
75dB for 12.5kHz Channel spacing
Spurious Rejection: 90dB
Intermodulation: 85dB
Modulation acceptance: 7.5kHz for 25kHz Channel spacing
3.75 kHz for 12.5kHz Channel spacing