MX940 Base Station & Repeater
Technical Manual
© SPECTRA ENGINEERING
2022 Revision 1.0.0
2
In addition, the MX940 can be fitted with options, not being limited to the following:
Power supply
Duplexer
Batteries for power backup system.
Note: Not all options and features may be available at the time of order. Please also
refer to Spectra Engineering’s web site for software feature upgrades and additional
documentation as available.
1.1 Physical Description
The MX940 is a compact lightweight standard 19" rack mounting transceiver. It is
designed to mount horizontally in a 19" standard rack frame and occupies 2RU
(89mm). The depth of the unit is 330mm and the weight is less than 6kg.
The unit consists of four main sub assemblies, the main RF assembly, a Power
Amplifier Module, Logic controller and rear interface PCB's. These modules are
housed in sturdy steel case.
The MX940 features a high degree of RFI and EMI screening throughout the design
and construction. The receiver and exciter RF circuits are contained in solid
aluminium enclosure. The PA module is contained in a special compact and efficient
extrusion for minimum harmonic radiation. This design results in low conducted and
radiated emissions and minimal susceptibility to RFI and EMI.
User interface is via the rear panel sockets which includes a DC power in , USB and
Ethernet ports for software programming and upgrading.
