HARRIS CORPORATION M803M Manuel D’Utilisation
CHAPTER 8—VTac Vehicular Tactical Network
84
M-803 Operator Manual
Software Version OTP 5.07
Hardware Components
The VTac-803 is a 4-piece array of hardware
components consisting of:
components consisting of:
•
An M-803 Full Duplex Trunk Mounted Mobile
Radio Unit (MRU), also known in this
configuration as the VTac Mobile;
Radio Unit (MRU), also known in this
configuration as the VTac Mobile;
•
A VTac Base Unit. This component brings the
communications interface and transceiver
functionalities of an OpenSky Base Station DCX
to the trunk of a patrol car;
communications interface and transceiver
functionalities of an OpenSky Base Station DCX
to the trunk of a patrol car;
•
An RF combiner;
•
A CH-103 Control Head located in the passenger
compartment of the vehicle controls the three
trunk-mounted components.
compartment of the vehicle controls the three
trunk-mounted components.
Additional Control Head units may be located
elsewhere in larger vehicles for user convenience.
elsewhere in larger vehicles for user convenience.
VTac Mobile Unit
The VTac Mobile provides the connection between the
OpenSky network, operator, mobile data terminal, and
the VTac Base Unit.
OpenSky network, operator, mobile data terminal, and
the VTac Base Unit.
As a mobile radio, it operates like a standard-
installation M-803, providing network communications
for a single vehicle through one or more CH-103
Control Head Units.
installation M-803, providing network communications
for a single vehicle through one or more CH-103
Control Head Units.
In a VTac installation, the VTac Mobile is connected to
the VTac Base Unit by a serial cable that conducts
voice and data between the two components.
the VTac Base Unit by a serial cable that conducts
voice and data between the two components.
One-Button Activation
Powering Up the VTac Mobile automatically enables
all the connected hardware components of the VTac
array. Unless they’re needed, though, the RF Combiner
and VTac Base Unit stand by in a quiescent state until
called on for use.
all the connected hardware components of the VTac
array. Unless they’re needed, though, the RF Combiner
and VTac Base Unit stand by in a quiescent state until
called on for use.