HARRIS CORPORATION M803M Manuel D’Utilisation
VTac Vehicular Tactical Network —CHAPTER 8
Software Version OTP 5.07
M-803 Operator Manual 85
VTac Base Unit
The VTac Base Unit has the same transceiver and
digital controller components as the OpenSky Base
Station DCX, but in a VTac installation these
components only operate as needed, when enabled by
the subscriber.
digital controller components as the OpenSky Base
Station DCX, but in a VTac installation these
components only operate as needed, when enabled by
the subscriber.
When Extended Coverage is required, the VTac Base
Unit provides the extended connection between the
network and portable radios in the vicinity.
Unit provides the extended connection between the
network and portable radios in the vicinity.
When Scene-of-Incident coverage is required, the
VTac Base Unit provides communication between
subscriber devices at the scene.
VTac Base Unit provides communication between
subscriber devices at the scene.
RF Combiner
The RF Combiner provides the VTac Network with the
ability to create an ad hoc talk group for Scene-of-
Incident emergency communications.
ability to create an ad hoc talk group for Scene-of-
Incident emergency communications.
Extended Coverage
The VTac-803 can be used as a mobile base station to
ensure that portable radios are connected to the
network at all times, in-building, or out.
ensure that portable radios are connected to the
network at all times, in-building, or out.
Subscribers with VTac equipment can enable Extended
Coverage mode before leaving their vehicles to enter
buildings or spotty coverage areas, thereby assuring
signal strength to networked portables.
Coverage mode before leaving their vehicles to enter
buildings or spotty coverage areas, thereby assuring
signal strength to networked portables.
User Interaction
Extended Coverage requires subscriber activation.
Without interaction the subscriber’s mobile and
portable radios are served by the nearest network cell.
Without interaction the subscriber’s mobile and
portable radios are served by the nearest network cell.
By selecting Extended Coverage mode, the subscriber
activates the VTac Base Unit as a local cell on the
OpenSky network.
activates the VTac Base Unit as a local cell on the
OpenSky network.