Satellite Transmitter; Rf Configurations (Base Or Repeater) - Futurecom PDR8000 Manual

Document 8K088X02 R5.0
PDR8000® Portable Digital Repeater Product Planner
Another potential use is connecting two stations together in a back-to-back configuration as
Figure
illustrated in 19, but only enabling one of the stations to repeat/transmit. This allows the
receive coverage area to be increased to the region covered by both receivers, and utilizes a
single transmitter to serve the entire area. This represents a low-tier means of increasing an RF
coverage area. Note that this solution does not include the "voting" function of a comparator
which would compare the received signals from both receivers and pick the best one to
retransmit. Instead, the transmitted signal is determined by the PTT Priority settings described
in 6.2.7.
This configuration is only supported for Deployment Profiles utilizing the V.24 wireline interface,
and thus only applicable to P25/digital operation (not analog).
5.1.3 S T
ATELLITE RANSMITTER
The Satellite Transmitter configuration allows PDR8000 to receive information from the system
infrastructure via the wireline V.24 interface, and deliver information over-the-air via the RF
transmitter. No RF receive functionality is available when configured in this mode; received RF
carriers are ignored.
This type of configuration might be deployed when irregular terrain or coverage patterns require
Transmit and Receive functions to be separated to different devices. One example is utilizing
separate transmitter and receivers as part of a voting system, where multiple devices work
together to provide the full gamut of functionality needed for 2-way radio communications.
This configuration is only supported for Deployment Profiles utilizing the V.24 wireline interface,
and thus only applicable to P25/digital operation (not analog).
5.2 RF C (B R )
ONFIGURATIONS ASE OR EPEATER
There is one (Repeater Operation) parameter configured to define a PDR8000 Deployment
Profile as either a Repeater or as a Base Station. It should be noted that operation as a
Repeater supports only full-duplex channels (as described in 5.3.1), whereas Base Station
operation can be used with either half-duplex or simplex channels (see 5.3.2), or full-duplex
(see 5.3.1) channels. If a PDR8000 is configured with a combination of half-duplex/simplex and
full-duplex channels, then only those channels consistent with the current Repeater Operation
configuration can be enabled and available for use. This allows a system technician to program
a combination of different channel types (simplex/half-duplex/full-duplex) into a PDR8000, and
then selectively enable/disable those that are desired for use in a given installation.
The following table illustrates the possible combinations of channel types in different
configuration.
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