User's Manual

First InterComm™ system VCA100 user manual A29798 September 2008
PUBS 07_F57-01
0
A
B
C
7
Figure 5 shows a generalized urban
incident site where there is no LOS
between vehicles A and B. Figure
6 showshow positioning vehicle C
enables the First InterComm system to
overcome these obstacles by “hopping”
voice communications (i.e., passing
communications through the units
that do have LOS). Thus, all units can
communicate even though not all have
direct LOS.
Figure 6. First InterComm range is extended by "hopping"
Figure 5. LOS obstructions prevent communications
PUBS 07_F57-009
A
B
Signal relay (hopping)