User's Guide

First InterComm ™ System User Guide
Page 4 A29798
November 2007
First InterComm™
VCA100
First Responders Group A Radio Net
453.95 MHz
First InterComm™
VCA100
Incident Area Net
Incident Commander’s
Laptop Computer
First Responders Group B Radio Net
154.57 MHz
First InterComm™
VCA100
First Responders Group A Radio Net
453.95 MHz
First Responders Group A Radio Net
453.95 MHz
First InterComm™
VCA100
Incident Area Net
Incident Commander’s
Laptop Computer
First Responders Group B Radio Net
154.57 MHz
Figure 3. The FICS Enhanced by the Optional ICTCS
Operating the First InterComm™ System
Start-Up
1. Apply power to the VCA100 with the cab-mounted switch.
2. Allow approximately one minute for the unit to initialize and connect to any other
VCA100s in the area.
3. Switch radio equipment to the tactical channel selected for use with the VCA100.
4. Communicate using the applicable SOP.
RECOMMENDATION
TURN ON THE VCA100 UNIT ON THE WAY TO THE SCENE
Vehicle Location
Wireless signals grow weaker as they propagate (travel away) from the transmitter. The
FICS is designed to operate up to approximately one-quarter mile between VCA100s,
assuming a clear, unobstructed Line of Sight (LOS). Buildings, hills, vegetation, and
other obstructions will reduce range as shown in Figure 4. In addition, metallic objects
such as dumpsters, vehicles, etc. may cause interference that degrades performance. If
possible, position VCA100-equipped vehicles to minimize such factors.