ITC 220 Base Station, Locomotive & Wayside Radio Transceiver Field Service Guide PN 0046300120 Rev. A
| Page 2
220 Radio Transceivers provide wireless packet data transport between locomotives, base stations, and wayside
locations.
Base Station Transceivers are installed at fixed locations and provide RF connectivity between back office and remote
applications. The backhaul between the Base radio transceiver and the Back Office is typically in the range of 56 kbps to
1 Mbps. Base Station Transceivers provide radio coverage to all wayside and operational locomotive transceivers in the
system.
Locomotive Transceivers are remote radios installed in the cab of locomotives and are the mobile element of the ITC
220 network. A Locomotive Transceiver communicates with the Back Office through a Base Station over a 220 MHz RF
link. Te establish this link, a Locomotive transceiver registers with the Base transceiver. As long as the Base is the best
link available, the locomotive will continue to communicate with the Back Office through that Base.
Wayside Transceivers are typically installed at waysides as remote, fixed location radios. In this application they provide
wayside signal status, switch position, and track integrity information to locomotives and must communicate with
locomotives even when there is no Base Radio coverage. Wayside radios enable wayside sites to communicate with the
Back office for maintenance and other purposes. Some wayside radios may have access to the Back Office through a
broadband connection.
The Base Station Transceiver, Locomotive Transceiver, and Wayside Transceiver form the transportation backbone on
which a messaging application provides communication capabilities between railroad assets and their back offices.
ITC 220 Base Station, Locomotive, and Wayside Transceivers are designed to meet the following specifications:
AAR Standard S-5702
ANSI/TIA-603-C-2004
MIL-STD-810E
1.2
OPERATIONAL CHARACTERISTICS
ITC 220 radio transceivers are designed to satisfy industry-standard ITC requirements as part of an integrated 220 MHz
radio (ITCR) network supporting the implementation of PTC systems. These transceivers are designed to provide
communication in an interoperable fashion enabling messages to occur across railroad boundaries.
Base Station Transceivers are available in two configurations, one of which re24 VDC nominal input power, and
the other re48 VDC nominal input power. Both models are almost identical, with the exception of their nominal
input power requirements.
ITC 220 radio transceivers have the following operational characteristics, with differences noted where they appear for
each of the three types of transceivers, and for +24 VDC and +48 VDC models of the Base Station Transceivers.
(Specifications are subject to change without notice.)
General
Frequency Range:
217.6-222.0 MHz
Channel Spacing:
25 kHz
Temperature Range:
Operating: Base Station: -30°C to +70°C; Locomotive & Wayside -40°C to +70°C
Storage: -55°C to +85°C (Base Station, Locomotive & Wayside)
Operating Humidity:
0 - 95% non-condensing