An official website of the United States government
Official websites use .gov A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
During several testing sessions from May 12 to June 3, 2011, information was gathered on potential sources of intermodulation from on-board and external radio transmitters.
No strong evidence of non-locomotive external intermodulation was detected, but it cannot be ruled out at this time. One of...
This document is one of three documents in a set of specification documents that describe the ITC 220 MHz Radio Network. This network provides communications for Positive Train Control (PTC) and is composed of 220 MHz data radios designed specifically for this application. The 220 MHz Radio Network...