Originally Posted by transitman
Go to the web site, On-Track-On-Line,com, scroll down to the Amtrak Radio Frequencies section, click on the link which will bring you to a page listing all the Amtrak routes. Select Capitol Limited and the frequencies for each segment are shown. Enjoy the ride!
I highly recommend On-Track-On-Line.com, i've used them many times before, and their frequency listings for amtrak routes are accurate. I've done the Silver Meteor, Silver Star, Crescent, Capitol Limited, Lake Shore Limited, Adirondack, and Acela/NE Regional and have always picked up comms with OTOL's listing.
Enjoy the trip! I really enjoyed the Capitol Limited when I rode it back last month.