Can't speak for the website, but it is a duplicate of the NEC page so they probably didn't feel the need to duplicate. That's what I used on my last CR trip. Of course for the time being it is truncated in DC anyway.
My trip on the Crescent ends in WDC, but the return is from Penn Sta after they resume service. I was hoping for the frequencies from NY to WDC What does the NEC stand for please?
Right... so for CR, SS, SM, CAR, and Carolinian/Piedmont they would be on the NEC from NYP through WAS (I'm ignoring the yard before they leave) along with a bunch of other trains, like the Northeast Regionals, Acelas,plus the Keystones and the Penn from NYP to PHL
Channel 60/60 from NYP to the division post at MP76 just east of Holmesburg Jct. Channel 54/54 south to D.C. You'll hear the radio channel change announced over the radio by the engineer.