My friend lives in Topton and during on weekend in June we caught the old East Penn train going from Kutztown to the Topton line, they use this for Christamas, Easter and a few other dates. They use 160.9350Mhz when in operation!!
Also wanted to make a comment on the Chapmans Yard - They just put a new trailer in for the Office and started more activity at night, Mostly in the evening and at night due to the Rte.100 crossing. They do go to Nestle, DSC Logistics and many others in the park. You can monitor them on 160.9800Mhz N/S Ch.4
You can normally sit at the Chapmans Yard on the left side of the road and they lt you alone or in the back of the strip mall or office strip whatever you want to call it!