These are the frequencies listed in ISED for Great Canadian Railtour Co. Ltd which I believe runs the Mountaineer. 151.595 in Alberta, specifically Calgary is licensed to a cement company so probably wouldn't be used. I don't specifically monitor Rail frequencies, but I did hear the Mountaineer calling last year on one of the usual CP rail frequencies.These are my loggings from way back,
Uhf-453.3375 +453.6375,458.6625 + 469.2625 was a Canada wide listing (guest services)
those were specific to on the train, other national ones we heard as well.