Hi:
151.235 PL 71.9 is certainly used a lot. This is DCR Ch 13 (fire lookout towers).
151.310 PL 71.9 is certainly used a lot. This is DCR Ch 14 (fire lookout towers).
They are both direct/simplex. Only DCR channels 2-11 are the 151.145 rptr output PL 71.9.
I would guess at any moment ch 13 & 14 should start getting active w/ fire tower chatter, having all this warm weather. Though the staffing levels don't usually start until May.