Traditionally I could pick him up at my QTH pretty much 24/7 with at least an S3 signal. Although I am now finding him on again over the last couple of weeks, like you Bram, I'll hear him and then recheck an hour or two later and he's not there. I'm guessing that he's been spooked because his operational profile has changed drastically.
Radio NUT from the upstate region of New York - "The Vampire State"