I've asked this of PHL APPROACH already and he says he is going to look into it for me but to help him out maybe one of you guy's can help me out here ? The WASH ARTCC SECTOR(133.975) has been handing off MRB VOR J6 TRAFFIC to another frequency other tha the usual 133.275 and that being 118.025. I still however hear both frequencies given as a handoff along J6 TO DFW. Did they split the MRB sector into high and superhigh levels ? Curious