Baltimore County still had their analog system when I had my Uniden.
But as Troy mentioned, Baltimore County's simulcast setup is different than York County's, which really causes problems for ALL scanners. York County's simulcast timing is set up so that this signal from simulcast transmitters arrives in the overlap areas at the same time, so all scanners and radios are optimized to reduce simulcast multipath distortion. Baltimore County's system uses what's called linear simulcast -- basically the signal's digital packets are "shaped" in such a way that a subscriber radio can differentiate simulcast transmissions arriving out of sync and reject late-arriving signals.There is much less emphasis placed on timing and syncing. Because scanners are not equipped to "see" the shaping of these packets, they are plagued with out-of-sync signals, and thereby, inundated with multipath distortion. Your best bet with Baltimore County is to turn on all applicable attenuators.