just look in your local tuner shop - try Audio Connection over in either Columbia, Pasadena, or Towson.
give me a bit and i can get you a number to the place. by the way, hiya to a fellow MDer
EDIT: here ya go
AUDIO CONNECTION INCORPORATED
1735 E JOPPA RD, PARKVILLE, MD 21234
Phone: (410) 661-1580
AUDIO CONNECTION
8037 RITCHIE HWY, PASADENA, MD 21122
Phone: (410) 768-1580
AUDIO CONNECTION
6470 DOBBIN CENTER WAY, COLUMBIA, MD 21045
Phone: (410) 730-5545
they do a lot with general "tuner" stuff, and generally have the less expensive stuff. if they don't have it, they'd know where to tell you to look for it.