what is a "BLONDER TONGUE1" ?
From http://www.dbstalk.com/showthread.php?s=&threadid=6041&highlight=TongueBlonder Tongue Labs makes CATV and SATV stuff, so it's possibly a box for cable companies using Dish as a channel source?
QPSK/QAM seems to be their big thing currently (http://www.blondertongue.com/) but they make tons of stuff.
Their model 6189A is a QAM transcoder compatable with E*