On Tue, 7 Dec 1999, Dennis Jones wrote: > have a question for the group. have a Collins mechanical filter #F 455 Q7, > part number 526-9380-00, what is the spec on this guy? > 455 khz center, 2.80 khz @ 6 db, 6.50 khz @ 60 db, 21 db insersion loss, "J" case John KK6IL