Gary - Like this !! <http://www.wb4hfn.com/DRAKE/DrakeArticles/HenryFilter01.htm> 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs <www.k4oah.com> Gary Schafer wrote: > There was a mechanical filter adaptor for the 2B? how did that work? > > 73 > Gary K4FMX > >