The VHF Hanbook from the 1960's used a 6252 -- I believe that this was also
the bube used in various transverters sold by Hallicrafters --- my but no
6146 design -- I still have a bunch of 6360's hanging around from that era.

There is a 6146 transverter design in the 1973 ARRL Handbook --
comprehensive enough to get you done.