Are they compatible with each other? For instance, would a telephone set type "H" MkIII be compatible with, say, a type "L." There's obvious differences in the circuitry with many field telephones. What I'm asking, is, can you connect different types together? Would a type "H" only work ok with another type "H?" A type "L" with another type "L?"
As an aside, the field telephone I have has a rigid magneto handle, there's no "slip" on the handle, is this normal? On other magneto phones I have, the bit of plastic/bakelite on the handle turns freely.
