  We report on the development of new code to support the beam waveguide
antenna mount types in AIPS, which will allow polarisation analysis of
observations made using these antennas. Beam Wave-guide antennas in VLBI are
common in communication antennas that have been repurposed (e.g. Warkworth,
Yamaguchi).
  The mount type affects the differential phase between the left and the right
hand circular polarisations (LHC and RHC) for different points on the sky. We
demonstrate that the corrections for the Warkworth beam wave guide antenna can
be applied.
