  In April 2002 an array of antennas operating at 129GHz successfully detected
VLBI fringes on both continuum AGN and SiO maser sources. The 129GHz fringes on
maser sources represent the highest frequency spectral line VLBI detections to
date. The AGN 3C279 was detected on long baselines at both 129GHz (and at
147GHz, see Krichbaum et al in these proceedings) yielding fringe spacings of
50-56 micro arc seconds, an angular resolution record. The array consisted of
the University of Arizona Kittpeak 12m antenna, the Heinrich Hertz 10m
Telescope (HHT), and the IRAM 30m dish on Pico Veleta.
  At 129GHz, a number of evolved stars and several young stellar objects
exhibit strong SiO maser emission in the v=1 J=3-2 transition. Preliminary
cross power spectra of SiO masers around the red hypergiant VYCMa on the
HHT-KittPeak baseline ~190km are consistent with multiple spatially separate
maser spots associated with the star. Future observations will include
continuum observations of the radio source at the Galactic Center, SgrA*, and
higher frequency maser lines including HCN and methanol.
