  We present new VLA, MERLIN and VLBI images for the radio galaxy 3C 338, and
the results of the monitoring of its arcsecond core flux density. Present high
sensitivity observations allow us to investigate the radio structure of this
source and to confirm the presence of two symmetric parsec scale jets.
Morphological changes between different epochs are evident and a proper motion
with $\beta \sim$ 0.4h$^{-1}$ has been derived allowing us to give a lower
limit constraint for the Hubble constant. While the steep spectrum large scale
structure of 3C 338 could be a relic emission, the small scale structure looks
young, similar to the high power MSOs found at high redshift.
