  We present multifrequency observations with the Giant Metrewave Radio
Telescope (GMRT) and the Very Large Array (VLA) of a sample of seventeen
largely giant radio sources (GRSs). These observations have either helped
clarify the radio structures or provided new information at a different
frequency. The broad line radio galaxy, J0313+413, has an asymmetric, curved
radio jet and a variable radio core, consistent with a moderate angle of
inclination to the line of sight. We attempt to identify steep spectrum radio
cores (SSCs), which may be a sign of recurrent activity, and find four
candidates. If confirmed, this would indicate a trend for SSCs to occur
preferentially in GRSs. From the structure and integrated spectra of the
sources we suggest that the lobes of emission in J0139+399 and J0200+408 may be
due to an earlier cycle of nuclear activity. We find that inverse-Compton
losses with the cosmic microwave background radiation dominate over synchrotron
radiative losses in the lobes of all the sources, consistent with earlier
studies. We also show that prominence of the bridge emission decreases with
increasing redshift, possibly due to inverse-Compton losses. This could affect
the appearance and identification of GRSs at large redshifts.

Astrophysics