  As part of a large study to investigate the nature of the longer wavelength
continuum emission of radio-loud AGN, we present new mid to far-infrared (MFIR)
and high frequency radio observations for a complete sample of 2Jy powerful,
southern radio galaxies at intermediate redshifts (0.05<z<0.7). Utilizing the
sensitivity of the Spitzer Space Telescope, we have made deep MIPS observations
at the wavelengths of 24, 70 and 160 microns, detecting 100% of our sample at
24 microns, and 90% at 70 microns. This high detection rate at MFIR wavelengths
is unparallelled in samples of intermediate redshift radio galaxies.
Complementing these results, we also present new high frequency observations
(15 to 24Ghz) from the Australia Telescope Compact Array (ATCA) and the Very
Large Array (VLA), which are used to investigate the potential contamination of
the MFIR continuum by non-thermal synchrotron emission. With the latter
observations we detect the compact cores in 59% of our complete sample, and
deduce that non-thermal contamination of the MFIR continuum is significant in a
maximum of 30% of our total sample. MFIR fluxes, radio fluxes and spectral
energy distributions for the complete sample are presented here, while in a
second paper we will analyse these data and discuss the implications for our
understanding of the heating mechanism for the warm/cool dust, star formation
in the host galaxies, and the unified schemes for powerful radio sources.
