Using the detector arrays of the ISOCAM and ISOPHOT, we propose to
 detect and accurately measure the mid and far-infrared emission
 (at 12, 70, 105, 135 and 160 microns) from a carefully
 chosen sample of 35 elliptical galaxies with an intermediate radio
 luminosity and located mostly at small redshifts ( z < 0.1).
 This sample of lobe-dominated radio sources has been derived
 in an unbiased manner from two radio/optical flux limited complete
 samples of bright elliptical galaxies, for which a variety
 of radio/optical data are already available.

 The salient selection criterion adopted by us is that the immediate
 surroundings of each galaxy (within a 1' radius) are devoid of any
 objects that could potentially contaminate the background estimate on
 the ISOPHOT and ISOCAM images, thus rendering the MFIR photometry of
 these rather faint objects uncertain. For this, we have examined the
 fields of each member of the parent sample, employing the red CCD
 images taken by us.

 We estimate a very high detection rate for our sample with ISO in
 all the 5 bands (compared to under 20% that has been possible with the
 IRAS). Thus, these observations should fill the crucial gap between
 radio-quiet and radio powerful ellipticals and enable, for the first
 time, a systematic investigation of the connection between the radio
 and mid/far infrared emission from active ellipticals.