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We report the results of the spectroscopic observations carried out at theSAO RAS 6-m telescope for the optical components of nine new extended radiosources found in the NVSS catalog. The measured redshifts of the host galaxiesare in the range of z=0.1-0.4. The physical sizes of radio sources werecalculated within the standard cosmological model. The two most extendedobjects, 0003+1512 and 0422+0351 reach the sizes of 2.1 Mpc and 4.0 Mpc,respectively. This is close to the maximum size of known radio sources.

New Extended Radio Sources From the NVSS