  G35.6-0.4 is an extended radio source in the Galactic plane which has
previously been identified as either a supernova remnant or an HII region.
Observations from the VLA Galactic Plane Survey at 1.4 GHz with a resolution of
1 arcmin allow the extent of G35.6-0.4 to be defined for the first time.
Comparison with other radio survey observations show that this source has a
non-thermal spectral index, with alpha -0.47 +/- 0.07. G35.6-0.4 does not have
obvious associated infra-red emission, so it is identified as a Galactic
supernova remnant, not an HII region. It is approximately 15 x 11 arcmin**2 in
extent, showing partial limb brightening.
