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Radio continuum and polarization observations of the entire Cygnus Loop at6cm wavelength were made with the Urumqi 25m telescope. The 6cm map is analysedtogether with recently published maps from the Effelsberg 100m telescope at21cm and 11cm. The integrated flux density of the Cygnus Loop at 6cm is90+/-9Jy, which implies a spectral index of -0.40+/-0.06 being consistent withthat of Uyaniker et al. (2004) in the wavelength range up to 11cm. This rulesout any global spectral steepening up to 6cm. However, small spectral indexvariations in some regions of the source are possible, but there are noindications for any spectral curvature. The linear polarization data at 6cmshow percentage polarizations up to 35% in some areas of the Cygnus Loop,exceeding those observed at 11cm. The Rotation Measure is around -21rad/m^2 inthe southern area, which agrees with previous observations. However, thedistribution of Rotation Measures is rather complex in the northern part of theCygnus Loop, where the 21cm emission is totally depolarized. Rotation Measuresbased on 11cm and 6cm data are significantly larger than in the southern part.The difference in the polarization characteristic between the northern andsouthern part supports previous ideas that the Cygnus Loop consists of twosupernova remnants.Comment: 11 pages, 10 figures, accepted for publication in A&

New $\mathsf{\lambda}$6 cm observations of the Cygnus Loop