Abstract: Observations by 224 MHz VHF incoherent scatter radar at Troms, Norway (69.6°N) around midday from 13 July 2010 to 16 July 2010 were presented to obtain the polar mesosphere summer echoes (PMSE). The PMSE could be captured during all these days and sometimes they possessed doublelayer structure. In order to survey their aspect sensitivity, we set the mode that the direction of radar beam periodically jumped between vertical and a certain offzenith angle. With respect to the higher PMSE layer on 13 July, the echo power decreased with the increasing offzenith angle of radar beam. By calculation, the half width angle of echoes was 8.9°. However, for the lower PMSE layer on 13 July and the PMSE layers on 14-15 July, the echo power hardly showed any relation with direction of beam. This was not consistent with the former international observation results by 50 MHz VHF radar.