During the last few weeks users may have experienced crackling whilst using the Mt. Leinster 70cm repeater on 430.950 MHz. We suspect this was caused by an antenna problem so last Saturday (4/5/19) we visited the site and changed the antenna from a collinear to a four stack dipole array. The weather conditions on the day turned out to be ideal for the job which was completed in a short time and seems to have sorted the problem.