My MURS M538HT Radio is experiencing above average static and reads RX in the read out when the static is happening. How can I fix this?

One thing that could be happening with this unit is that it is picking up interference from another MURS unit in the area. This particular unit could be a little more sensitive than the other units and is picking up the carrier on a signal that is to weak to receive the full transmission. To test this, just change the radio to a different channel. If this corrects it, then all the other units should be changed to the other channel.