Hello I just recently installed the optional UT-106 AF DSP noise reducer in my 910. It works better than I anticipated. On weak noisy AO-7 I can hear signals that before were almost uncopyable. If you have a 910, you might consider it. I have no connection to Icom aside that they're only 8 miles up the road, they have a neat ham shack. 73 Bob W7LRD Seattle