Last topic I wrote was how my new Sti would not pick up K band. I sent it back and got a new unit. Soon as I plugged the new one in it would flash "service required". Bummer. I called Bel and they said to try and reset it so I did that and same thing happened again so I mailed it back on Friday. Further, I asked if they could manually test my 3rd replacement Sti and they said "no" they are factory sealed from Canada.
Hopefully 3rd time is a charm! I really like the unit and want it to work.