Ok, now I'm positive. It has happened 3 times now that I have counted. My recently upgraded 9500i->9500ix/ir has muted itself on Ka alerts instantly. It literally stops playing audio before it even gives the voice alert. I get 1 Ka chirp and then silence. No "MUTE" displayed on the screen, it just keeps displaying the alert, but without sound. Thankfully I have my direct wire smart cord in my instrument cluster so even with the radio up I caught the visual alert LED, but this is crap.
Now I guess I get to send this radar back to Escort for another 3 weeks. Between this and several other annoying changes in the ix I wish I had never upgraded.
I think I possibly will wait and buy a V1 before I send my 9500ix in for repair, as I cannot go 3 weeks without an RD. And when it comes back, I may get rid of it. I'm tired of all the problems with these RDs compiled with Escorts lack of care for their customers wants and needs. This makes 3 for 3 faulty RDs I have had from Escort, I know of V1s that have been in use a decade with no problems. It's almost not worth the trouble anymore.