My Uniden R3 has been working great and still works, but I came across a portable speed unit one night and it never made a sound to my surprise. I have updated to the latest 1.48 firmware, turned on everything thinking it was a X-band since I have it turned off. I have turned on X, K, KA, MRCD, Laser and turned off all filters and even have K, Ka Pop on and it will say nothing as I pass by it multiple times. However, it still alerts me to other signals and vehicle bsm. Chrysler Vans are always K 24.160 usually and I still get other alerts, but this road sign is using something the R3 can not detect which concerns me for obvious reason. I have driven passed it several times and no sound with all filters off and all detecting variants on. I've attached a photo of the R3 working 3 mins after leaving the portable speed unit following a Chrysler Van. Can anyone help with this. I am totally lost and now worried somewhat.