I was playing with my Basic Stamp Homework board and I created a quick 'n dirty laser tester.
I programmed the stamp to emit standard pulses when one button is pressed and Laser Atlanta "stealth mode" pulses when the other button is pressed. The pulse rates aren't precise, but I was able to determine which of my detectors detect stealth mode and which ones don't.
V1 3.858: Detects both standard and stealth mode (no surprise here)
Escort X50 Rev 5: Detects standard but not stealth mode (this is already known from GOL etc. tests, S7 platform doesn't detect stealth mode)
Unidung LR 9000W: Detects standard but not stealth mode (no surprise here)
RX65 Rev 6.3: Detects standard and stealth mode! This was the surprise. Apparently Belscort did put stealth mode detection into the M4 platform, at least in the RX65.
I wonder if newer Belscorts such as the 9500 series and STi series detect stealth mode. Anyone want to send me a sample to try?