Pulse (or instant-on) radar is more difficult to detect than conventional radar because it remains “off” until activated to measure the speed of a targeted vehicle. When a pulse type transmission is detected, your Whistler detector
sounds an urgent 3-second audio warning and flashes the Alert strength indicators at their fastest rate. (The SRT 35R model displays “P”.) After the 3-second pulse alert, the standard alert pattern continues for as long as the signal is present.
It is important to respond promptly to a pulse
alert, since warning time may be minimal.