Adding GPS to a radar detector gives it some enticing capabilities. For instance, they can warn of red light and speed cameras. And most can lock out nuisance signals like the radar-controlled automatic door openers at the local Walmart. (Whistlers are the exception.) They can also display your speed; one will even show your altitude above sea level.
Since the detector knows how fast you're driving, Radenso and Uniden models can reduce false alarms by shutting off the audible alerts below a threshold speed. Escorts reduce sensitivity at low speeds with speed-variable sensitivity.
Red light camera alert strategies vary by manufacturer. Since only one street at many intersections is monitored by cameras, Escorts and Radensos don't alert if you're on the cross street. In contrast, Unidens alert regardless.
Methods to reduce false alarms also differ. High-end Escort models, for instance, lock out door openers automatically. Called AutoLearn, after two or three encounters the signal is identified as bogus and locked out. In contrast, Radenso and Uniden models lock out signals when a button is pressed.
Automating the task isn't free. The least expensive Escort with this feature is $499, a hundred bucks more than a Radenso model with better performance and more features.
To avoid infringing on Escort technology, Unidens allow a maximum of 100 signals to be locked out. Radensos have double that, 200. Drivers who don't stray far from home probably won't need more than 100 but high-mileage users may benefit from Radenso's greater capacity.
Aside from watching for red light-running, many red light cameras are also full-time speed traps. Approach one of these and a Radenso warns if you're over the limit.
Escorts vary the onset of red light camera alerts based on vehicle speed. Radenso models allow the user to choose the distance.
High-end models also have software that helps to combat nuisance alerts triggered by Blind Spot Monitoring (BSM) radar systems in cars. Most also use software to limit false alarms caused by traffic flow-sensing radar.
Both technologies share the K-band frequency with police radar and their signals look legit to detectors. The problem has become so intense that some drivers are disabling K band to quell the din.