Passport Radar developed the Passport SR7 as a remote radar detector, designed for hidden installation into vehicles. At the time in 2004 time frame, it was the best out there. It is the predecessor to the Passport 9500ci radar detector, which is the best remote radar detector today. The Passport SR7, also known as the Escort SR7 radar detector is still sold quite a bit by installers and provides a single, internal, radar antenna to detect radar at the primary US radar bands of X, K and Ka superwide radar.
It provides a radar antenna, voice speaker, display and control module, making this SR7 radar detector fairly simple to install. The display provides a red LED matrix display, giving you signal strength, radar band; while the voice speaker gave you voice alerts.
The radar antenna is good at detecting radar, however, the historical location to install the radar detector by installers, is to locate the radar module down in the grille. Installers are good at installing, but locating a radar module close to the highway surface, may be trick, but it reduce the radar detection efficiency. The closer to the highway surface you get, the poorer the radar detection performance. Why did you buy a remote radar detector, you ask? Most people do not make the connection between radar detection and trick installations. The reality is that you want a trick install that provides superb radar detector performance. We will discuss that in another article.
Over all, the Passport SR7 is an excellent remote radar detector, providing good radar detection as a pure radar detector; i.e, it detects radar, but does not add GPS, photo, memory or 100% RDD electronic invisibility, as does the Passport 9500ci radar detector. If installed with the radar detector module as high in your vehicle as possible, such as hidden behind the rear view mirror in a special polycarbonate box, or hidden up on the sun visor using a good radar detector visor holder, then the Passport SR7 will give you good X, K, Ka radar detection. It has no software ability to filter out false alerts, so this comes with the lower cost of the Passport SR7.
