Bandwidths. Really, the only bandwidth you should have in your radar detector is the X bandwidth. Most frequencies operate on the X, and to incorporate any of the others (K, Ka, Ku), will just be asking for interference from unrelated mechanisms and external electrical stimuli. The result: less focus on what radar detection you should be picking up, such as police radar.

These are the basic necessary components in any reliable and accurate radar detector. You will find many more features available in these systems, but they are cosmetic in relation to the significant ones listed here. Start with these terms/tips for form and function, and then move on to whether youd like luxury components such as voice alerts and enhanced LED displays.