Originally Posted by
nine_c1
Building an ultra sensitive super-heterodyne receiver, with components that remain stable over long periods of time in the microwave spectrum (and at affordable prices), is a bit more complicated than the average car radio tuner.
As Escortradar indicated, they all drift over a period of time and require a "Factory" tune up or component replacement at some point. The beauty of your RX65 is that it runs regular internal calibrations to optimize the mixer circuit and will notify you with a "service required" message when the detector cannot self adjust to the specified parameters. Other detectors use the flashing lights in your rear view mirror as an indicator that they have drifted out of tune and lost performance.
As EscortRadar indicated, you can extend periods between factory visits by keeping your RD from baking on the dash or on the windshield of a parked car.........extreme heat ages electronic components and shortens the expected life span. Particularly the transistors and diodes used in the microwave circuits.
Anyway, I like to have a backup detector on hand for the inevitable occasion when the primary has to go in for a checkup.
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