There are many radio waves in the air that provide various forms of information. What we need is the technology that enables us to accurately capture the waves that we need.
Car tuners must be able to accurately pick up a desired frequency from among the many radio waves, such as those from mobile equipment, that bombard the vehicle. To measure reception accurately, we must establish a testing environment where we are able to eliminate all unwanted radio waves.
Alpine operates one of the few RF-shielded anechoic chambers in Japan. It is as large as a small music hall and is fitted with about 1,800 radio-wave-absorbent ferrite tiles designed to shut out incoming radio waves. We can rotate the vehicle on a turntable to examine how radio waves affect reception of the antenna and tuner by measuring them from the vehicle itself and the effect of them on the vehicle. The distance between the measuring antenna and the object can set from 3 to 10meters depending on the measuring experiments.
Trusted by automakers around the world, Alpine's highly sensitive tuners are refined through rigorous testing at these state-of-the-art facilities.