Radio waves:
RF-shielded anechoic chamber

Our tuners are designed to deliver excellent reception even in urban environments where skyscrapers wreak havoc with radio waves.

Car tuners must be able to accurately pick up a desired frequency from among the many radio waves 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 1800 radio-wave-absorbent ferrite tiles designed to shut out incoming radio waves. In addition to measuring the effects of radio waves that radiate from the vehicle itself and those that come from outside sources, this chamber can be used to precisely measure antenna and tuner reception. We can rotate the vehicle on a large turntable and configure the angle relative to the measuring antenna to a range of between three and thirty meters. This allows us to measure the effects of radio waves and examine how they affect reception.

Trusted by automakers around the world, Alpine's highly sensitive tuners are refined through rigorous testing at these state-of-the-art facilities.