AM Radio in All New Cars-May Soon Make a Comeback

Carmakers could soon be required to equip their vehicles with a feature that many people, including those who don't have a car, believed it was dead: AM radio.

Sometimes referred to as amplitude modulation and considered the outdated brother of frequency modulation, mostly known as FM, AM broadcast could be used by authorities to broadcast emergency information, Senator Ed Markey (D-Mass), who co-authored the bill, explained.

Markey's proposal is simple.

Vehicles on the road must be fitted with a simple but extremely reliable method to get emergency information. If all the other communication channels, such as mobile networks, fail during an earthquake, for example, the authorities must be able to send emergency info to people on the road.

AM radio is the easiest way to establish such a system. It has one big advantage: it's been used for years and is already there. However, it also suffers from a major problem: it's considered outdated, so a growing number of carmakers dropped support for AM radio in their new models.

The new US bill, which recently passed the House Energy and Commerce Committee, would require all carmakers selling vehicles in the United States to equip their cars with AM radio. Some already do, but others don't, and they claim they have good reasons for no longer offering what they describe as outdated technology.

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