In view of the current fight to keep AM radio in American vehicles, here’s a brief history of it’s impact

AM (Amplitude Modulation) radio played a crucial role in shaping both American culture and the automobile industry, providing entertainment, news, and connectivity for drivers. From its early beginnings to its decline in the digital age, AM radio transformed how Americans traveled, commuted, and consumed information.

Early History of AM Radio (1900s-1920s)

  • AM radio technology dates back to the early 20th century, with Reginald Fessenden broadcasting the first voice and music transmission in 1906.
  • The first commercial AM station, KDKA (Pittsburgh, PA), went on the air in 1920, marking the birth of commercial radio broadcasting.
  • By the mid-1920s, AM radio exploded in popularity, with hundreds of stations broadcasting music, news, sports, and drama across the U.S.

The Introduction of AM Radio in Cars (1930s-1940s)

  • The first factory-installed car radio was introduced by Motorola in 1930, costing about $130—a significant expense when a Ford Model A cost around $600.
  • In 1933, Edwin Howard Armstrong developed FM radio, but AM remained dominant due to cheaper infrastructure and longer broadcast range.
  • Car radios became a luxury feature, mostly found in high-end vehicles, but as technology improved, costs declined.
  • By the 1940s, automakers like Ford, General Motors, and Chrysler began offering AM radios as an optional feature.

The Golden Age of AM Radio in Cars (1950s-1970s)

The post-WWII economic boom saw a surge in car ownership and road travel, making in-car entertainment more desirable.

Key Developments:

  • 1948 – Transistors were developed, making radios smaller, cheaper, and more durable for cars.
  • 1952 – Blaupunkt introduced the first FM-capable car radio, but AM remained dominant.
  • 1955-1960s – The rise of Top 40 radio stations, led by rock & roll and country music, made AM radio the heart of American car culture.
  • 1963 – Over 60% of cars came equipped with AM radios.
  • Late 1960s – 8-track tape players were introduced, offering an alternative to radio, but AM still thrived for news, sports, and live programming.

Cultural Impact:

  • AM radio was the soundtrack of the American road trip, playing everything from Elvis Presley to The Beatles.
  • Local stations connected rural communities and provided vital updates during emergencies.
  • Drive-in theaters, diners, and car clubs revolved around AM radio stations.

The Decline of AM Radio in Cars (1980s-Present)

The Rise of FM and Other Audio Technologies

  • By the late 1970s and 1980s, FM radio surpassed AM in popularity due to better sound quality and stereo broadcasting.
  • 1980s – Cassette players became common in cars, further reducing AM radio’s dominance.
  • 1990s – CD players and satellite radio (SiriusXM) offered higher-quality, commercial-free alternatives.
  • 2000s-Present – Streaming services, Bluetooth, and podcasts made traditional AM/FM radio less relevant in vehicles.

Regulatory & Technical Challenges

  • Interference Issues – AM signals suffer from static, electrical interference, and poor sound fidelity compared to FM.
  • Automakers Phasing It Out – Modern EVs (electric vehicles) produce electrical interference that disrupts AM signals, leading brands like Tesla, BMW, and Ford to remove AM radio from new models.

AM Radio’s Lasting Impact on the U.S. Auto Industry

Pioneered In-Car Entertainment

AM radio transformed cars from simple transportation tools into mobile entertainment centers, paving the way for:

  • FM radio
  • Cassette & CD players
  • Satellite radio (SiriusXM)
  • Streaming & infotainment systems

Shaped American Driving Culture

  • Road trips, Route 66 travel, and the cruising culture of the 1950s-70s were defined by AM radio.
  • Talk radio, news, and sports broadcasts kept drivers informed before the internet.

Helped Define the Car as a “Second Living Room”

  • The idea of a car as a personalized entertainment space began with AM radio, influencing modern touchscreen infotainment systems.

Its Decline Signals a Shift in the Auto Industry

  • The removal of AM radio from EVs and modern cars represents a move toward digital, internet-based entertainment.
  • However, rural communities and emergency alert systems still rely on AM, prompting debates on whether automakers should keep it.

Conclusion: From Icon to Obsolete?

AM radio revolutionized in-car entertainment and played a massive role in shaping the U.S. auto industry and American road culture. While its influence has declined due to FM, satellite radio, and digital streaming, AM radio remains a historical milestone in automotive evolution.

Will AM radio disappear completely?
With the rise of EVs and digital alternatives, it seems likely, but policy makers and rural communities continue to push for its preservation—a testament to its lasting impact