Atlantic City police get caps with radios that broadcast instructions from headquarters, 1954

The video discusses the innovative use of a radio cap by Atlantic City patrolmen, allowing them to receive instructions from headquarters. Developed by Lawrence H. Smith, the cap operates on a 45-volt B battery and a flashlight battery, weighing less than five ounces. It features a 20-mile radius and works effectively indoors, becoming standard equipment for foot patrolmen and gaining interest from law enforcement agencies worldwide.

What is the primary benefit of the radio in a policeman's hat?

• It provides weather updates.

• It helps officers communicate with each other.

• It allows officers to listen to music.

• It enables quick response to emergency calls.

Who is credited with developing the radio receiver used in the policeman's hat?

• Thomas Edison

• Lawrence H. Smith

• Alexander Graham Bell

• Nikola Tesla

What is the power source for the radio receiver in the policeman's hat?

• Two 9-volt batteries

• One 45-volt B battery and one flashlight battery

• Solar power

• A rechargeable lithium-ion battery

What is the weight of the radio receiver, including batteries?

• Two pounds

• One pound

• Less than five ounces

• Ten ounces

What is the effective range of the radio cap?

• 50 miles

• 20 miles

• 10 miles

• 5 miles