RICHMOND, Virginia - Anyone who ever played cops-and-robbers as a kid, listened to a police scanner or watched TV shows such as "Dragnet" or "Adam-12" knows that "10-4" and other codes beginning ...

Localized police codes clashed in January 1982 when ... public use of readily available police scanners. That's a big 10-4, ...

possibly a police officer, respond by saying “10-4?” What does that mean and where did it come from? Meaning acknowledgment or okay, “10-4” comes from the 10 Codes list that emergency ...

As Dictionary.com reports, 10-4 is part of a collection of “ten-codes” developed by Illinois State Police communications director Charles Hopper in the late 1930s. Two-way car radios had just ...

After years of confirming information with a 10-4, police, firefighters and paramedics are ready to call their code language a 10-42, ending its duty. Responding to a signal 14 may not mean much ...

Localized police codes clashed in January 1982 when ... public use of readily available police scanners. That's a big 10-4, good buddy.