Earliest "scanner" laws
hmarnell said:
Both the City of L.A. and the County of L.A. have similar, but not identical, ordinances, that are virtually never enforced (links in previous post up-thread).
The County ordinance, as far as I can tell, was first enacted in 1944, and slightly amended a few times since then.
The City Ordinance was passed by the Council on Sept 11, 1931 just four months after LAPD started using radios, and was signed into law by Mayor John C. Porter. This was it, in full:
"SEC 52.44. SHORT WAVE RADIOS, PERMIT REQUIRED
"No person shall equip or operate any motor vehicle with a short wave
without a permit, as provided in this Article, unless such motor vehicle is
used by a peace officer, or is used by the State or County Government, or
for experimental purposes."
The big problem they were having was ambulance-chasing tow trucks and attorneys, as well as many citizens apparently fascinated by the new "program" and flocking to calls they heard over their radios. After all, radio was still a novelty and there weren't yet many decent shows on the air. According to newspapers at the time, a number of people were arrested for either 52.44 or for interfering before the word got out to "stay home and listen."
I don't know that this law was ever passed, but my very favorite story was from Pasadena in 1932. Officers were dispatched one night to a residential burglary in progress at 811 S Euclid, and arrived to find two carloads of "merrymakers" in front of the house, yelling and carrying on. They told the officers that they had already scared off the "strange man" for them.
Police and politicians were irate, as it apparently wasn't the first such incident, so the city council considered a new ordinance
"forbidding residents who 'pick up' police calls from dashing to the scene until the officers have been given a five-minute head start." No sign that it was ever passed.
These were all predated by Michigan's long-lived and apparently frequently enforced 1929 mobile short-wave receiver law which, until 2006, required a permit to have a police receiver in your car.