1 янв 1921 г. - The first car-car radios are used
Описание:
The Detroit Police Department began using mobile radios in their police cars. They used them to talk between police cars, even though it didn't work very well.Добавлено на ленту времени:
Дата:
1 янв 1921 г.
Сейчас
~ 103 г назад
