Английская Википедия:Closed-circuit radio
Материал из Онлайн справочника
Шаблон:Short description A closed-circuit radio is a radio that emits over a very small range, typically a college campus. This system can be achieved from two ways:
- By tying into the PA SystemШаблон:Clarify[1]
- By using existing power lines, telephones lines, pipes, etc. to transmit a carrier currentШаблон:Clarify[2][3][4][5][6][7]
References
Шаблон:Reflist Шаблон:Radio-comm-stub
- ↑ Шаблон:Cite web
- ↑ The early days of armed forces radio Шаблон:Webarchive
- ↑ Closed-circuit communications signal distribution system
- ↑ Radio behind bars – The Polish case
- ↑ Closed-circuit Radio Relays Game
- ↑ College Closed-circuit Radio Station Gets New, More Powerful Transmitter
- ↑ Closed-circuit Radio Network in Homes Seen