Радио @ /
Читать форум «Радио»
Прямой эфир
Thunderman Thunderman Re: Список частот (добавляем)
«РОСА» — система правительственной подвижной радиотелефонной связи долговременной криптостойкости. В Киеве до сих пор работает . На выходных каналах слышен зуммер - постоянный тональный сигнал. Иногда слышен зашифрованный радио обмен, разобрать речь не возможно. Кто знает об этом операторе? Как к нему подключиться и где скачать проги-дешифровщики?
POKEP POKEP Re: Радиобарахолка
продам Alan 42 multi, полн комплект, пользовался очень редко

хотелка - 2000грн

больше фоток тут
POKEP POKEP Re: Радиовопрос по MH17

A duplex communication system is a point-to-point system composed of two connected parties or devices that can communicate with one another in both directions. "Du" comes from "duo" that means "double", and "plex" that means "structure" or "parts of"; thus, a duplex system has two clearly defined data transmissions, with each path carrying information in only one direction: A to B over one path, and B to A over the other. There are two types of duplex communication systems: full-Duplex and half-Duplex.

In a full-duplex system, both parties can communicate with each other simultaneously. An example of a full-duplex device is a telephone; the parties at both ends of a call can speak and be heard by the other party simultaneously. The earphone reproduces the speech of the remote party as the microphone transmits the speech of the local party, because there is a two-way communication channel between them, or more strictly speaking, because there are two communication paths/channels between them.

In a half-duplex system, each party can communicate with the other but not simultaneously; the communication is one direction at a time. An example of a half-duplex device is a walkie-talkie two-way radio that has a "push-to-talk" button; when the local user wants to speak to the remote person they push this button, which turns on the transmitter but turns off the receiver, so they cannot hear the remote person. To listen to the other person they release the button, which turns on the receiver but turns off the transmitter.

Заметили ошибку? Выделите и нажмите Ctrl+Enter