That assumption was that if both ends of a radio connection spoke at once, the signals being received would be obscured.

一直以来的假设是如果一个无线电连接的两端都同时讲话，那么正在接收的信号将会相互干扰。

youdao

The device seemed to have to turn on its radio and establish a new connection each time.

WSJ: A Review of the Irex E-reader

Usually, a GPS tracker transmits its position using a radio or mobile-phone connection.

ECONOMIST: Monitor

Its multiroom audio capabilities are similarly extensive with Powered Zone 2 and 3 capabilities, multiple DC triggers, bidirectional RS-232, and Onkyo's exclusive Universal Port for connection of an optional iPod Dock and HD Radio tuner.

ENGADGET: Onkyo TX-NR807 and TX-SR707 receivers keep the updates rolling