press-to-talk switch
push-to-talk switch , PTT switch (abbreviation)

Alan slammed his fingers to the press-to-talk switch.

I released the press-to-talk switch on the side of the handset and listened to the rush of static in the earpiece.

Mentally compose your message before operating the press-to-talk switch, avoiding a transmission containing lots of 'umms' and 'aahs' and long pauses.

Then he took the walkie-talkie from Tony and pressed the PRESS-TO-TALK switch.

I read the coordinates slowly, repeating them twice and released the push-to-talk switch.

Two push-to-talk switches can be used with the intercom allowing transmission through the radio.

The term half-duplex refers to systems where use of a push-to-talk switch is required to communicate.

Order Push-to-Talk switch for aircraft not so equipped.

Also on screen is an illustration of the microphone with a push-to-talk switch, and a basic GPS simulator.

The walkie-talkie can be placed in your clothing, and the Push-To-Talk switch for the radio is mounted on the handlebar.

Army head and breast sets were replaced in 1964 by metal housed "Teletalk" units which only permitted one-way communications when the push-to-talk switch was depressed.

Each operating station comprises: - Main control and information display with pointing device and radio Push-To-Talk switch.

Some areas only had half-duplex (one-way) communications and required the push-to-talk switch in the handset, between the mouthpiece and the earpiece.

He followed Rick out of the chamber, enclosing the transceiver, and shut the door, just in case the push-to-talk switch wasn't the only way the device could operate.

Two lights on the "head" indicated busy (red) if no channels were idle and in-use (green) if connected to the tower, or depressing the push-to-talk switch.

In HTC's version, two pins are for the microphone, three are for stereo sound, and one is for the push-to-talk switch.

A floor-mounted foot activated push-to-talk switch facilitates intercom communications for the left seat occupant, although some later models may be equipped with a voice activated intercom system.

The extra (tip) connection in the microphone plug is often left unconnected but is also sometimes used for various functions, most commonly an optional push-to-talk switch, but on some aircraft it carries headphone audio and on others a DC supply.