Walkie-talkies

explosive device attacks in Lebanon and Syria

A walkie-talkie, more formally known as a handheld transceiver or handheld radio, is a hand-held, portable, two-way radio transceiver. Its development during the Second World War has been variously credited to Donald Hings, radio engineer Alfred J. Gross, and to Henryk Magnuski and engineering teams at Motorola. First used for infantry, similar designs were created for field artillery and tank units. After the war, walkie-talkies spread to public safety and eventually commercial and jobsite work.

Zello is a tech software company in Austin, Texas, U.S., known for the Zello app, which emulates push-to-talk (PTT) walkie-talkies over cell phone networks.

hand-held radio transceiver

VHF band transceiver device