![Inventors and Inventions - - Before Radar (Page - 2) - Who invented radar - earlier images and links to sites of interest - describing early acoustic devices - sound mirrors, acoustic Inventors and Inventions - - Before Radar (Page - 2) - Who invented radar - earlier images and links to sites of interest - describing early acoustic devices - sound mirrors, acoustic](http://www.design-technology.info/inventors/_wp_generated/pp45f816db.png)
Inventors and Inventions - - Before Radar (Page - 2) - Who invented radar - earlier images and links to sites of interest - describing early acoustic devices - sound mirrors, acoustic
![Antenna tower from which the first radar signal aimed at the moon was received back, two and a half seconds after it was sent Stock Photo - Alamy Antenna tower from which the first radar signal aimed at the moon was received back, two and a half seconds after it was sent Stock Photo - Alamy](https://c8.alamy.com/comp/CWC072/antenna-tower-from-which-the-first-radar-signal-aimed-at-the-moon-CWC072.jpg)
Antenna tower from which the first radar signal aimed at the moon was received back, two and a half seconds after it was sent Stock Photo - Alamy
![The SCR-268 Radar (Signal Corps Radio n°268), US Army's first radar system. New Jersey, USA, 1940 Stock Photo - Alamy The SCR-268 Radar (Signal Corps Radio n°268), US Army's first radar system. New Jersey, USA, 1940 Stock Photo - Alamy](https://c8.alamy.com/comp/TXG3DK/the-scr-268-radar-signal-corps-radio-n268-us-armys-first-radar-system-new-jersey-usa-1940-TXG3DK.jpg)
The SCR-268 Radar (Signal Corps Radio n°268), US Army's first radar system. New Jersey, USA, 1940 Stock Photo - Alamy
![The SCR-268 Radar (Signal Corps Radio n°268), US Army's first radar system. Palermo, Sicily, 1943 Stock Photo - Alamy The SCR-268 Radar (Signal Corps Radio n°268), US Army's first radar system. Palermo, Sicily, 1943 Stock Photo - Alamy](https://c8.alamy.com/comp/TXG3DN/the-scr-268-radar-signal-corps-radio-n268-us-armys-first-radar-system-palermo-sicily-1943-TXG3DN.jpg)
The SCR-268 Radar (Signal Corps Radio n°268), US Army's first radar system. Palermo, Sicily, 1943 Stock Photo - Alamy
![Indian Aerospace Defence News - IADN on Twitter: "Human Radars The first aircraft detection device ever used. The pictures are from WW-I. They were replaced by radio systems and radar technology. It Indian Aerospace Defence News - IADN on Twitter: "Human Radars The first aircraft detection device ever used. The pictures are from WW-I. They were replaced by radio systems and radar technology. It](https://pbs.twimg.com/media/Fp42NLVaQAEMmL5.jpg)