Predel-E

{{Short description|Russian military over-the-horizon radar system}}

Predel-E (in Russian: Предел-Э{{Cite web |last=Игорь |first=СЕМИКОВ |title=Мобильная береговая РЛС и вездеход Бурлак заинтересовали Погранслужбу ФСБ |url=https://mashnews.ru/mobilnaya-beregovaya-rls-i-vezdexod-burlakzainteresovali-pogransluzhbu-fsb.html |access-date=2023-08-30 |website=Информационно-аналитический портал «Новости промышленности MASHNEWS» |language=ru}}) is a Russian military over-the-horizon radar system shown since 2017,[https://global.espreso.tv/ukrainian-forces-destroy-russian-predel-e-radar-station-what-does-it-mean Ukrainian forces destroy Russian Predel-E radar station: what does it mean? 2023] designed to detect ships in coastal areas.{{Cite news |last=Novichkov |first=Nikolai |date=September 2021 |title=IMDS 2021: Showcasing the Main Trends in Russian Shipbuilding & Naval Systems |pages=61–63 |work=Maritime Security & Defence |url=https://euro-sd.com/wp-content/uploads/2021/09/MSD_4_2021_WEB.pdf}}

It was developed by Concern Morinformsystem-Agat, with at least one variant designed by NPP Salyut. Predel-E relies on a phenomenon known as atmospheric ducting, where certain meteorological conditions create a waveguide at a height of up to several dozen meters above the surface, which significantly increases the range of radar signals above 3 GHz, allowing Predel-E to detect targets at a distance of over 400 km, according to the manufacturer. Predel-E is designed to support the K-300P Bastion-P missile system and other systems.

In August 2023, Ukraine's military announced that it had destroyed a Russian coastal PREDEL-E station in the Kherson region, stating it to have been worth around $200 million.{{Cite web |last=Cook |first=Ellie |date=2023-08-29 |title='Exotic' Russian radar system worth $200M destroyed in HIMARS strike: Video |url=https://www.newsweek.com/ukraine-russia-predel-e-radar-kherson-counteroffensive-video-1822959 |access-date=2023-08-30 |website=Newsweek |language=en}}