All this to say OTH is another Russian tub full of BS.
Ask the Australians. They seem satisfied enough with Jindalee to spend a lot on an upgrade.
https://www.australiandefence.com.au...thr-capability
Can’t speak for the Russians, but they’ve been investing and building OHTRs for a long time…..
https://en.wikipedia.org/wiki/Duga_radar