When Japan could detect enemy radar

Did Japan have the ability to detect enemy radar at that stage of the war?

No operational capability is identified for the Indian Ocean raid; Japanese radar development was still under way.

Japanese forces lacked the proposed radar-detection capability at the time of the Indian Ocean raid, although development was under way. A receiver can listen for an enemy set when its operating frequency is known. Finding a transmission still leaves the separate problem of locating its source. British night operations therefore benefited from an asymmetry in radar use and warning.