So I was talking EMCON the other day and I got to thinking about whether or not TF-38/58 routinely practiced EMCON during World War Two. I know both fleets regularly used radio silence to conceal their movements, but was EMCON used tactically to prevent Japanese forces from fixing the exact location the TGs? Or did the Japanese not have an ability to detect USN radar emissions and find/fix off of them? I've never seen a discussion on limited radiation of air or surface search radars by the USN which leads me to believe that the USN routinely operated with their radars radiating especially later in the war when the kamikzae threat was greatest. Along the same thought, I don't think I've ever heard of either the USN or IJN/IJA using chaff or other ECM during the conflict as was common during the air war in the ETO. Anyone have any insight into this corner of history?