ERB-47H was the designation assigned to three RB-47Hs (53-6245, 53-6246 and 53-6249) that were modified as special reconnaissance aircraft designed to detect and locate electromagnetic radio frequency emissions.
Like the RB-47H, the ERB-47H was equipped with a bomb bay pod that carried extra equipment and additional crew members, known as Electronic Warfare Officers (EWOs, aka Crows or Ravens). However, the normal crew complement of the ERB-47H was only five as opposed to six for the RB-47H, since the normal Raven One position in the RB-47H was eliminated and filled with additional equipment.
Like the RB-47H, the ERB-47H was sometimes sent on some rather dangerous missions near Communist airspace. An ERB-47H was intercepted and fired upon by a pair of North Korean MiG-17s over the Sea of Japan on April 27, 1965. Although heavily damaged, the plane managed to escape and make a safe landing at Yokota AB in Japan.