The An-26RTR 'Curl-B' was an elint, sigint, electronic warfare aircraft and this example, 1510 coded '06' yellow, belonged to 226 OSAP at Sperenberg. It was the only RTR based in Germany. '06' was pictured in May 1994, when the base opened its doors to the public, shortly before this last Russian airbase in the former GDR was closed.