Pak surya, utawi kak surya, kenten pesengan alit dane ring jagat kapramukaan, neren ngelarin pameran filateli ring wewidangan lokal, regional, nasional nyantos internasional.
Pak surya, or kak surya, as he is familiarly known in the world of scouting, regularly organizes philatelic exhibitions on a local, regional, national and international scale.