Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA9WPO callsign genealogy
Currently held by KOSTKA, SHAUN P
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KA9WPO's current licensee, walking backwards.
- KOSTKA, SHAUN PILgranted 2009-08-27cancelled 2009-09-18
Successor callsigns
Callsigns held now by people who previously held KA9WPO.
No current licensee on record previously held this callsign.