Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB1KU callsign genealogy
Currently held by Schadlick, William J
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 AB1KU's current licensee, walking backwards.
- Schadlick, William JMAgranted 2009-04-01cancelled 2009-05-28
Successor callsigns
Callsigns held now by people who previously held AB1KU.
No current licensee on record previously held this callsign.