Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4YQ callsign genealogy
Currently held by Schlager, Charles K
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 AI4YQ's current licensee, walking backwards.
- Schlager, Charles KNCgranted 2003-01-25cancelled 2007-05-25
Successor callsigns
Callsigns held now by people who previously held AI4YQ.
No current licensee on record previously held this callsign.