Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4ZK callsign genealogy
Currently held by Kohlhof, Gregory 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 AI4ZK's current licensee, walking backwards.
- Kohlhof, Gregory KFLgranted 2007-04-18cancelled 2007-06-20
Successor callsigns
Callsigns held now by people who previously held AI4ZK.
No current licensee on record previously held this callsign.