Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WK9H callsign genealogy
Currently held by CALL, LARRY 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 WK9H's current licensee, walking backwards.
- Hahn, Kenneth EWIgranted 2005-10-31cancelled 2006-01-10
Successor callsigns
Callsigns held now by people who previously held WK9H.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WK9H, oldest first.
- CALL, LARRY J IL1989-09-05 → cancelled 2001-09-06
- Hahn, Kenneth E WI2026-01-14 active