Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9WLH callsign genealogy
Currently held by Heitl, William L
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 N9WLH's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N9WLH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9WLH, oldest first.
- ORTMAN, KENNETH IL2004-04-02 → cancelled 2016-04-05
- Heitl, William L WI2016-11-15 active