Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KW4WO callsign genealogy
Currently held by Hartzheim, Anthony A
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 KW4WO's current licensee, walking backwards.
- Hartzheim, Anthony AFLgranted 2016-06-17cancelled 2016-07-14
Successor callsigns
Callsigns held now by people who previously held KW4WO.
No current licensee on record previously held this callsign.