Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4KLR callsign genealogy
Currently held by PARKER, WILLIAM E
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 K4KLR's current licensee, walking backwards.
- Wu, Wenchang ENJgranted 2016-03-03cancelled 2024-09-28
Successor callsigns
Callsigns held now by people who previously held K4KLR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4KLR, oldest first.
- PARKER, WILLIAM E FL1997-09-17 → cancelled 2009-09-18
- Kerr, Earnest M GA2012-09-08 → cancelled 2024-09-10
- Wu, Wenchang E NJ2024-09-28 active