Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4HJ callsign genealogy
Currently held by JOSEPH, HARLAN 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 K4HJ's current licensee, walking backwards.
- NEWMAN JR, CHARLES SVAgranted 2017-03-07cancelled 2022-10-12
- KF4MDKno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held K4HJ.
- WORTHINGTON III, WILLIAM JOHgranted 2017-01-30
All historical holders
Every license row we've seen with the callsign K4HJ, oldest first.
- JOSEPH, HARLAN E KY2019-02-19 → cancelled 2020-10-22
- NEWMAN JR, CHARLES S VA2022-10-12 active