Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4IHJ callsign genealogy
Currently held by Petersen, Jack R
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 K4IHJ's current licensee, walking backwards.
- Petersen, Jack RGAgranted 2020-10-13cancelled 2021-01-23
Successor callsigns
Callsigns held now by people who previously held K4IHJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4IHJ, oldest first.
- BIRNEY SR, PAUL G GA1989-10-03 → cancelled 2001-10-04
- Petersen, Jack R GA2021-01-23 active