Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JIP callsign genealogy
Currently held by Black, Earl C
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 K4JIP's current licensee, walking backwards.
- Black, Earl CNCgranted 2022-05-21cancelled 2022-06-10
Successor callsigns
Callsigns held now by people who previously held K4JIP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JIP, oldest first.
- DAVIS, HAROLD C NC2006-04-21 → cancelled 2018-05-25
- Black, Earl C NC2022-06-10 active