Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ4CS callsign genealogy
Currently held by Eastman III, Philip H
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 KJ4CS's current licensee, walking backwards.
- Eastman III, Philip HGAgranted 2022-04-11cancelled 2022-12-28
Successor callsigns
Callsigns held now by people who previously held KJ4CS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ4CS, oldest first.
- EASTMAN JR, PHILIP H GA2012-10-25 → cancelled 2021-01-17
- Eastman III, Philip H GA2022-12-28 active