Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4BOB callsign genealogy
Currently held by WOODRING, ROBERT G
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 KJ4BOB's current licensee, walking backwards.
- Mason, Robert WNCgranted 2022-06-18cancelled 2024-05-03
Successor callsigns
Callsigns held now by people who previously held KJ4BOB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ4BOB, oldest first.
- WOODRING, ROBERT G FL2009-12-01 → cancelled 2021-11-11
- Mason, Robert W NC2024-05-03 active