Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4MJB callsign genealogy
Currently held by Gallion II, Donald 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 K4MJB's current licensee, walking backwards.
- Gallion Ii, Donald ETXgranted 2011-01-07cancelled 2011-04-26
Successor callsigns
Callsigns held now by people who previously held K4MJB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4MJB, oldest first.
- BIBLE, MARY J FL1998-11-24 → cancelled 2010-11-25
- Gallion II, Donald E TX2021-03-11 active