Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4HAM callsign genealogy
Currently held by Mora, Howard
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 KB4HAM's current licensee, walking backwards.
- Mora, HowardFLgranted 2023-02-15cancelled 2023-03-07
Successor callsigns
Callsigns held now by people who previously held KB4HAM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4HAM, oldest first.
- JACKSON JR, OSCAR D GA2010-02-11 → cancelled 2021-07-24
- Mora, Howard FL2023-03-07 active