Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4ALA callsign genealogy
Currently held by Bosch, L Alan
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 KO4ALA's current licensee, walking backwards.
- PERCER, STEVEN GALgranted 2020-05-04cancelled 2020-07-18
Successor callsigns
Callsigns held now by people who previously held KO4ALA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KO4ALA, oldest first.
- Bosch, L Alan VA1998-10-27 → cancelled 2010-10-28
- Percer, Steven G AL2020-07-18 active