Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC5ABO callsign genealogy
Currently held by Sabo, Casey M
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 KC5ABO's current licensee, walking backwards.
- Sabo, Casey MTXgranted 2024-06-19cancelled 2026-08-11
Successor callsigns
Callsigns held now by people who previously held KC5ABO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC5ABO, oldest first.
- HASTINGS, GRADY W TX2003-02-28 → cancelled 2015-04-28
- Sabo, Casey M TX2026-08-11 active