Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4BTO callsign genealogy
Currently held by GIBBS, O K
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 K4BTO's current licensee, walking backwards.
- Reid, Jimmy ETNgranted 2014-04-15cancelled 2014-05-06
Successor callsigns
Callsigns held now by people who previously held K4BTO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4BTO, oldest first.
- GIBBS, O K AL1996-07-30 → cancelled 2005-03-20
- Reid, Jimmy E TN2024-06-11 active