Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO3R callsign genealogy
Currently held by McCullars Jr, Bobby S
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 KO3R's current licensee, walking backwards.
- McCullars Jr, Bobby SFLgranted 2020-08-10cancelled 2020-12-01
Successor callsigns
Callsigns held now by people who previously held KO3R.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KO3R, oldest first.
- CURRAN, ROBERT G PA2008-11-11 → cancelled 2020-11-13
- McCullars Jr, Bobby S FL2020-12-01 active