Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4KGP callsign genealogy
Currently held by OSBURN, HAROLD A
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 K4KGP's current licensee, walking backwards.
- KREUTZER mr, GREGORY PNCgranted 2020-07-27cancelled 2020-08-25
Successor callsigns
Callsigns held now by people who previously held K4KGP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4KGP, oldest first.
- OSBURN, HAROLD A TN1993-12-14 → cancelled 2005-12-15
- Kreutzer, Gregory P NC2020-08-25 active