Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4YOL callsign genealogy
Currently held by BELL, JNO P
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 K4YOL's current licensee, walking backwards.
- Oswalt, JeffreyALgranted 2022-11-08cancelled 2023-04-22
Successor callsigns
Callsigns held now by people who previously held K4YOL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4YOL, oldest first.
- BELL, JNO P TN1994-02-22 → cancelled 2006-02-23
- Oswalt, Jeffrey AL2023-04-22 active