Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ0COL callsign genealogy
Currently held by Benson, Jack B
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 KJ0COL's current licensee, walking backwards.
- Benson, Jack BCOgranted 2022-04-12cancelled 2022-05-20
Successor callsigns
Callsigns held now by people who previously held KJ0COL.
No current licensee on record previously held this callsign.