Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB5OEM callsign genealogy
Currently held by DETJEN, JON C
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 KB5OEM's current licensee, walking backwards.
- KI5SOCcancelledBell County Office Of Emergency ManagementTXgranted 2021-11-17cancelled 2021-12-24
Successor callsigns
Callsigns held now by people who previously held KB5OEM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB5OEM, oldest first.
- DETJEN, JON C TX2001-05-10 → cancelled 2013-05-11
- Bell County Office Of Emergency Management TX2021-12-24 active