Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5CEO callsign genealogy
Currently held by Jenkins Jr, John I
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 K5CEO's current licensee, walking backwards.
- MERCKER, JOE FTXgranted 2017-07-12cancelled 2017-08-01
Successor callsigns
Callsigns held now by people who previously held K5CEO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5CEO, oldest first.
- Jenkins Jr, John I MS2005-04-12 → cancelled 2017-04-13
- MERCKER, JOE F TX2017-08-01 active