Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5JAK callsign genealogy
Currently held by KEELIN, JOSEPH 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 K5JAK's current licensee, walking backwards.
- Knight, Jacob ATXgranted 2023-08-01cancelled 2023-08-19
Successor callsigns
Callsigns held now by people who previously held K5JAK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5JAK, oldest first.
- KEELIN, JOSEPH A NM2010-05-12 → cancelled 2022-08-09
- Knight, Jacob TX2023-08-19 active