Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5JKK callsign genealogy
Currently held by KIRBY JR, JOHN K
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 W5JKK's current licensee, walking backwards.
- KIRBY JR, JOHN KTXgranted 2016-03-04cancelled 2016-07-08
Successor callsigns
Callsigns held now by people who previously held W5JKK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5JKK, oldest first.
- Clark, George J OK2004-03-29 → cancelled 2016-05-25
- KIRBY JR, JOHN K TX2016-07-08 active