Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6JAK callsign genealogy
Currently held by KELTNER, JACK L
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 K6JAK's current licensee, walking backwards.
- KELTNER, JACK LCAgranted 2005-08-11cancelled 2007-05-15
Successor callsigns
Callsigns held now by people who previously held K6JAK.
- DAVIS, JOHN LCAgranted 2000-07-18cancelled 2004-04-20
All historical holders
Every license row we've seen with the callsign K6JAK, oldest first.
- DAVIS, JOHN L CA2000-06-06 → cancelled 2000-07-18
- KELTNER, JACK L CA2017-05-31 active