Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS5JJ callsign genealogy
Currently held by JOHNSTON, JEFFERY G
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 KS5JJ's current licensee, walking backwards.
- Johnston, Jeffery GTXgranted 1998-05-06cancelled 2003-12-30
Successor callsigns
Callsigns held now by people who previously held KS5JJ.
- Johnston, Jeffery GTXgranted 1998-05-06cancelled 2003-12-30
All historical holders
Every license row we've seen with the callsign KS5JJ, oldest first.
- JOHNSTON, JEFFERY G TX1998-05-06 → cancelled 2000-06-01
- Johnston, Jeffery G TX2014-01-28 → cancelled 2026-03-07