Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JTF callsign genealogy
Currently held by Francis, John T
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 K4JTF's current licensee, walking backwards.
- Francis, John TTNgranted 2018-02-28cancelled 2018-03-20
Successor callsigns
Callsigns held now by people who previously held K4JTF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JTF, oldest first.
- LATSHAW, WILLIS W FL1995-09-05 → cancelled 2005-10-27
- Francis, John T TN2018-03-20 active