Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4SMA callsign genealogy
Currently held by KEARNS, THOMAS F
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 KF4SMA's current licensee, walking backwards.
- Kearns, Thomas FNJgranted 2013-06-17cancelled 2013-07-06
Successor callsigns
Callsigns held now by people who previously held KF4SMA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4SMA, oldest first.
- KEARNS, THOMAS F GA1997-06-16 → cancelled 2009-06-17
- Kearns, Thomas F SC2013-07-06 → cancelled 2025-07-08