Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4FT callsign genealogy
Currently held by Thompson, Fred
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 KK4FT's current licensee, walking backwards.
- Thompson, FredSCgranted 2013-12-11cancelled 2015-01-06
Successor callsigns
Callsigns held now by people who previously held KK4FT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK4FT, oldest first.
- FULLER, WALTER D MI1994-12-29 → cancelled 2004-07-22
- Thompson, Fred SC2015-01-06 active