Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KW4WTF callsign genealogy
Currently held by SPEARS, MICHAEL D
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 KW4WTF's current licensee, walking backwards.
- SPEARS, MICHAEL DFLgranted 2016-09-06cancelled 2016-11-08
Successor callsigns
Callsigns held now by people who previously held KW4WTF.
No current licensee on record previously held this callsign.