Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W8TKM callsign genealogy
Currently held by MATHER, THADDEUS K
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 W8TKM's current licensee, walking backwards.
- MATHER, THADDEUS KOHgranted 2004-02-04cancelled 2008-04-29
Successor callsigns
Callsigns held now by people who previously held W8TKM.
No current licensee on record previously held this callsign.