Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9TPW callsign genealogy
Currently held by Williams, Thomas P
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 KC9TPW's current licensee, walking backwards.
- Williams, Thomas PWIgranted 2003-09-26cancelled 2003-10-24
Successor callsigns
Callsigns held now by people who previously held KC9TPW.
No current licensee on record previously held this callsign.