Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1TPC callsign genealogy
Currently held by COSTAS, 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 K1TPC's current licensee, walking backwards.
- COSTAS, THOMAS PMAgranted 2007-10-12cancelled 2015-01-17
Successor callsigns
Callsigns held now by people who previously held K1TPC.
No current licensee on record previously held this callsign.