Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4TCS callsign genealogy
Currently held by CHARMATZ, CHARLES B
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 KC4TCS's current licensee, walking backwards.
- CHARMATZ, CHARLES BFLgranted 2015-10-13cancelled 2015-11-03
Successor callsigns
Callsigns held now by people who previously held KC4TCS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4TCS, oldest first.
- CHARMATZ, CHARLES B FL2001-03-27 → cancelled 2012-09-19
- CHARMATZ, CHARLES B FL2025-12-17 active