Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4YRX callsign genealogy
Currently held by GREY, 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 KC4YRX's current licensee, walking backwards.
- GREY, THOMAS PGAgranted 2026-04-21cancelled 2026-05-15
Successor callsigns
Callsigns held now by people who previously held KC4YRX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4YRX, oldest first.
- GREY, THOMAS P GA2012-03-08 → cancelled 2024-03-09
- GREY, THOMAS P GA2026-05-15 active