Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5ZGY callsign genealogy
Currently held by Ziegenhorn Jr, Clyde E
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 K5ZGY's current licensee, walking backwards.
- Ziegenhorn Jr, Clyde ETXgranted 2020-09-17cancelled 2020-10-06
Successor callsigns
Callsigns held now by people who previously held K5ZGY.
- HAMILL, FARRELL DNMgranted 2009-09-09cancelled 2014-02-15
All historical holders
Every license row we've seen with the callsign K5ZGY, oldest first.
- HAMILL, FARRELL D NM2009-06-09 → cancelled 2009-09-09
- Ziegenhorn Jr, Clyde E TX2020-10-06 active