Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5MZ callsign genealogy
Currently held by GRANT, DAVID
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 W5MZ's current licensee, walking backwards.
- GRANT, DAVIDARgranted 2004-05-20cancelled 2012-09-14
Successor callsigns
Callsigns held now by people who previously held W5MZ.
- JEFFCOAT, THOMAS WLAgranted 1998-11-05cancelled 2000-11-21
All historical holders
Every license row we've seen with the callsign W5MZ, oldest first.
- JEFFCOAT, THOMAS W LA2000-11-21 → cancelled 2010-08-24
- GRANT, DAVID AR2022-07-08 active
- JEFFCOAT, THOMAS W— → cancelled 1998-11-05