Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD5GMM callsign genealogy
Currently held by GILBREATH, JOHN M
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 WD5GMM's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held WD5GMM.
- GILBREATH, JOHN MINgranted 2026-02-03