Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3GDM callsign genealogy
Currently held by MENTRO SR, GARY D
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 W3GDM's current licensee, walking backwards.
- MENTRO SR, GARY DVAgranted 1999-04-06cancelled 2000-02-11
Successor callsigns
Callsigns held now by people who previously held W3GDM.
- MENTRO SR, GARY DPAgranted 2018-01-03