Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9GDH callsign genealogy
Currently held by Hammerel, Gregory 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 W9GDH's current licensee, walking backwards.
- HAMMEREL, GREGORY DWIgranted 1994-11-17cancelled 2001-03-10
Successor callsigns
Callsigns held now by people who previously held W9GDH.
No current licensee on record previously held this callsign.