Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9DM callsign genealogy
Currently held by Holtey, Warren J
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 AB9DM's current licensee, walking backwards.
- Holtey, Warren JWIgranted 2001-01-29cancelled 2001-11-15
Successor callsigns
Callsigns held now by people who previously held AB9DM.
No current licensee on record previously held this callsign.