Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9DH callsign genealogy
Currently held by HOLTZMAN, DOUG 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 AB9DH's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AB9DH.
- Holtzman, Doug MWIgranted 2000-09-12cancelled 2002-06-25