Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB3DH callsign genealogy
Currently held by Frey, David E
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 AB3DH's current licensee, walking backwards.
- Frey, David EPAgranted 2001-10-18cancelled 2005-07-14
Successor callsigns
Callsigns held now by people who previously held AB3DH.
No current licensee on record previously held this callsign.