Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB3MH callsign genealogy
Currently held by SULLIVAN II, STEPHEN 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 AB3MH's current licensee, walking backwards.
- SULLIVAN II, STEPHEN DMDgranted 2008-10-06cancelled 2010-12-06
Successor callsigns
Callsigns held now by people who previously held AB3MH.
No current licensee on record previously held this callsign.