Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB2UM callsign genealogy
Currently held by CHAPMAN, JOAN A
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 AB2UM's current licensee, walking backwards.
- CHAPMAN, JOAN ANYgranted 2005-10-12cancelled 2005-10-13
Successor callsigns
Callsigns held now by people who previously held AB2UM.
No current licensee on record previously held this callsign.