Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB1AJ callsign genealogy
Currently held by O Donnell, Richard 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 AB1AJ's current licensee, walking backwards.
- O Donnell, Richard EMAgranted 2001-07-23cancelled 2002-04-24
Successor callsigns
Callsigns held now by people who previously held AB1AJ.
No current licensee on record previously held this callsign.