Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB3KJ callsign genealogy
Currently held by BROWN JR, FREDERICK W
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 AB3KJ's current licensee, walking backwards.
- BROWN JR, FREDERICK WPAgranted 2009-12-14cancelled 2010-01-04
Successor callsigns
Callsigns held now by people who previously held AB3KJ.
- BROWN JR, FREDERICK WPAgranted 2010-02-12cancelled 2022-02-15