Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ4RD callsign genealogy
Currently held by Cowan, William T
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 AJ4RD's current licensee, walking backwards.
- Cowan, William TVAgranted 2009-04-21cancelled 2009-06-26
Successor callsigns
Callsigns held now by people who previously held AJ4RD.
No current licensee on record previously held this callsign.