Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4CD callsign genealogy
Currently held by Blair, Allen K
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 AB4CD's current licensee, walking backwards.
- Blair, Allen KALgranted 2014-01-23cancelled 2019-06-25
Successor callsigns
Callsigns held now by people who previously held AB4CD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB4CD, oldest first.
- PLAGER, STANLEY J GA2007-01-24 → cancelled 2019-04-16
- Blair, Allen K AL2019-06-25 active