Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA4OK callsign genealogy
Currently held by Shirk, David G
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 AA4OK's current licensee, walking backwards.
- Shirk, David GNCgranted 2003-05-20cancelled 2008-11-01
- KB9JNno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AA4OK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA4OK, oldest first.
- STRIETELMEIER, LYMAN D GA1994-09-27 → cancelled 2006-09-28
- Shirk, David G NC2008-11-01 → cancelled 2020-11-03