Confidence: Medium · Source: FCC ULS · As of 2026-09-10
KA4DOC callsign genealogy
Currently held by Heabler, George D
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 KA4DOC's current licensee, walking backwards.
- Heabler, George DGAgranted 2016-10-13cancelled 2016-11-04
Successor callsigns
Callsigns held now by people who previously held KA4DOC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA4DOC, oldest first.
- HEDGESPETH, JOHNSEY B KY1996-05-07 → cancelled 2008-05-08
- Heabler, George D GA2016-11-04 active