Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA4HC callsign genealogy
Currently held by CALDWELL, HARLAN B
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 AA4HC's current licensee, walking backwards.
- Mora-Blackwelder, ReinaFLgranted 2022-09-22cancelled 2022-11-26
Successor callsigns
Callsigns held now by people who previously held AA4HC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA4HC, oldest first.
- CALDWELL, HARLAN B VA2008-03-18 → cancelled 2020-03-19
- Mora-Blackwelder, Reina FL2022-11-26 active