Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI0J callsign genealogy
Currently held by DROPPS, ERIC J
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 AI0J's current licensee, walking backwards.
- DROPPS, ERIC JCOgranted 2014-08-20cancelled 2015-11-14
Successor callsigns
Callsigns held now by people who previously held AI0J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AI0J, oldest first.
- ARNZEN, ROBERT J MO2003-07-30 → cancelled 2015-10-27
- DROPPS, ERIC J CO2025-09-10 active