Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI5MB callsign genealogy
Currently held by OBENSHAIN, HARLIN 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 AI5MB's current licensee, walking backwards.
- OBENSHAIN, HARLIN DTXgranted 2016-06-15cancelled 2023-06-28
Successor callsigns
Callsigns held now by people who previously held AI5MB.
No current licensee on record previously held this callsign.