Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI5MM callsign genealogy
Currently held by Martens, Jon 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 AI5MM's current licensee, walking backwards.
- Martens, Jon BARgranted 2023-01-04cancelled 2023-08-10
Successor callsigns
Callsigns held now by people who previously held AI5MM.
No current licensee on record previously held this callsign.