Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI5OF callsign genealogy
Currently held by HUMPHRIES, SHAWN M
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 AI5OF's current licensee, walking backwards.
- HUMPHRIES, SHAWN MTXgranted 2023-07-18cancelled 2024-01-08
Successor callsigns
Callsigns held now by people who previously held AI5OF.
- HUMPHRIES, SHAWN MTXgranted 2024-01-27