Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC1WO callsign genealogy
Currently held by Altman, Micah
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 AC1WO's current licensee, walking backwards.
- Altman, MicahMAgranted 2026-07-25cancelled 2026-08-14
Successor callsigns
Callsigns held now by people who previously held AC1WO.
No current licensee on record previously held this callsign.