Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB7UO callsign genealogy
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 AB7UO's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held AB7UO.
- HOFFMAN, MARK WCOgranted 1997-04-08cancelled 2003-05-20