Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AD0OH callsign genealogy
Currently held by Torrence, Billy R
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 AD0OH's current licensee, walking backwards.
- Torrence, Billy RMOgranted 2014-09-03cancelled 2015-04-01
Successor callsigns
Callsigns held now by people who previously held AD0OH.
- Torrence, Billy RMOgranted 2016-04-05