Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0OS callsign genealogy
Currently held by Lapuzza, John P
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 AB0OS's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AB0OS.
- Lapuzza, John PNEgranted 2000-09-26cancelled 2001-08-24