Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0SM callsign genealogy
Currently held by Belsha, Robert J
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 AB0SM's current licensee, walking backwards.
- Belsha, Robert JMOgranted 1998-09-16cancelled 2001-10-29
Successor callsigns
Callsigns held now by people who previously held AB0SM.
No current licensee on record previously held this callsign.