Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0SZ callsign genealogy
Currently held by Sechler, John B
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 AB0SZ's current licensee, walking backwards.
- Sechler, John BCOgranted 1998-02-27cancelled 2001-12-04
Successor callsigns
Callsigns held now by people who previously held AB0SZ.
No current licensee on record previously held this callsign.