Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB1MS callsign genealogy
Currently held by Martyszczyk, William 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 AB1MS's current licensee, walking backwards.
- Martyszczyk, William JCTgranted 2006-12-12cancelled 2010-05-24
Successor callsigns
Callsigns held now by people who previously held AB1MS.
No current licensee on record previously held this callsign.