Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1MAS callsign genealogy
Currently held by SIGUENZA, MICHAEL A
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 W1MAS's current licensee, walking backwards.
- SIGUENZA, MICHAEL AMAgranted 1994-08-23cancelled 2001-08-21
Successor callsigns
Callsigns held now by people who previously held W1MAS.
No current licensee on record previously held this callsign.