Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7MAM callsign genealogy
Currently held by MATIENZO, MARIA DOLORES 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 W7MAM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W7MAM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7MAM, oldest first.
- NIKOLAUS, GORDON G OR2007-12-14 → cancelled 2019-12-17
- MATIENZO, MARIA DOLORES A WA2025-07-25 active